General Science

1. During normal respiration in a mammal, the diaphragm is BPSC TRE 4 General Science practice set 3 2. The most important cell type associated with the immunity of the body is BPSC TRE 4 General Science practice set 3 3. What does EOS-05 stand for? BPSC TRE 4 current affairs practice set 1 4. A piece of wire of resistance R is cut into 5 equal parts. These parts are then connected in parallel. If the equivalent resistance of the combination is R, then the ratio R/R is BPSC TRE 4 General Science practice set 1 5. An electric heater of resistance 8 ohm draws 15 A current from the mains. What is the rate at which heat is developed in the heater? BPSC TRE 4 General Science practice set 1 6. Which of the following lenses would you prefer to use while reading small letters found in a dictionary? BPSC TRE 4 General Science practice set 1 7. The human eye forms the image of an object at its ________ BPSC TRE 4 General Science practice set 1 8. Which of the following is not a part of the female reproductive system in human beings? BPSC TRE 4 General Science practice set 1 9. The anther contains _________ BPSC TRE 4 General Science practice set 1 10. Asexual reproduction takes place through budding in ______ BPSC TRE 4 General Science practice set 1 11. Which one of the following types of medicines is used for treating indigestion? BPSC TRE 4 General Science practice set 1 12. Ginger is an underground stem and not a root because BPSC TRE 4 General Science practice set 2 13. The focal length of a convex lens is fL = 10 cm. On immersing in water, it will act as a BPSC TRE 4 General Science practice set 2 14. Though water is transparent to visible light, it is not possible to see distant objects in fog which consists of fine drops of water. This is so because BPSC TRE 4 General Science practice set 2 15. Monochromatic light enters from one medium to the other. Which one of the following properties does not change? BPSC TRE 4 General Science practice set 2 16. The speed of an electron in the orbit of the hydrogen atom in the ground state is BPSC TRE 4 General Science practice set 2 17. Which of the following is an example of a chemical reaction? BPSC TRE 4 General Science practice set 4 18. A blackbody radiates energy at the rate of E watt per metre 2 at a high temperature T K. When the temperature is reduced to T/3 K, the radiant energy will be BPSC TRE 4 General Science practice set 2 19. The acid which can destroy the colour of acidic KMnO4 is BPSC TRE 4 General Science practice set 2 20. An isotropic source of 2 candela produces light flux equal to BPSC TRE 4 General Science practice set 3 21. The spray bottles used as window or household cleaner or perfume sprayer work on BPSC TRE 4 General Science practice set 3 22. The trade name of basic lead carbonate is BPSC TRE 4 General Science practice set 3 23. The trade name of basic lead carbonate is BPSC TRE 4 General Science practice set 3 24. Which of the following elements has the largest atomic radius? BPSC TRE 4 General Science practice set 3 25. The phenomenon of photoperiodism in plants was discovered by BPSC TRE 4 General Science practice set 3 26. During normal inspiration, the diaphragm BPSC TRE 4 General Science practice set 3 27. Which type of lymphocyte produces antibodies? BPSC TRE 4 General Science practice set 3 28. Which organisation developed and launched EOS-05? BPSC TRE 4 current affairs practice set 1 29. A wire of resistance 20 ohm is cut into 4 equal parts. The resistance of each part is BPSC TRE 4 General Science practice set 1 30. A current of 5 A flows through a resistor of resistance 4 ohm. The power dissipated in the resistor is BPSC TRE 4 General Science practice set 1 31. Which type of lens is commonly used as a magnifying glass? BPSC TRE 4 General Science practice set 1 32. Which part of the human eye controls the amount of light entering the eye? BPSC TRE 4 General Science practice set 1 33. Which organ produces ova in the female reproductive system? BPSC TRE 4 General Science practice set 1 34. Which of the following is the male reproductive part of a flower? BPSC TRE 4 General Science practice set 1 35. Which type of asexual reproduction occurs in Amoeba? BPSC TRE 4 General Science practice set 1 36. Which type of medicine is commonly used to treat bacterial infections? BPSC TRE 4 General Science practice set 1 37. Which type of modified stem is found in ginger? BPSC TRE 4 General Science practice set 2 38. When a convex lens is immersed in a liquid having the same refractive index as the lens material, it will BPSC TRE 4 General Science practice set 2 39. The blue colour of the sky is mainly due to BPSC TRE 4 General Science practice set 2 40. When light passes from air into glass, which quantity remains unchanged? BPSC TRE 4 General Science practice set 2 41. According to the Bohr model, the speed of an electron in the nth orbit of a hydrogen atom is proportional to BPSC TRE 4 General Science practice set 2 42. Which of the following is a chemical change? BPSC TRE 4 General Science practice set 4 43. According to Stefan-Boltzmann law, the radiant energy emitted per unit area per unit time by a blackbody is proportional to BPSC TRE 4 General Science practice set 2 44. Which acid is commonly used as a reducing agent in the reaction with acidified KMnO4? BPSC TRE 4 General Science practice set 2 45. An isotropic source has luminous intensity of 5 candela. Its total luminous flux is BPSC TRE 4 General Science practice set 3 46. According to Bernoulli's principle, when the speed of a flowing fluid increases, its pressure generally BPSC TRE 4 General Science practice set 3 47. The chemical formula of white lead is BPSC TRE 4 General Science practice set 3 48. The chemical formula of white lead is BPSC TRE 4 General Science practice set 3 49. Which of the following elements has the smallest atomic radius among Li, Be and B? BPSC TRE 4 General Science practice set 3 50. Garner and Allard studied photoperiodism particularly through experiments on which tobacco variety? BPSC TRE 4 General Science practice set 3 51. During normal expiration, the diaphragm generally BPSC TRE 4 General Science practice set 3 52. Which cells are primarily responsible for cell-mediated immunity? BPSC TRE 4 General Science practice set 3 53. Which launch vehicle was used to launch EOS-05? BPSC TRE 4 current affairs practice set 1 54. Four identical resistors, each of resistance R, are connected in parallel. Their equivalent resistance is BPSC TRE 4 General Science practice set 1 55. A resistor of resistance 10 ohm is connected across a 20 V supply. The power consumed by the resistor is BPSC TRE 4 General Science practice set 1 56. A convex lens has a focal length of 20 cm. Its power is BPSC TRE 4 General Science practice set 1 57. Which part of the human eye acts as a screen on which the image is formed? BPSC TRE 4 General Science practice set 1 58. Which organ is the usual site of implantation of the embryo in human females? BPSC TRE 4 General Science practice set 1 59. Which of the following is the female reproductive part of a flower? BPSC TRE 4 General Science practice set 1 60. Which type of asexual reproduction occurs in Plasmodium? BPSC TRE 4 General Science practice set 1 61. Which type of medicine is used to relieve pain? BPSC TRE 4 General Science practice set 1 62. Which of the following is an example of a stem tuber? BPSC TRE 4 General Science practice set 2 63. The power of a convex lens of focal length 50 cm is BPSC TRE 4 General Science practice set 2 64. The reddish appearance of the Sun near the horizon is mainly due to BPSC TRE 4 General Science practice set 2 65. When light enters a denser medium from a rarer medium, its speed generally BPSC TRE 4 General Science practice set 2 66. If the speed of an electron in the first orbit of hydrogen is c/137, its speed in the second orbit is BPSC TRE 4 General Science practice set 2 67. Which gas is released when an acid reacts with a metal carbonate? BPSC TRE 4 General Science practice set 4 68. If the absolute temperature of a blackbody is doubled, its radiant energy emitted per unit area becomes BPSC TRE 4 General Science practice set 2 69. The purple colour of acidified KMnO4 disappears during its reaction with oxalic acid because BPSC TRE 4 General Science practice set 2 70. One candela is equivalent to luminous flux of how much per steradian? BPSC TRE 4 General Science practice set 3 71. The working of an atomizer or perfume sprayer is primarily based on BPSC TRE 4 General Science practice set 3 72. The trade name of lead tetroxide (Pb3O4) is BPSC TRE 4 General Science practice set 3 73. The trade name of lead tetroxide (Pb3O4) is BPSC TRE 4 General Science practice set 3 74. The atomic radius generally decreases from left to right across a period because BPSC TRE 4 General Science practice set 3 75. Photoperiodism refers to the response of plants mainly to BPSC TRE 4 General Science practice set 3 76. The main muscle responsible for quiet inspiration is the BPSC TRE 4 General Science practice set 3 77. Which blood cells are primarily responsible for carrying oxygen? BPSC TRE 4 General Science practice set 3 78. On which date was EOS-05 launched? BPSC TRE 4 current affairs practice set 1 79. Three identical resistors, each of resistance 6 ohm, are connected in parallel. The equivalent resistance is BPSC TRE 4 General Science practice set 1 80. A current of 2 A flows through a 5 ohm resistor for 10 seconds. The heat produced is BPSC TRE 4 General Science practice set 1 81. A concave lens has a focal length of 50 cm. Its power is BPSC TRE 4 General Science practice set 1 82. Which part of the eye changes its curvature to help focus objects at different distances? BPSC TRE 4 General Science practice set 1 83. Which structure carries the ovum from the ovary toward the uterus? BPSC TRE 4 General Science practice set 1 84. The ovules in a flower are present inside the BPSC TRE 4 General Science practice set 1 85. In budding, a new organism develops as an outgrowth from the BPSC TRE 4 General Science practice set 1 86. Which substance is commonly used as an antacid? BPSC TRE 4 General Science practice set 1 87. The eyes of a potato represent BPSC TRE 4 General Science practice set 2 88. A lens has a focal length of 25 cm. Its power is BPSC TRE 4 General Science practice set 2 89. Why are danger signals generally red in colour? BPSC TRE 4 General Science practice set 2 90. When light enters glass from air, its wavelength generally BPSC TRE 4 General Science practice set 2 91. The approximate value of the fine-structure constant is BPSC TRE 4 General Science practice set 2 92. Which type of reaction occurs when two or more substances combine to form a single product? BPSC TRE 4 General Science practice set 4 93. If the absolute temperature of a blackbody is tripled, its radiant energy emitted per unit area becomes BPSC TRE 4 General Science practice set 2 94. In acidic medium, the reduction product of permanganate ion MnO4− is BPSC TRE 4 General Science practice set 2 95. The total solid angle around a point is BPSC TRE 4 General Science practice set 3 96. In a horizontal pipe, water flows through a narrow section. Compared with the wider section, the speed of water in the narrow section is BPSC TRE 4 General Science practice set 3 97. The compound PbO is commonly known by the trade name BPSC TRE 4 General Science practice set 3 98. The compound PbO is commonly known by the trade name BPSC TRE 4 General Science practice set 3 99. The atomic radius generally increases down a group because BPSC TRE 4 General Science practice set 3 100. A plant that flowers when the day length is shorter than a critical value is generally called a BPSC TRE 4 General Science practice set 3 101. Contraction of the diaphragm during inspiration causes the volume of the thoracic cavity to BPSC TRE 4 General Science practice set 3 102. Which blood component is mainly involved in blood clotting? BPSC TRE 4 General Science practice set 3 103. From where was EOS-05 launched? BPSC TRE 4 current affairs practice set 1 104. Two resistors of 6 ohm and 3 ohm are connected in parallel. Their equivalent resistance is BPSC TRE 4 General Science practice set 1 105. An electric bulb is rated 100 W, 200 V. The current drawn by the bulb at its rated voltage is BPSC TRE 4 General Science practice set 1 106. When an object is placed between the optical centre and focus of a convex lens, the image formed is BPSC TRE 4 General Science practice set 1 107. The ability of the eye lens to change its focal length according to the distance of the object is called BPSC TRE 4 General Science practice set 1 108. In human beings, fertilization normally takes place in the BPSC TRE 4 General Science practice set 1 109. Which part of the flower receives pollen grains during pollination? BPSC TRE 4 General Science practice set 1 110. Which organism commonly reproduces by budding? BPSC TRE 4 General Science practice set 1 111. Which acid is mainly present in the gastric juice of the human stomach? BPSC TRE 4 General Science practice set 1 112. Which of the following is a modified underground stem? BPSC TRE 4 General Science practice set 2 113. Which type of lens is used to correct myopia? BPSC TRE 4 General Science practice set 2 114. The phenomenon responsible for the blue colour of the sky is BPSC TRE 4 General Science practice set 2 115. The frequency of light is determined by the BPSC TRE 4 General Science practice set 2 116. The speed of light in vacuum is approximately how many times the speed of an electron in the first Bohr orbit of hydrogen? BPSC TRE 4 General Science practice set 2 117. What is the audible frequency range of the human ear? BPSC TRE 4 General Science practice set 4 118. If the temperature of a blackbody is reduced to half its original absolute temperature, its radiant energy becomes BPSC TRE 4 General Science practice set 2 119. The oxidation state of manganese in KMnO4 is BPSC TRE 4 General Science practice set 2 120. A point source of luminous intensity 10 candela illuminates a surface normally at a distance of 2 m. The illuminance is BPSC TRE 4 General Science practice set 3 121. The equation P + 1/2ρv² + ρgh = constant represents BPSC TRE 4 General Science practice set 3 122. The mineral name of lead(II) sulfide, PbS, is BPSC TRE 4 General Science practice set 3 123. The mineral name of lead(II) sulfide, PbS, is BPSC TRE 4 General Science practice set 3 124. Which of the following has the largest atomic radius? BPSC TRE 4 General Science practice set 3 125. Which of the following is a commonly cited short-day plant? BPSC TRE 4 General Science practice set 3 126. According to Boyle's law, if the volume of a gas-filled cavity increases at constant temperature, its pressure BPSC TRE 4 General Science practice set 3 127. Which immunoglobulin is generally the most abundant antibody in human blood serum? BPSC TRE 4 General Science practice set 3 128. Into which orbit was EOS-05 initially placed by GSLV-F17? BPSC TRE 4 current affairs practice set 1 129. Two resistors of 4 ohm and 6 ohm are connected in series. Their equivalent resistance is BPSC TRE 4 General Science practice set 1 130. An electrical appliance operates at 220 V and draws a current of 5 A. Its power consumption is BPSC TRE 4 General Science practice set 1 131. Which type of image is always formed by a concave lens for a real object? BPSC TRE 4 General Science practice set 1 132. Which type of lens is used to correct myopia? BPSC TRE 4 General Science practice set 1 133. Which of the following is a male reproductive organ? BPSC TRE 4 General Science practice set 1 134. Which structure connects the stigma with the ovary in a flower? BPSC TRE 4 General Science practice set 1 135. Which of the following is an example of asexual reproduction by fragmentation? BPSC TRE 4 General Science practice set 1 136. Which organ produces hydrochloric acid as part of gastric juice? BPSC TRE 4 General Science practice set 1 137. Which plant has a bulb as a modified underground stem? BPSC TRE 4 General Science practice set 2 138. Which type of lens is used to correct hypermetropia? BPSC TRE 4 General Science practice set 2 139. Which phenomenon makes the path of a light beam visible when it passes through smoke? BPSC TRE 4 General Science practice set 2 140. A light wave has a frequency of 6 × 10^14 Hz in air. Its frequency in glass will be BPSC TRE 4 General Science practice set 2 141. In the Bohr model of hydrogen, the angular momentum of the electron in the nth orbit is BPSC TRE 4 General Science practice set 2 142. Sound having a frequency greater than 20,000 Hz is called BPSC TRE 4 General Science practice set 4 143. A blackbody emits radiant energy at the rate E per unit area at temperature T. At temperature 2T, the rate will be BPSC TRE 4 General Science practice set 2 144. In the reaction between acidified KMnO4 and oxalic acid, oxalic acid is BPSC TRE 4 General Science practice set 2 145. If the distance from an isotropic point source is doubled, the illuminance becomes BPSC TRE 4 General Science practice set 3 146. The lifting of an airplane wing is commonly explained using BPSC TRE 4 General Science practice set 3 147. The mineral name of lead(II) carbonate, PbCO3, is BPSC TRE 4 General Science practice set 3 148. The mineral name of lead(II) carbonate, PbCO3, is BPSC TRE 4 General Science practice set 3 149. Which of the following has the smallest atomic radius? BPSC TRE 4 General Science practice set 3 150. Which of the following is a commonly cited long-day plant? BPSC TRE 4 General Science practice set 3 151. Air enters the lungs during inspiration mainly because the pressure inside the lungs becomes BPSC TRE 4 General Science practice set 3 152. Which immunoglobulin is mainly associated with allergic reactions? BPSC TRE 4 General Science practice set 3 153. What is the major distinction of EOS-05? BPSC TRE 4 current affairs practice set 1 154. A wire has resistance R. If its length is doubled while its cross-sectional area remains unchanged, its new resistance will be BPSC TRE 4 General Science practice set 1 155. A heater of resistance 10 ohm is connected to a 100 V supply. The current through the heater is BPSC TRE 4 General Science practice set 1 156. If the focal length of a convex lens is decreased, its power BPSC TRE 4 General Science practice set 1 157. Which type of lens is used to correct hypermetropia? BPSC TRE 4 General Science practice set 1 158. Which duct carries sperm from the epididymis toward the urethra in the male reproductive system? BPSC TRE 4 General Science practice set 1 159. The transfer of pollen grains from anther to stigma is called BPSC TRE 4 General Science practice set 1 160. Which organism reproduces asexually by spore formation? BPSC TRE 4 General Science practice set 1 161. Which type of medicine is used to reduce fever and relieve mild pain? BPSC TRE 4 General Science practice set 1 162. Which of the following is a modified root used for food storage? BPSC TRE 4 General Science practice set 2 163. If the focal length of a convex lens is decreased, its power will BPSC TRE 4 General Science practice set 2 164. The Tyndall effect is related to BPSC TRE 4 General Science practice set 2 165. The speed of light in vacuum is approximately BPSC TRE 4 General Science practice set 2 166. The radius of the nth Bohr orbit of a hydrogen atom is proportional to BPSC TRE 4 General Science practice set 2 167. Sound having a frequency below 20 Hz is known as BPSC TRE 4 General Science practice set 4 168. The Stefan-Boltzmann constant is represented by BPSC TRE 4 General Science practice set 2 169. Which of the following is a strong oxidising agent in acidic medium? BPSC TRE 4 General Science practice set 2 170. The SI unit of luminous flux is BPSC TRE 4 General Science practice set 3 171. Water flows through a pipe of cross-sectional area 4 cm² with speed 3 m/s. If the area becomes 2 cm², the speed becomes BPSC TRE 4 General Science practice set 3 172. The mineral name of lead(II) sulfate, PbSO4, is BPSC TRE 4 General Science practice set 3 173. The mineral name of lead(II) sulfate, PbSO4, is BPSC TRE 4 General Science practice set 3 174. Which element has the largest atomic radius among Na, Mg, Si and Cl? BPSC TRE 4 General Science practice set 3 175. Which of the following is generally classified as a day-neutral plant? BPSC TRE 4 General Science practice set 3 176. The exchange of oxygen and carbon dioxide between alveolar air and blood occurs mainly by BPSC TRE 4 General Science practice set 3 177. Which type of white blood cell can differentiate into antibody-secreting plasma cells? BPSC TRE 4 General Science practice set 3 178. Which satellite propulsion system was used for orbital manoeuvring of EOS-05? BPSC TRE 4 current affairs practice set 1 179. A wire has resistance R. If its cross-sectional area is doubled while its length remains unchanged, its new resistance will be BPSC TRE 4 General Science practice set 1 180. An electric heater consumes 2 kW of power for 3 hours. The electrical energy consumed is BPSC TRE 4 General Science practice set 1 181. The SI unit of power of a lens is BPSC TRE 4 General Science practice set 1 182. In a normal human eye, the image formed on the retina is BPSC TRE 4 General Science practice set 1 183. Which hormone is mainly produced by the ovaries and helps regulate the female reproductive cycle? BPSC TRE 4 General Science practice set 1 184. What is the usual result of fertilization in flowering plants? BPSC TRE 4 General Science practice set 1 185. Which of the following is NOT an example of asexual reproduction? BPSC TRE 4 General Science practice set 1 186. Which of the following is a common symptom of indigestion? BPSC TRE 4 General Science practice set 1 187. Which feature is characteristic of a stem rather than a typical root? BPSC TRE 4 General Science practice set 2 188. The SI-related practical unit of power of a lens is BPSC TRE 4 General Science practice set 2 189. Stars appear to twinkle mainly because of BPSC TRE 4 General Science practice set 2 190. The refractive index of a medium is defined as the ratio of BPSC TRE 4 General Science practice set 2 191. The energy of an electron in the nth orbit of a hydrogen atom is proportional to BPSC TRE 4 General Science practice set 2 192. Which characteristic of sound determines its pitch? BPSC TRE 4 General Science practice set 4 193. For a perfect blackbody, the emissive power is given by BPSC TRE 4 General Science practice set 2 194. The colour of aqueous potassium permanganate is mainly due to BPSC TRE 4 General Science practice set 2 195. The SI unit of illuminance is BPSC TRE 4 General Science practice set 3 196. Pascal's law is the basic principle behind BPSC TRE 4 General Science practice set 3 197. Which compound is commonly called minium? BPSC TRE 4 General Science practice set 3 198. Which compound is commonly called minium? BPSC TRE 4 General Science practice set 3 199. Which of the following correctly represents the atomic radius order from largest to smallest? BPSC TRE 4 General Science practice set 3 200. In photoperiodism, the organ that primarily perceives the photoperiodic signal is the BPSC TRE 4 General Science practice set 3 201. The tiny air sacs in the lungs where most gaseous exchange occurs are called BPSC TRE 4 General Science practice set 3 202. Which organ is considered a primary lymphoid organ where T lymphocytes mature? BPSC TRE 4 General Science practice set 3 203. At which orbital slot is EOS-05 planned to be positioned in geosynchronous orbit? BPSC TRE 4 current affairs practice set 1 204. If a wire is stretched to twice its original length without changing its volume, its new resistance becomes BPSC TRE 4 General Science practice set 1 205. If the current through a resistor is doubled while its resistance remains constant, the heat produced per second becomes BPSC TRE 4 General Science practice set 1 206. A lens has a power of +4 D. Its focal length is BPSC TRE 4 General Science practice set 1 207. The least distance of distinct vision for a normal human eye is approximately BPSC TRE 4 General Science practice set 1 208. Which hormone is mainly associated with the development of male secondary sexual characteristics? BPSC TRE 4 General Science practice set 1 209. After fertilization in a flowering plant, the ovule generally develops into a BPSC TRE 4 General Science practice set 1 210. How many parent organisms are generally involved in asexual reproduction? BPSC TRE 4 General Science practice set 1 211. Antacids primarily work by BPSC TRE 4 General Science practice set 1 212. Which underground stem is characterized by a horizontal growth habit and distinct nodes and internodes? BPSC TRE 4 General Science practice set 2 213. A convex lens has a focal length of 20 cm. Its power is BPSC TRE 4 General Science practice set 2 214. The Sun appears flattened near the horizon mainly because of BPSC TRE 4 General Science practice set 2 215. If the refractive index of glass is 1.5, the speed of light in glass is approximately BPSC TRE 4 General Science practice set 2 216. The energy of an electron in the ground state of hydrogen atom is BPSC TRE 4 General Science practice set 2 217. Which chemical compound in onion causes tears in the eyes? BPSC TRE 4 General Science practice set 4 218. A blackbody has radiant power per unit area E at temperature T. If its temperature becomes T/2, what fraction of the original radiant power per unit area remains? BPSC TRE 4 General Science practice set 2 219. When acidified KMnO4 acts as an oxidising agent, the purple colour disappears when MnO4− is reduced to BPSC TRE 4 General Science practice set 2 220. A 4 candela isotropic source produces total luminous flux equal to BPSC TRE 4 General Science practice set 3 221. The instrument used to measure pressure difference in a flowing fluid using the pressure change in a constricted passage is BPSC TRE 4 General Science practice set 3 222. Which of the following is a traditional white pigment containing basic lead carbonate? BPSC TRE 4 General Science practice set 3 223. Which of the following is a traditional white pigment containing basic lead carbonate? BPSC TRE 4 General Science practice set 3 224. Which pair represents elements belonging to the same group and shows increasing atomic radius from top to bottom? BPSC TRE 4 General Science practice set 3 225. Which pigment plays an important role in sensing red and far-red light in photoperiodic responses? BPSC TRE 4 General Science practice set 3 226. Which structure prevents food from entering the trachea during swallowing? BPSC TRE 4 General Science practice set 3 227. Which of the following is an example of innate immunity? BPSC TRE 4 General Science practice set 3 228. GSLV-F17 marked which flight number of India's GSLV? BPSC TRE 4 current affairs practice set 1 229. Five identical resistors, each of resistance 10 ohm, are connected in series. Their equivalent resistance is BPSC TRE 4 General Science practice set 1 230. Two resistors of 6 ohm and 3 ohm are connected in parallel across a 12 V battery. The total current drawn from the battery is BPSC TRE 4 General Science practice set 1 231. A lens has a power of -2 D. Which type of lens is it and what is its focal length? BPSC TRE 4 General Science practice set 1 232. The far point of a normal human eye is approximately BPSC TRE 4 General Science practice set 1 233. Which structure connects the uterus with the vagina? BPSC TRE 4 General Science practice set 1 234. After fertilization in a flowering plant, the ovary generally develops into a BPSC TRE 4 General Science practice set 1 235. Which method of asexual reproduction is commonly seen in Hydra? BPSC TRE 4 General Science practice set 1 236. Which type of medicine is commonly applied to the skin to prevent infection in minor cuts and wounds? BPSC TRE 4 General Science practice set 1 237. Which of the following is an example of a runner, a modified stem? BPSC TRE 4 General Science practice set 2 238. When a convex lens is placed in a medium with a refractive index closer to that of the lens than air, its focal length generally BPSC TRE 4 General Science practice set 2 239. Why does the sky appear comparatively dark to an astronaut in outer space? BPSC TRE 4 General Science practice set 2 240. If the frequency of a light wave is 5 × 10^14 Hz and its speed in a medium is 2 × 10^8 m/s, its wavelength is BPSC TRE 4 General Science practice set 2 241. The speed of an electron in the third Bohr orbit of hydrogen is approximately BPSC TRE 4 General Science practice set 2 242. Why do our eyes produce tears while cutting onions? BPSC TRE 4 General Science practice set 4 243. A blackbody emits radiation at rate E at temperature T. At what temperature will its radiation rate become 256E? BPSC TRE 4 General Science practice set 2 244. Which acid is represented by the formula CH3COOH? BPSC TRE 4 General Science practice set 2 245. A source has luminous intensity 20 candela. The luminous flux emitted into a solid angle of π steradian is BPSC TRE 4 General Science practice set 3 246. If the velocity of an ideal fluid at the same height changes from v to 2v, the change in its kinetic-pressure term 1/2ρv² is BPSC TRE 4 General Science practice set 3 247. The oxidation state of lead in PbO is BPSC TRE 4 General Science practice set 3 248. The oxidation state of lead in PbO is BPSC TRE 4 General Science practice set 3 249. Which of the following has the larger atomic radius? BPSC TRE 4 General Science practice set 3 250. For most short-day plants, flowering is promoted primarily by BPSC TRE 4 General Science practice set 3 251. Which pair is correctly matched? BPSC TRE 4 General Science practice set 3 252. Which sequence correctly describes normal inspiration? BPSC TRE 4 General Science practice set 3 253. Which cells can directly kill virus-infected or abnormal cells as part of cell-mediated immunity? BPSC TRE 4 General Science practice set 3 254. Which launch vehicle was used for the EOS-03 mission? BPSC TRE 4 current affairs practice set 1 255. Five identical resistors, each of resistance 10 ohm, are connected in parallel. Their equivalent resistance is BPSC TRE 4 General Science practice set 1 256. A 1000 W electric heater is operated for 2 hours. The electrical energy consumed is BPSC TRE 4 General Science practice set 1 257. Which lens is used to correct myopia (short-sightedness)? BPSC TRE 4 General Science practice set 1 258. The blind spot in the human eye is the point where BPSC TRE 4 General Science practice set 1 259. Which of the following produces sperm in the human male reproductive system? BPSC TRE 4 General Science practice set 1 260. Which part of a flower mainly attracts pollinators such as insects because of its colour and appearance? BPSC TRE 4 General Science practice set 1 261. Which method of asexual reproduction occurs in Leishmania? BPSC TRE 4 General Science practice set 1 262. Which of the following is NOT a primary function of an antacid? BPSC TRE 4 General Science practice set 1 263. Which of the following pairs is correctly matched? BPSC TRE 4 General Science practice set 2 264. Which statement about a concave lens in air is correct? BPSC TRE 4 General Science practice set 2 265. Which phenomenon is primarily responsible for the apparent visibility of a light beam in a dusty room? BPSC TRE 4 General Science practice set 2 266. When monochromatic light passes from one transparent medium to another, which pair of quantities generally changes? BPSC TRE 4 General Science practice set 2 267. If the electron speed in the first Bohr orbit of hydrogen is approximately 2.19 × 10^6 m/s, its speed in the second orbit is approximately BPSC TRE 4 General Science practice set 2 268. The tear-producing glands in humans are called BPSC TRE 4 General Science practice set 4 269. A blackbody emits radiant energy at rate E at temperature T. If its temperature is reduced to T/4, the new radiant energy rate will be BPSC TRE 4 General Science practice set 2 270. Which of the following is the formula of oxalic acid? BPSC TRE 4 General Science practice set 2 271. A surface is illuminated normally by a 12 candela point source placed 3 m away. The illuminance on the surface is BPSC TRE 4 General Science practice set 3 272. In a horizontal pipe, water has pressure 2.0 × 10^5 Pa and speed 2 m/s at one point. If its speed at another point is 6 m/s, taking water density as 1000 kg/m³, the pressure at the second point is BPSC TRE 4 General Science practice set 3 273. The oxidation states of the two lead atoms in Pb3O4 can be represented as BPSC TRE 4 General Science practice set 3 274. The oxidation states of the two lead atoms in Pb3O4 can be represented as BPSC TRE 4 General Science practice set 3 275. Which statement about atomic radius is correct? BPSC TRE 4 General Science practice set 3 276. What was the primary objective of EOS-03? BPSC TRE 4 current affairs practice set 1 277. Which element is particularly associated with the characteristic smell of many sulfur-containing onion compounds? BPSC TRE 4 General Science practice set 4 278. On which date was EOS-03 launched? BPSC TRE 4 current affairs practice set 1 279. Which chemical compound is commonly known as CS gas and is used as a tear agent? BPSC TRE 4 General Science practice set 4 280. What happened to the EOS-03 mission after launch? BPSC TRE 4 current affairs practice set 1 281. Tear gas primarily affects which parts of the human body? BPSC TRE 4 General Science practice set 4 282. Which launch vehicle carried EOS-04 into orbit? BPSC TRE 4 current affairs practice set 1 283. The term lachrymatory refers to a substance that BPSC TRE 4 General Science practice set 4 284. On which date was EOS-04 launched? BPSC TRE 4 current affairs practice set 1 285. Which chemical is commonly known as CS gas? BPSC TRE 4 General Science practice set 4 286. What causes stomata to open and close? BPSC TRE 4 General Science practice set 4 287. What type of radar imaging technology is associated with EOS-04? BPSC TRE 4 current affairs practice set 1 288. Which applications are associated with EOS-04? BPSC TRE 4 current affairs practice set 1 289. Which cells surround the stomatal pore? BPSC TRE 4 General Science practice set 4 290. Which launch vehicle is associated with both EOS-04 and the PSLV-C52 mission? BPSC TRE 4 current affairs practice set 1 291. The main function of stomata is BPSC TRE 4 General Science practice set 4 292. Which of the following correctly matches the satellite with its launch vehicle? BPSC TRE 4 current affairs practice set 1 293. Which hormone is strongly associated with stomatal closure during water stress? BPSC TRE 4 General Science practice set 4 294. What does NISAR stand for? BPSC TRE 4 current affairs practice set 1 295. What is another name for quicksilver? BPSC TRE 4 General Science practice set 4 296. NISAR is a joint Earth observation mission of which two space agencies? BPSC TRE 4 current affairs practice set 1 297. What is the chemical symbol of mercury? BPSC TRE 4 General Science practice set 4 298. Which launch vehicle launched the NISAR satellite? BPSC TRE 4 current affairs practice set 1 299. What is the atomic number of mercury? BPSC TRE 4 General Science practice set 4 300. Which two radar frequency bands are used by NISAR? BPSC TRE 4 current affairs practice set 1 301. Which metal is liquid at ordinary room temperature? BPSC TRE 4 General Science practice set 4 302. In which type of orbit was NISAR placed? BPSC TRE 4 current affairs practice set 1 303. Which of the following organisms is prokaryotic? BPSC TRE 4 General Science practice set 4 304. What is one major capability of the NISAR mission? BPSC TRE 4 current affairs practice set 1 305. Which group contains only prokaryotic organisms? BPSC TRE 4 General Science practice set 4 306. What does SpaDeX primarily demonstrate? BPSC TRE 4 current affairs practice set 1 307. Which structure is absent in a typical prokaryotic cell? BPSC TRE 4 General Science practice set 4 308. Which launch vehicle carried the SpaDeX satellites? BPSC TRE 4 current affairs practice set 1 309. Which of the following is a characteristic of prokaryotic cells? BPSC TRE 4 General Science practice set 4 310. On which date did ISRO successfully dock the two SpaDeX satellites? BPSC TRE 4 current affairs practice set 1 311. Which of the following is a unicellular eukaryotic organism? BPSC TRE 4 General Science practice set 4 312. On which date did ISRO successfully demonstrate SpaDeX undocking? BPSC TRE 4 current affairs practice set 1 313. Which of the following is a unicellular eukaryote? BPSC TRE 4 General Science practice set 4 314. Which unicellular organism moves using pseudopodia? BPSC TRE 4 General Science practice set 4 315. Which unicellular eukaryote is commonly used in bread and alcohol fermentation? BPSC TRE 4 General Science practice set 4 316. Who is credited with the first observation of bacteria using a microscope? BPSC TRE 4 General Science practice set 4 317. Who first used the term cell after observing cork? BPSC TRE 4 General Science practice set 4 318. Who is known as the father of microbiology? BPSC TRE 4 General Science practice set 4 319. Who proposed the cell theory along with Matthias Schleiden? BPSC TRE 4 General Science practice set 4 320. Which metal alloy is commonly used to manufacture heating elements of electric appliances? BPSC TRE 4 General Science practice set 4 321. Why is nichrome used in electric heating devices? BPSC TRE 4 General Science practice set 4 322. Which law explains the heating effect of electric current? BPSC TRE 4 General Science practice set 4 323. Which property is desirable for a material used as an electric heating element? BPSC TRE 4 General Science practice set 4 324. Angstrom is a unit of BPSC TRE 4 General Science practice set 4 325. One angstrom is equal to BPSC TRE 4 General Science practice set 4 326. Which scientist is associated with the angstrom unit? BPSC TRE 4 General Science practice set 4 327. Which of the following is the smallest unit of length among the given options? BPSC TRE 4 General Science practice set 4