500 Science One-Line Questions Answered FOR RRB SSC Science Quiz

500 Science One-Line Questions Answered FOR RRB SSC Science Quiz

Questions related to General Science are compulsorily asked in all types of competitive exams. We are providing you with 500 such important questions which will prove to be very useful for your upcoming exams.

1. Which mammal has the largest eyes?

   Ans. Deer

2. Which country is the largest contributor to carbon dioxide (CO2) emissions today?

   Ans. United States of America

3. In which of the following industries mica is used as a raw material?

   Ans. Electricity

4. Who invented the electric press?

   Ans. Henry Scheele

5. Food gets cooked quickly in a pressure cooker because?

   Ans. The pressure inside the pressure cooker is high

6. Boiling point of water on increasing the pressure?

   Ans. grows up

7. 'For every action there is an equal and opposite reaction.' Newton's

   Ans. the third rule is

8. Which element is the enemy of copper?

   Ans. sulfur

9. Sun appears red while rising and setting, because?

   Ans. red color is least scattered

10. Who discovered radioactivity?

    Ans. Henri Becquerel

11. Two plane mirrors are inclined to each other at an angle of 60°. What will be the number of images formed of a ball placed between them?

    Ans. five

12. How does an air bubble inside water behave?

    Ans. a concave lens

13. Which unit has the same quantity in all arrangements of units?

    Ans. specific gravity

14. If a man is coming towards a plane mirror with a speed of 4 m/s, then with what speed would the image of the man in the mirror appear to be coming?

    Ans. 8 m/s

15. Which mirror is placed next to the driver's seat in cars, trucks and buses?

    Ans. convex mirror

16. Elements which have both metallic and non-metallic properties are called?

    Ans. metalloid

17. Who is the father of Botany?

    Ans. theophrastus

18. In which of the following the speed of sound will be maximum?

    Ans. in steel

19. A person is standing on a rolling stool with arms outstretched. Suddenly he shrugs his arms, then the angular velocity of the stool

    Ans. will increase

20. A bomb explodes on the moon. its voice on earth

    Ans. won't hear

21. The reason for the lack of atmosphere on the moon is

    Ans. escape velocity

22. If the length of a simple pendulum is increased by 4%, then its time period

    Ans. will increase by 2%

23. A girl is swinging on a swing. Another girl comes and sits near him, then the time period of the swing

    Ans. remain unchanged

24. We listen to the programs of different stations by turning the knob of the radio. it is possible

    Ans. due to resonance

25. What is known by 'venturimeter'?

    Ans. water flow rate

26. The ball keeps dancing in the spray of water at intersections because

    Ans. The pressure decreases as the velocity of water increases

27. If the earth shrinks to half of its present radius without changing the mass, then the day will be

    Ans. 12 hour

28. If a body is thrown from the earth with a velocity of 11.2 km/s, then the body

    Ans. never return to earth

29. What experiment should an astronaut use to find the time in a satellite?

    Ans. spring watch

30. If the radius of the earth decreases by 1%, but the mass remains the same, then the acceleration due to gravity on the surface of the earth will be

    Ans. will decrease by 2%

31. What is the unit of pressure?

    Ans. Pascal

32. must have cooking utensils

    Ans. high specific heat low conductivity

33. When water falls from a height in a waterfall, its heat

    Ans. increases

34. The melting point of ice on the Kelvin scale is

    Year. -0°K

35. The word Botany is derived from the word of which language?

    Ans. Greek

36. Curie is the name of whose unit?

    Ans. radioactive dharmita

37. Which color has the shortest wavelength?

    Ans. violet

38. If the door of the refrigerator kept in the room is opened, then the temperature of the room

    Ans. will increase

39. How many colors are there in rainbow?

    Ans. seven colors

40. What is the time period of 'second pendulum'?

    Ans. 2 seconds

41. Whose oath is administered to the students of medical science?

    Ans. Hippocrates

42. What is the function of a radiator in a car?

    Ans. keep engine cool

43. human body heat

    Year. 37°C

44. far sighted person

    Ans. Near objects are not visible

45. If the size of the printed letters is seen to increase on raising a lens placed above the book, then the lens

    Ans. is convex

46. If the size of the letters appears smaller through a lens, then the lens

    Ans. is concave

47. the stars twinkle

    Ans. due to refraction

48. Which of the following is a particle with no charge?

    Ans. neutrons

49. The study of internal structure of plants is called

    Ans. physiognomy

50. Which of the following color has the highest refractive index

    Ans. Purple

51. The depth of a pond filled with clean water appears to be 3 metres. If the refractive index of water with respect to air is 4/3, what will be the actual depth of the pond?

    Ans. 4 meters

52. What is the unit of power of lens?

    Ans. diopter

53. The working of radar is based on the following principle

    Ans. reflection of radio waves

54. Which of the following statements is true according to Newton's laws of motion?

    Ans. The definition of force is known from the second law.

55. What is the property of a body called, due to which it opposes any change in the state of rest or uniform motion in a straight line?

    Ans. Inertia

56. A person trapped in a swamp is advised to lie down because?

    Ans. pressure decreases as the area increases

57. When pieces of ice are pressed together, the pieces stick together because?

    Ans. Melting point of ice decreases with increase in pressure

58. On what principle does the cooling system in a motor car work?

    Ans. convection only

59. Which one of the following processes occurring in the body of living beings is a digestive process?

    Ans. breakdown of proteins into amino acids

60. Which type of electromagnetic radiation is used for remote control in a television?

    Ans. hertz or short radio waves

61. In whose atmosphere methane is present, that is?

    Ans. Jupiter

62. Which enzyme helps in the digestion of proteins?

    Ans. trypsin

63. In countries where the staple food of the people is polished rice, do people suffer?

    Ans. by beri-beri

64. Accumulation of which of the following in muscles causes fatigue?

    Ans. lactic acid

65. Is there a light year?

    Ans. distance traveled by light in one year

66. Which instrument is used to measure the depth of the ocean?

    Ans. pedometer

67. What material are the IC chips of computer made of?

    Ans. of silicon

68. The imaginary line that falls on a spherical mirror passing through the focus and pole is called?

    Ans. main axis

69. If the focus of an object falls on a concave mirror, then what will be its image?

    Ans. infinity

70. Which metal reacts with acid and base to extract hydrogen?

    Ans. Zinc

71. Who used the word biology for the first time?

    Ans. Lamarck and Treviranus

72. What is the unit of work?

    Ans. joule

73. Light year is the unit?

    Ans. of distance

74. A substance made up of only one type of atom is called?

    Ans. elements

75. A substance formed by combining two or more elements in a definite proportion in terms of quantity is called?

    Ans. Compound

76. The fluctuations in the frequency of a sound source are called?

    Ans. doppler effect

77. The number of vibrations that a particle makes in one second is called?

    Ans. frequency

78. The speed of sound in air is 332 m/s. If the pressure is doubled, what will be the speed of sound?

    Ans. 332 m/s

79. Which of the following is not a unit of time?

    Ans. light years

80. Parsec is the unit?

    Ans. of distance

81. Which of the following is a bad conductor of electricity in spite of being a metal?

    Ans. lead

82. In which of the following non-metals metallic luster is found?

    Ans. graphite,iodine

83. A balloon contains equal number of molecules of hydrogen and oxygen gas. If a hole is made in the balloon

    Ans. Hydrogen gas will come out faster

84. Little bits of camphor dance on the surface of the water

    Ans. due to surface tension

85. What is the maximum density of water?

    Ans. at 4°C

86. If two satellites revolve in the same circular orbit, then their

    Ans. velocities will be the same

87. If a packet is dropped from a satellite orbiting the earth, then

    Ans. will revolve around the earth with the same speed as the satellite

88. Which of the following is a compound?

    Ans. ammonia

89. The SI unit of Young's modulus of elasticity is

    Ans. newton/m2

90. candela is the unit

    Ans. light intensity

91. Water is a compound because

    Ans. It consists of two different elements joined by chemical bonds.

92. The science that deals with the study of living beings is called

    Ans. the biology

93. What is studied in Phycology?

    Ans. Algae

94. Joule is the unit of which of the following

    Ans. energy

95. When was the International System of Units introduced?

    Ans. 1971 AD

96. Bats fly in the dark because

    Ans. bats produce ultrasonic waves

97. Skating on ice demonstrates that, on increasing the pressure, the melting point of ice

    Ans. happens to

98. Stainless steel is an alloy, while air is a

    Ans. mixture

99. Environment is studied under which branch of biology?

    Ans. ecology

100. What is the science of flower cultivation called?

     Ans. floriculture

101. acceleration produced in a body by an unbalanced force

     Ans. is directly proportional to the force.

102. Which of the following is a floating particle

     Ans. neutrons

103. The components of the atomic nucleus are

     Ans. protons and neutrons

104. The study related to the cultivation of ornamental trees and shrubs is called

     Ans. arboriculture

105. Which lens is used in the spectacles of a person suffering from myopia?

     Ans. concave lens

106. Which lens is used in the spectacles of a person suffering from farsightedness?

     Ans. convex lens

107. force associated with action and reaction according to newton's third law of motion

     Ans. One should always be engaged in different things.

108. 'For every action there is an equal and opposite reaction.' it is

     Ans. Newton's third law of motion

109. What is studied in mycology?

     Ans. fungus

110. Swimming in water is possible because of which of Newton's laws of motion?

     Ans. third rule

111. 'A body will remain at rest as long as no external force acts on it.' Whose statement is this?

     Ans. newton

112. What are nucleons usually named for?

     Ans. protons and neutrons

113. the positron is a

     Ans. positively charged electrons

114. What is Agroforestry?

     Ans. planting woody perennials on the same land

115. Which of the following is studied in Exo-biology?

     Ans. outer planets and life in space

116. Monazite is the ore of?

     Ans. thorium

117. Bauxite is the main ore of which of the following?

     Ans. aluminum

118. What is carnallite a mineral of?

     Ans. magnesium

119. 'Gun metal' is the ore of?

     Ans. copper, tin and zinc

120. What is the reason for the characteristic odor of garlic?

     Ans. sulfur compound

121. Is it easily soluble in water?

     Ans. nitrogen

122. What is a type of heavy water?

     Ans. diluent

123. Which of the following is not a colloid?

     Ans. blood

124. Cheese is an example of?

     Ans. Gel

125. The spice at the end of a matchstick is a mixture of the following?

     Ans. red phosphorus and sulfur

126. Which one of the following is paramagnetic in nature?

     Ans. oxygen

127. The element which does not react with oxygen is

     Ans. iodine

128. Which of the following is the most stable element?

     Ans. lead

129. Which of the following is lighter than water?

     Ans. sodium

130. Which gas is present in normal tubelight?

     Ans. mercury vapor with argon

131. Scientist 'Edward Jenner' is associated with which of the following diseases?

     Ans. chicken pox

132. Which pollution causes kidney disease in humans?

     Ans. Cadmium (Cd)

133. B.C.G. Which of the following diseases is vaccinated against?

     Ans. Tuberculosis disease

134. What is the source of oxygen produced during photosynthesis?

     Ans. Water

135. Which part of the plant does respiration?

     Ans. leaf

136. Which gas is used for artificial ripening of unripe fruits?

     Ans. acetylene

137. How is the age of trees determined?

     Ans. depending on the number of annual rings

138. Which part of the donor's eye is used in eye donation?

     Ans. retina

139. What is the number of chromosomes in a normal human?

     Ans. 46

140. Which part of the human body has the longest bone?

     Ans. femur (thigh)

141. Which hormone is injected into the udders of cows and buffaloes to extract milk?

     Ans. oxytocin

142. Which statement is true regarding the test tube baby?

     Ans. The development of the baby takes place inside the test tube.

143. How many pairs of ribs are there in the human body?

     Ans. 12

144. Due to the accumulation of which fluid, the muscles start feeling tired?

     Ans. lactic acid

145. Where are red blood cells formed in mammals?

     Ans. in bone marrow

146. On what principle is the working of washing machine based?

     Ans. centrifuge

147. What is the application of low temperatures (cryogenics)?

     Ans. In space travel, magnetic levitation and telemetry

148. The tendency of a liquid drop to shrink to occupy the minimum area is due to?

     Ans. surface tension

149. Which of the following is a vector quantity?

     Ans. -Impulse

150. When an air bubble rises from the bottom of a lake to the upper surface, then its size?

     Ans. Will increase

151. Alpha particle has two positive charges, its mass is almost equal

     Ans. -310

152. The normal temperature of human body in Kelvin unit is

     Ans. of one atom of helium

153. What is the application of cryogenic engines?

     Ans. in rocket technology

154. Does light travel in vacuum?

     Ans. 3 X 108 m/s

155. Which of the following is a vector quantity?

     Ans. velocity

156. A precise clock is showing the time 3:00. What will be the time after the hour hand has rotated 135 degrees?

     Ans. 7:30

157. What is the average distance of an astronomical unit?

     Ans. between earth and sun

158.  

159. Who among the following had told before Newton that all objects are gravitated towards the earth?

     Ans. Aryabhata

160. On what principle does a jet engine work?

     Ans. linear momentum conservation

161. Why does the cyclist have to apply more force in the beginning? Who first used the word 'Biology'?

     Ans. The driver applies more force to overcome the inertia.

162. Who first used the word 'Biology'?

     Ans. Lamarck and Treviranus

163. Who is the father of 'Botany'?

     Ans. theophrastus

164. Who is considered the father of 'Medical Science'?

     Ans. Hippocrates

165. What is the study of flowers called?

     Ans. anthology

166. Where is the Forest Research Institute located?

     Ans. Dehradun

167. Where is the headquarter of 'Botanical Survey of India' located?

     Ans. Kolkata

168. Who among the following is known as the 'Father of Taxonomy'?

     Ans. Carl Warne Linnaeus

169. What is the basic unit of classification?

     Ans. species

170. Who first discovered bacteria?

     Ans. leuven hawk

171. In which true nucleus is absent?

     Ans. in bacteria

172. What Causes Food Poisoning?

     Ans. by Clostridium botulinum

173. Which of the following crops is helpful in nitrogen fixation?

     Ans. beans

174. Which of the following diseases is caused by bacteria?

     Ans. leprosy

175. Freezing of a substance containing micro-organisms is a process whose function is

     Ans. -Deactivating bacteria

176. The reason for curdling of milk is

     Ans. -Lactobacillus

177. What are the fungi that grow on the bark of trees called?

     Ans. corticals

178. Which of the following is the cause of scabies?

     Ans. fungus

179. Lichens are made up of which two groups of plants?

     Ans. fungi and algae

180. What are lichens indicative of?

     Ans. of air pollution

181. In which of the following is 'Mulabhas' found in place of root?

     Ans. in bryophytes

182. Which has the most number of chromosomes?

     Ans. in pteridophytes

183. Which of the following is a 'living fossil'? - Cycas

      

      

184. In which plant are respiratory roots found?

     Ans. in jusia

185. From what is 'Sabudana' obtained?

     Ans. from Sykes

186. Which of the following is not a root?

     Ans. potato

187. the column is the root

     Ans. - adventitious roots

188. From which part do roots develop?

     Ans. from the root

189. What is a type of carrot?

     Ans. Root

190. Which is the edible part of turmeric plant?

     Ans. rhizome

191. Onion is a modified form of

      

      

192. Electricity is supplied to homes at 220 volts. Displays 220 volts?

     Ans. average voltage

193. are in the nucleus of an atom?

     Ans. protons and neutrons

194. What is the unit of ampere?

     Ans. of electric current

195. To which classification of anatomy does the lobster belong?

     Ans. crustaceans

196. Which plants have the ability of nitrogen fixation?

     Ans. gram and other pulses

197. What is the function of a fuse in an electric circuit?

     Ans. protects electrical circuit

198. ultrasonic waves by humans

     Ans. - can't be heard

199. What is the time period of geostationary satellite?

     Ans. 24 hours

200. What is the frequency of ultrasonic waves?

     Ans. over 20,000 Hz

201. What is the unit of frequency?

     Ans. hertz

202. kg of sugar

     Ans. will be highest at sea level

203. Who is called the father of medical science?

     Ans. Hippocrates

204. What is the unit of lumen?

     Ans. of flame flux

205. A balloon filled with hydrogen gas is taken from the earth to the moon, then the balloon on the moon

     Ans. - will explode

206. If a lift is going up with a uniform velocity, then the weight of the person in it

     Ans. remain unchanged

207. Why does the kerosene in the wick of a lantern go on rising steadily?

     Ans. due to surface tension

208. The level of mercury in the barometer shows a sudden fall?

     Ans. storm

209. If a fan is running in a room, then the temperature of the air in the room

     Ans. - grows

210. Hot water takes 10 minutes to cool from 90°C to 80°C, then the time taken to cool from 80°C to 70°C is

     Ans. - more than 10 minutes

211. Two vectors whose values ​​are different?

     Ans. their resultant cannot be zero

212. A boat full of stones is floating in the river. If all the stones are dropped in the river, then the bottom of the shift

     Ans. - will remain the same

213. sound waves cannot travel

     Ans. in a vacuum

214. transformer is used

     Ans. - To convert alternating voltage high-low

215. The walls below the dam are made thick because

     Ans. Fluid pressure increases with increase in depth

216. The property of liquids, due to which it opposes the movement of its different layers, is called

     Ans. -viscosity

217. Which of the following is a compound

     Ans. -Sand

218. bleaching powder is

     Ans. -Compound

219. Viscosity of gases on increase of temperature

     Ans. -increases

220. Aquatic animals survive even after the freezing of lakes in cold countries because

     Ans. -Water under ice is at 4°C

221. If there were no atmosphere on Earth, the duration of the day

     Ans. - would have been more

222. Electric motor works according to the following principle

     Ans. -Faraday's law

223. Which of the following bombs destroys lives but does not cause any damage to buildings?

     Ans. neutron bomb

224. The following principle works in an atomic bomb

     Ans. - nuclear fission

225. Photoelectric cell

     Ans. -converts light into electricity

226. In which order are fans, bulbs etc. installed in houses?

     Ans. in parallel

227. Who discovered X rays?

     Ans. Ronjan has

228. Whose ore is pitch blandy?

     Ans. of radium

229. The rays emanating from radioactive substances are

     Ans. alpha rays, beta rays, gamma rays

230. Which of the following was discovered by James Chadwick?

     Ans. neutrons

231. are exponents of the binomial method

     Ans. -Carn Warne Linnaeus

232. What is ammonium chloride solution?

     Ans. acidic

233. Which of the following elements is an oxide in refrigeration?

     Ans. nitrogen

234. Which hormone rapidly increases the reproductive (egg production) of human females?

     Ans. estrogen

235. Prolog language developed?

     Ans. in 1972

236. Backbone is related to?

     Ans. from internet

237. When did the web come into existence?

     Ans. in america

238. Which of the following inert gas is not found in the atmosphere?

     Ans. argon

239. Which important metal is used along with iron in making stainless steel?

     Ans. Chromium

240. The filament of an electric bulb starts glowing when current is passed through it, but the wire carrying current in the filament does not glow. What is the reason of this?

     Ans. The resistance of the fiber is more than that of the wires.

241. How many watts are there in one horse power?

     Ans. 746 watts

242. Which of the following is a metalloid?

     Ans. Arsenic, Antimony, Bismuth.

243. Which of the following is a compound?

     Ans. ammonia

244. The nucleus of an atom contains the following particles?

     Ans. protons and neutrons

245. The study of plants that produce vegetables is called?

     Ans. alericulture

246. Which of the following is a chemical compound?

     Ans. ammonia

247. Suddenly a boy comes and sits on a rotating round table. What will be the effect on the angular velocity of the table?

     Ans. will decrease

248. is the force product?

     Ans. mass and acceleration

249. The branch of botany that deals with heredity and variation is called?

     Ans. genetics

250. Or of objects falling freely in the void?

     Ans. have uniform acceleration

251. Which physical quantity is obtained from the ratio of momentum and velocity of a substance?

     Ans. Mass

252. In which units can we measure food energy?

     Ans. calories

253. unit of electric current is

     Ans. -ampere

254. Which of the following is neither an element nor a compound

     Ans. -Wind

255. the fourth state of matter is

     Ans. -Plasma

256. study of flowers is called

     Ans. -Anthology

257. What is the unit of power of lens in SI-system?

     Ans. diopter

258. fossils are studied in botany

     Ans. - of fossils