UP PCS PRE Physics SINCE 1994

Showing 141 - 160 of 224 entries

141. Liquid crystals are used in

  • A
  • Wrist watches

  • B
  • Display devices

  • C
  • Pocket calculators

  • D
  • All the above

Show Answer
Correct Answer : D [All the above]

142. Which one of the following is named ‘Hansa-2’?

  • A
  • A Satellite

  • B
  • A trainer aircraft

  • C
  • A submarine

  • D
  • Surface to surface missile

Show Answer
Correct Answer : B [A trainer aircraft ]

143. India’s short range missile is

  • A
  • Agni

  • B
  • Arjun

  • C
  • Nag

  • D
  • Prithvi

Show Answer
Correct Answer : D [Prithvi ]

144. A biojector is:

  • A
  • an H.I.V. immunisation syringe

  • B
  • a bioplastic injector

  • C
  • a painless needle injector

  • D
  • a painless needleless injector

Show Answer
Correct Answer : D [a painless needleless injector ]

145. Which one of the following is used as the coolant in the  ‘Fast Breeder Test Reactor’ at Kalpakkam:

  • A
  • Carbon dioxide

  • B
  • Heavy water

  • C
  • Sea water

  • D
  • Molten sodium

Show Answer
Correct Answer : D [Molten sodium ]

146. Which one of the following is not related with space  terminology:

  • A
  • Telemetering

  • B
  • Weightlessness

  • C
  • Cis-lunar

  • D
  • Byte

Show Answer
Correct Answer : D [Byte]

147. Cyclotrons are used to accelerate:

  • A
  • Neutrons

  • B
  • Protons

  • C
  • Atoms

  • D
  • Ions

Show Answer
Correct Answer : C [Atoms]

148. Water Jet Technology finds application in

  • A
  • irrigation

  • B
  • drilling of mines

  • C
  • fire fighting

  • D
  • mob control

Show Answer
Correct Answer : B [drilling of mines ]

149. To avoid ‘knocking’ of the engine of a car, which one of  the following is used as an anti-knocking agent?

  • A
  • Ethyl alcohol

  • B
  • Butane

  • C
  • Lead tetraethyl

  • D
  • White petrol

Show Answer
Correct Answer : C [Lead tetraethyl]

150. Which is the correct chronological order of the  following space programmes?  A. APPLE B. IGMD  C. STEP D. SITE  Codes:  A B C D

  • A
  • B C D A

  • B
  • D C A B

  • C
  • C A D B

  • D
  • A C D B

Show Answer
Correct Answer : B [D C A B ]

151.  What is the function of a pacemaker?

  • A
  • It decreases the heartbeat

  • B
  • It regulates the heartbeat

  • C
  • It increases the heartbeat

  • D
  • It accelerates blood supply to heart

Show Answer
Correct Answer : B [It regulates the heartbeat ]

152. The difference between nuclear reactor and atom bomb  is that:

  • A
  • There is no chain reaction in nuclear reactor whereas this happens in atom bomb.

  • B
  • The chain reaction in nuclear reactor is controlled.

  • C
  • The chain reaction in nuclear reactor is not controlled.

  • D
  • Atom bomb is based on nuclear fusion whereas in nuclear reactor, nuclear fission occurs.

Show Answer
Correct Answer : B [The chain reaction in nuclear reactor is controlled. ]

153. Which one of the following is not correct?

  • A
  • Theory of evolution was propounded by Charles Darwin.

  • B
  • The breaking apart of the nucleus of an atom is called fusion.

  • C
  • ‘Dry ice’ is nothing but solid carbon dioxide.

  • D
  • Telephone was invented by Graham Bell.

Show Answer
Correct Answer : B [The breaking apart of the nucleus of an atom is called fusion. ]

154. Which one of the following is not matched?

  • A
  • Y2K – Computer

  • B
  • Arthritis – Uric acid

  • C
  • Noise pollution – Decibel

  • D
  • PARAM 10,000 – Land-to-land missile

Show Answer
Correct Answer : D [PARAM 10,000 – Land-to-land missile ]

155. Geneco Technology is:

  • A
  • Defence system for prevention from AIDS

  • B
  • A method for the development of species for food crops

  • C
  • Technique for pre-information regarding genetic diseases

  • D
  • Technique for prevention of cataract

Show Answer
Correct Answer : C [Technique for pre-information regarding genetic diseases ]

156. 2, 4-D is:

  • A
  • an insecticide

  • B
  • an explosive

  • C
  • a fungicide

  • D
  • a herbicide

Show Answer
Correct Answer : D [a herbicide ]

157. The computer hardware, made up of silica, which can  store plenty of data is called:

  • A
  • Disk

  • B
  • Chip

  • C
  • Magnetic Tape

  • D
  • File

Show Answer
Correct Answer : C [Magnetic Tape]

158. The controversial Terminator Technology backed by  developed nations seeks to provide:

  • A
  • bio-technologically improved varieties of seeds which are ensured to yield sterile seeds for next generation

  • B
  • transgenic seeds which ensure no-terminating passage of good traits generation after generation

  • C
  • selective termination of crop diseases

  • D
  • hybrid seed that can be eaten but not grown

Show Answer
Correct Answer : A [bio-technologically improved varieties of seeds which are ensured to yield sterile seeds for next generation]

159. Which one of the following is not achieved by  transgenics?

  • A
  • Production of biodegradable plastics

  • B
  • Production of edible vaccines

  • C
  • Production of cloned animals

  • D
  • Production of transgenic crops

Show Answer
Correct Answer : A [Production of biodegradable plastics ]

160. Assertion (A): ‘Golden rice’ is biotechnnological  achievement to the benefit of consumers as much as the  farmers.  Reason (R): The yellow colour of this rice reflects high  level of betacarotene, a compound that is converted to  Vitamin A in the body.  Codes:

  • A
  • Both A and R are true and R is the correct explanation of A.

  • B
  • Both A and R are true, but R is not the correct explanation of A.

  • C
  • A is true, but R is false.

  • D
  • A is false, but R is true.

Show Answer
Correct Answer : A [Both A and R are true and R is the correct explanation of A.]
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