Previous year MCQs

General science UPPSC 2006 GS-I
Question

Cryogenic engines are used in

Answer & Solution

Answer: (Detailed Solution Below)

Option A: Rockets

Detailed Solution:

The correct answer is “Rockets”.
Cryogenic engines are used in: (1) Rockets

Cryogenic engines use cryogenic fuels, typically liquid hydrogen or liquid oxygen, which are stored at extremely low temperatures to achieve high thrust and efficiency in rocket propulsion.

Similar Questions:

Desert plants have longer root system because:
  1. A) High temperature of the soil encourages root growth
  2. B) Root grow in search of water
  3. C) Soil does not contain water, hence becomes compact and presses the roots to grow longer
  4. D) Roots move opposite to the solar heat
Assertion (A): Some bacteria can synthesise their own food.
Reason (R): These bacteria have green matter called chloroplasts.

Codes:
  1. A) Both A and R are true and R is the correct explanation of A
  2. B) Both A and R are true but R is not the correct explanation of A
  3. C) A is true but R is false
  4. D) A is false but R is true
Dinosaurs were:
  1. A) Cenozoic reptiles
  2. B) Mesozoic birds
  3. C) Palaeozoic amphibia
  4. D) Mesozoic reptiles
Which of the following substances is obtained from a tree ?
  1. A) Asafoetida
  2. B) Bitumen
  3. C) Tincal
  4. D) None of the above
Match the columns with Lists-I and II and select the correct answer with the help of code given below:
List-I - List-II

A. High Velocity - 1. Mach
B. Wavelength - 2. Angstrom
C. Pressure - 3. Pascal
D. Energy - 4. Joule
Code:

A B C D
  1. A) 2 1 3 4
  2. B) 1 2 4 3
  3. C) 1 2 3 4
  4. D) 2 1 4 3
Which of the following has the highest velocity?
  1. A) Cosmic rays
  2. B) Light
  3. C) Electron
  4. D) Supersonic wave
Which of the following is a stem?
  1. A) Turnip
  2. B) Ginger
  3. C) Carrot
  4. D) Sweet potato
Which one of the following is not responsible for the depletion of ozone layer:
  1. A) CFC-12 used in refrigerators
  2. B) Methyl chloroform used as solvent
  3. C) HALON-1211 used in fire fighting
  4. D) Nitrous oxide
What least number must be subtracted from each of the numbers, 14, 17, 34, 42 so that the ratio of first two is the same as the ratio of the next two?
  1. A) 0
  2. B) 1
  3. C) 3
  4. D) 7
Which of the following is correct?
  1. A) All the blood in the body is absorbed through the kidneys
  2. B) All the blood in the body passes through the kidneys
  3. C) All the blood in the body is filtered through the kidneys
  4. D) All the blood in the body is made through the kidneys
By which name Chanakya was known in his childhood?
  1. A) Ajaya
  2. B) Chanakya
  3. C) Vishnugupta
  4. D) Deogupta
The pathogen responsible for common cold is:
  1. A) Orthomixo virus
  2. B) Rhino virus
  3. C) Leukaemia virus
  4. D) Polio virus