Previous year MCQs

General science UPPSC 2022 GS-I
Question

Which of the following pairs is NOT correctly matched ?
Quantity – S. I. Unit

Answer & Solution

Answer: (Detailed Solution Below)

Option A: Activity of radio active substance – Curie

Detailed Solution:

The correct answer is “Activity of radio active substance – Curie”.
The SI unit of radioactivity is becquerel (बेकरेल) (Bq) and this term is named after Henri Becquerel. Unit of radioactivity is defined as: The activity of a quantity of radioactive material where one decay takes place per second.
Quantity S.I. Unit
Activity of radioactive substance Becquerel
Power of lens Diopter
Heat Joule
Pressure Pascal

Similar Questions:

Which of the following pairs is incorrectly matched?
  1. A) Thiamine - Beriberi
  2. B) Ascorbic acid - Scurvy
  3. C) Vitamin A - Colour- blindness
  4. D) Vitamin K - Blood clotting
By which amendment of the Constitution, ‘Delhi’ has been made National Capital Region ?
  1. A) 75th
  2. B) 73rd
  3. C) 70th
  4. D) 69th
Pressure inside a soap bubble is:
  1. A) More than atmospheric pressure
  2. B) Less than atmospheric pressure
  3. C) Equal to atmospheric pressure
  4. D) Half of atmospheric pressure
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
Match List-I with List-II and select the correct answer from the code given below the lists:
List-I(Physical quantities) - List-II (Units)

A. Acceleration - 1. Joule
B. Force - 2. Newton second
C. Work done - 3. Newton
D. Impulse - 4. Metre/second2

Code:
A B C D
  1. A) 1 2 3 4
  2. B) 2 1 4 3
  3. C) 4 3 1 2
  4. D) 3 4 2 1
At which temperature superconductivity can be of tremendous economic interest saving billions of rupees?
  1. A) At very low temperature
  2. B) At a temperature when semiconductor becomes a superconductor
  3. C) At room temperature
  4. D) At a very high temperature
Which one of the following pairs is NOT correctly matched ?
  1. A) Ishanverman – Harha stone inscription
  2. B) Sarvaverman - Gaya Copper Plate
  3. C) Jivit Gupta – Second – Deva Barnark inscription
  4. D) Ishwarverman – Jaunpur stone inscription
The radio-isotope used to detect blood clots in the circulatory system is:
  1. A) Arsenic-74
  2. B) Cobalt-60
  3. C) I-131
  4. D) Sodium-24
2, 4-D is:
  1. A) an insecticide
  2. B) an explosive
  3. C) a fungicide
  4. D) a herbicide
Match List - I with List - II and select the correct answer using the codes given below the lists:
List - I (Substance) - List - II (Use)

A. Blue Vitriol - 1. Artificial rain
B. Eosin - 2. Fungicide
C. Silver iodide - 3. Red ink
D. Zinc phosphide - 4. Rodenticide
  1. A) 2 3 4 1
  2. B) 2 1 3 4
  3. C) 2 3 1 4
  4. D) 2 4 1 3
In electric apparatus 'earth' is used:
  1. A) to reduce the expenditure
  2. B) because the apparatus used 3-phase
  3. C) for safety
  4. D) in the form of fuse
Consider the following statements and select the correct answer from the code given below:

1. Brass is a compound of copper and zinc.
2. Magnetite is the most important ore of aluminium.
3. Amalgam is that substance which basically contains mercury.
4. Potassium nitrate is one of the essential chemicals used in photography.

Code:
  1. A) 1 and 2
  2. B) 1 and 3
  3. C) 2 and 3
  4. D) 1, 3 and 4