Previous year MCQs

UPPSC 2012 GS-1 General science
Question

The most important part of a computer is

Answer & Solution

Answer: (Detailed Solution Below)

Option A: CPU

Detailed Solution:

The correct answer is “CPU”.
CPU (Central Processing Unit) is the most important part of the computer as it performs the main function of information processing.

Similar Questions:

Which of the following is an example of herbicide?
  1. A) Sodium chlorate
  2. B) Potassium permanganate
  3. C) Bleaching powder
  4. D) None of the above
Stars obtain their energy from:

1. Nuclear fusion
2. Gravitational contraction
3. Chemical reaction
4. Nuclear fission

Select your answer from the codes given below:
Codes:
  1. A) 1 and 2
  2. B) 1, 2 and 3
  3. C) 1 and 4
  4. D) 2 and 4
Which of the following us used in the treatment of blood cancer?
  1. A) lodine-131
  2. B) Sodium-24
  3. C) Phosphorus-32
  4. D) Cobalt-60
Fruits stored in a cold chamber exhibit longer storage life because:
  1. A) exposure to sunlight is prevented
  2. B) concentration of carbon dioxide in the environment is increased
  3. C) rate of respiration is decreased
  4. D) there is an increase in humidity
The diamond appears lustrous because of:
  1. A) Reflection
  2. B) Refraction
  3. C) Total Internal Reflection
  4. D) Scattering
What is Jarvik-7?
  1. A) Electronic foot
  2. B) Pacemaker
  3. C) Artificial heart
  4. D) Artificial eye
Who has the right under the Constitution to seek the opinion of the Supreme Court on question of law:
  1. A) President
  2. B) Any High Court
  3. C) Prime Minister
  4. D) All the above
The brain is responsible for
  1. A) thinking
  2. B) regulating the heartbeat
  3. C) balancing the body
  4. D) All of the above three
Which of the following is an element?
  1. A) Sand
  2. B) Diamond
  3. C) Marble
  4. D) Sugar
Assertion (A): Coal based thermal power stations contribute to acid rains.
Reason (R): Oxides of carbon are emitted when coal burns.

Select the correct answer using the code given below:
Code:
  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
Given below are two statements one is labelled as Assertion (A) and the other as Reason (R).

Assertion (A): Phytoplankton grow in abundance in the limnetic zone.
Reason (R): Limnetic zone is open water zone.

Select the correct answer from the code given below:
Code:
  1. A) (A) is false but (R) is true
  2. B) (A) is true but (R) is false
  3. C) Both (A) and (R) are true but (R) is not the correct explanation of (A)
  4. D) Both (A) and (R) are true and (R) is the correct explanation of (A)
Which of the following regions of India have been designated as biodiversity hot spots? Select the correct answer from the codes given below:

1. Eastern Himalaya
2. Eastern Ghat
3. Western Ghat
4. Western Himalaya

Codes:
  1. A) 4 and 2 only
  2. B) 1 and 3 only
  3. C) 2 and 4 only
  4. D) 3 and 4 only