Previous year MCQs

General science UPPSC 2006 GS-I
Question

"Threat of global warming" is increasing due to increasing concentration of

Answer & Solution

Answer: (Detailed Solution Below)

Option D: Carbon dioxide

Detailed Solution:

The correct answer is “Carbon dioxide”.
Carbon dioxide (CO2) is the primary greenhouse gas responsible for global warming and climate change. The combustion of fossil fuels, deforestation, and other human activities have led to an increase in atmospheric CO2 concentrations, contributing to the warming of the Earth's atmosphere.

Similar Questions:

Consider the following statements and give the answer with the help of codes given below:

Assertion (A): Only one side of the moon's surface is visible from the earth.
Reason (R): The period of rotation of the moon on its axis is equal to the period of its revolution round the earth.

Code:
  1. A) Both A and R are correct and R is the correct explanation of A.
  2. B) Both A and R are correct but R is not the correct explanation of A.
  3. C) A is correct but R is wrong.
  4. D) A is wrong but R is correct.
CNG used in automobiles to check pollution, mainly consists of
  1. A) H2
  2. B) CH4
  3. C) CO2
  4. D) N2
Given below are two statements:

Assertion (A): Powers for conducting elections to the Parliament and State Legislatures in a free and fair manner have been given to an independent body i.e. the Election Commission.

Reason (R): Powers of removal of Election Commissioners is with the executive.

In the context of above, which one of the following is correct?
Code:
  1. A) Both A and R are true and R is the true explanation of A
  2. B) Both A and R are true but R is not the true explanation of A
  3. C) A is true but R is false
  4. D) A is false but R is true
Consider according to Buddhism:

Assertion (A): There is no rebirth
Reason (R): There is no soul.

Now select your answer from the following code:
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
The temperature of the human body:
  1. A) decreases in winters
  2. B) increases in summers
  3. C) neither decreases in winters nor increases in summers
  4. D) increases in winters
Polythene bags cannot be destroyed because it is made:
  1. A) From Non degradable substances
  2. B) From inorganic compounds
  3. C) From polymers
  4. D) From protein
With reference to the radioactivity, which of the following statements is/are correct ?

1. Radioactivity is a nuclear property.
2. Hydrogen bomb is prepared on the principle of nuclear fission.

Select the correct answer using the codes given below.
Codes :
  1. A) Only 1
  2. B) Only 2
  3. C) Both 1 and 2
  4. D) Neither 1 nor 2
Rajya Sabha can delay the Finance Bill sent for its consideration by Lok Sabha for a maximum period of
  1. A) One month
  2. B) One year
  3. C) Seven days
  4. D) Fourteen days
"Chilgoza" is obtained from the seeds of a species of:
  1. A) Pine
  2. B) Palm
  3. C) Cycus
  4. D) Deodar
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
Match List-I with List-II and select the correct answer by using the codes given below the lists:
List-I List-II

A. LED - 1. 'Bubble boy' Syndrome
B. LCD - 2. Bird disease
C. SARS - 3. Cost-effective light source
D. SCID - 4. Popular and effective mobile screen

Code: A B C D
  1. A) 2 3 1 2
  2. B) 4 3 2 1
  3. C) 1 2 4 3
  4. D) 3 4 2 1
Soundwaves:
  1. A) can travel in vacuum
  2. B) can travel in solids
  3. C) can travel only in gases
  4. D) can travel both in solid and gaseous medium