Previous year MCQs

General science UPPSC 2024 GS-I
Question

Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R).

Assertion (A): CO2, SO2 and NO2 gases get dissolved in rain water and produce acid rain.
Reason (R): Atmospheric air is polluted due to high concentration of gases like carbon dioxide, sulphur dioxide and oxides of nitrogen.

Select the correct answer from the codes given below:

Answer & Solution

Answer: (Detailed Solution Below)

Option A: Both (A) and (R) are true and (R) is the correct explanation of (A).

Detailed Solution:

The correct answer is “Both (A) and (R) are true and (R) is the correct explanation of (A).”.
When gases like carbon dioxide (CO2), sulfur dioxide (SO2), and nitrogen oxides (NO2) dissolve in rainwater, they react to form acids (such as carbonic acid, sulfuric acid, and nitric acid), which leads to acid rain.

The high concentration of these gases in the atmosphere contributes to air pollution, which is a significant cause of acid rain formation.

Similar Questions:

Consider the following statements:

Assertion (A): Space Based Solar Power (SBSP) is considered to be made a national goal.
Reason (R): Supply of SBSP is 99% uninterrupted throughout the year, besides the enormity of energy availability.

Select the correct answers from the codes given below:
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.
In human eye light rays get transformed into neural impulses at:
  1. A) cornea
  2. B) pupil
  3. C) retina
  4. D) lens
Match List-I with List-il and choose the correct answer using the codes given below the lists:
List-I - List-II
(Essayist) - (Treatise)

A. Devana Bhatta - 1. Dan Sagar
B. Hemadri - 2. Parashar Madhav
C. Madhvacharya - 3. Chaturvarga Chintamani
D. Balial Sen - 4. Smnti Chandrika

Codes:
A B C D
  1. A) 2 4 1 3
  2. B) 1 4 2 3
  3. C) 3 2 1 4
  4. D) 4 3 2 1
Which kind of light waves are used in remote control of television:
  1. A) Visible light
  2. B) Infrared
  3. C) X-rays
  4. D) J-rays
With reference to the Age of Consent Act, 1891 consider the following statements:

1. It was Behramji Malabari, a Parsi reformer from Bombay, who advocated for this legislation.
2. The Act was supported by the extremist wing led by Bal Gangadhar Tilak.

Which of the above statements is/are correct?
  1. A) Only 2
  2. B) Neither 1 nor 2
  3. C) Only 1
  4. D) Both 1 and 2
Power of sun glass is:
  1. A) 0 Diopter
  2. B) 1 Diopter
  3. C) 2 Diopter
  4. D) 4 Diopter
The important metal used with iron to produce stainless steel is:
  1. A) carbon
  2. B) tin
  3. C) chromium
  4. D) aluminium
Biological Oxygen Demand(BOD) is a standard criteria for -
  1. A) Pollution assay in aquatic ecosystems
  2. B) Assaying 02 level in high altitude regions
  3. C) Measuring 02 level in blood
  4. D) Computing 02 level in forest ecosystems
One kilowatt-hour equals:
  1. A) 3.6 × 106 J
  2. B) 3.6 × 103 J
  3. C) 103 J
  4. D) 105 J
An earth satellite is kept moving in its orbit. It is due to the phenomenon of centripetal force provided by
  1. A) The rocket engine propelling the satellite
  2. B) The gravitational attraction of the Earth on the satellite
  3. C) The gravitational attraction of the Sun on the satellite
  4. D) The gravitational attraction of satellite on Earth
Pyrometer is used for measuring:
  1. A) Air Pressure
  2. B) Humidity
  3. C) High Temperature
  4. D) Intensity of Earthquake
Neutron was discovered by:
  1. A) Chadwick
  2. B) Rutherford
  3. C) Bohr
  4. D) Newton