Previous year MCQs

General science UPPSC 2001 GS-I
Question

Which of the following is not a greenhouse gas?

Answer & Solution

Answer: (Detailed Solution Below)

Option C: Oxygen

Detailed Solution:

The correct answer is “Oxygen ”.
Although crucial for life, oxygen is not a greenhouse gas. It doesn't trap heat in the atmosphere in the same way that CO2, methane, and water vapor do.

Similar Questions:

Match list-I with list-II and select the correct answer using the code given below the lists:
List-I (molecules) - List-II (elements present)

A. Vitamin B12 - 1. Magnesium
B. Haemoglobin - 2. Cobalt
C. Chlorophyll - 3. Copper
D. Brass - 4. Iron

Code:
A B C D
  1. A) 2 4 1 3
  2. B) 2 1 3 4
  3. C) 4 1 2 3
  4. D) 3 4 2 1
These days yellow lamps are frequently used as street light. Which one of the following is used in these lamps?
  1. A) Sodium
  2. B) Neon
  3. C) Hydrogen
  4. D) Nitrogen
In human eye light rays get transformed into neural impulses at:
  1. A) cornea
  2. B) pupil
  3. C) retina
  4. D) lens
Curry-leaf tree, native of India, has the potential of a multibillion dollar production for the pharmaceutical companies, as revealed by the British researches. Cure by curry-leaf is claimed for:
  1. A) Blood Pressure
  2. B) Diabetes
  3. C) Malaria
  4. D) Tuberculosis
Keeping pigs away from the human habitat is helpful in eradication of:
  1. A) Malaria
  2. B) Japanese encephalitis
  3. C) Elephantiasis
  4. D) Polio
Which one of the following is the bio-ethically non-controversial source of stem cells as an alternative to the highly controversial embryonic stem cells?
  1. A) Bone marrow-derived stem cells
  2. B) Amniotic fluid derived stem cells
  3. C) Blood of foetus
  4. D) Blood of babies
Human heart is made up of how many chambers?
  1. A) Only four
  2. B) Only one
  3. C) Only three
  4. D) Only two
The vaccine for Polio was first prepared by:
  1. A) Paul Ehrlich
  2. B) Jonas Salk
  3. C) Louis Pasteur
  4. D) Joseph Lister
A person with vision defect 'Myopia' can see:
  1. A) nearby objects clearly
  2. B) distant objects clearly
  3. C) nearby as well as distant objects clearly
  4. D) neither nearby nor distant objects clearly
Relative humidity is measured by:
  1. A) Hydrometer
  2. B) Hygrometer
  3. C) Lactometer
  4. D) Potentiometer
Which one of the following is used as the coolant in the "Fast Breeder Test Reactor" at Kalpakkam?
  1. A) Carbon dioxide
  2. B) Heavy water
  3. C) Sea water
  4. D) Molten sodium
Cyclotrons are used to accelerate?
  1. A) Neutrons
  2. B) Protons
  3. C) Atoms
  4. D) Ions