Previous year MCQs

General science UPPSC 1996 GS-I
Question

Solar energy is due to:

Answer & Solution

Answer: (Detailed Solution Below)

Option B: Nuclear Fusion

Detailed Solution:

The correct answer is “Nuclear Fusion”.
Nuclear Fusion is the process responsible for solar energy. The Sun produces energy through nuclear fusion, where hydrogen atoms combine under extreme pressure and temperature to form helium, releasing a tremendous amount of energy in the process. This energy radiates outward from the Sun and reaches the Earth as solar radiation.

Similar Questions:

Consider the following statements about haemoglobin:

1) It carries oxygen in the blood.
2) It is iron containing compound.
3) It provides immunity against certain disease.
4) It imparts red colour to the blood.

The correct statements out of these are:
  1. A) 1,2 and 3
  2. B) 2, 3 and 4
  3. C) 1, 3 and 4
  4. D) 1, 2 and 4
Which of the following is NOT correctly matched?
  1. A) Desalination - Sea water
  2. B) Reverse osmosis - Potable water
  3. C) Denaturation - Proteins
  4. D) Pasteurisation - Tea
How much is one barrel of oil approximately?
  1. A) 131 litres
  2. B) 159 litres
  3. C) 179 litres
  4. D) 201 litres
Which one of the following is not related with ecological balance?
  1. A) Water management
  2. B) Afforestation
  3. C) Industrial Management
  4. D) Wild life protection
The main pollutant in the smoke coming from cigarette is:
  1. A) Carbon monoxide and Dioxicine
  2. B) Carbon monoxide and Nicotine
  3. C) Carbon monoxide and Benzene
  4. D) Dioxicine and Benzene
The plants receive nitrogen in form of
  1. A) Nitric oxide
  2. B) Nitrate
  3. C) Ammonia
  4. D) Nitride
The 'xylem' in plants is responsible mainly for:
  1. A) Transportation of food
  2. B) Transportation of amino acid
  3. C) Transportation of water
  4. D) Transportation of oxygen
The diamond appears lustrous because of:
  1. A) Reflection
  2. B) Refraction
  3. C) Total Internal Reflection
  4. D) Scattering
The best source of Vitamin C is:
  1. A) Apple
  2. B) Mango
  3. C) Amla
  4. D) Milk
The full form of SIM is:
  1. A) Subscriber’s Identity Module
  2. B) Subscriber’s Identity Machine
  3. C) Self Identity Machine
  4. D) Self Identity Module
The Gandhara School of art is the synthesis of:
  1. A) Indian and Persian Art
  2. B) Indian and Chinese Art
  3. C) Indian and Turko-Afghan Art
  4. D) Indian and Greek Art
The working principle of atom bomb is nuclear fission of uranium and the working principle of hydrogen bomb is:
  1. A) nuclear fusion of deuterium
  2. B) nuclear fission of thorium
  3. C) explosion of bomb involving hydrogen gas
  4. D) explosion involving dynamite and T.N.T.