Previous year MCQs

General science UPPSC 1996 GS-I
Question

What is the function of the thermostat in a refrigerator?

Answer & Solution

Answer: (Detailed Solution Below)

Option C: To maintain constant temperature

Detailed Solution:

The correct answer is “To maintain constant temperature”.
A refrigerator thermostat is a device within a refrigerator that regulates its temperature by turning the cooling system on and off based on the interior temperature compared to the set desired temperature. The key to preserving food effectively in a refrigerator lies in maintaining the right temperature.

Similar Questions:

"Dronacharya" Award is given in recognition of:
  1. A) Best coaching in sports
  2. B) Best research work in medicines
  3. C) Best N.C.C. cadet
  4. D) Best wrestler
Which one of the following pairs is correctly matched?
  1. A) Pneumonia - Lungs
  2. B) Cataract - Thyroid gland
  3. C) Jaundice - Eye
  4. D) Diabetes - Liver
Which one of the following is associated with 'Albedo'?
  1. A) Transmitting power
  2. B) Absorbing power
  3. C) Emissive power
  4. D) Reflecting power
Photovoltaic cells are:
  1. A) Solar cells
  2. B) Thermal cells
  3. C) Sulphur cells
  4. D) Molar cells
Television viewers using dish antenna to receive satellite signals do not receive signals during rain because:

(A) Of the small size of the antenna.
(B) Rain droplets absorb the energy of radio waves.
(C) Rain droplets disperse the energy of radio waves from their original direction.

Which of the above statements are correct?
  1. A) Only A
  2. B) Only A and B
  3. C) Only B and C
  4. D) A, B and C
Which hormone is injected to cows and buffaloes to make the milk descend to the udders?
  1. A) Somatotropin
  2. B) Oxytocin
  3. C) Interferon
  4. D) Insulin
While lifting a bucket of water from a well, we feel that the bucket:
  1. A) becomes heavier above the surface of water
  2. B) becomes lighter above the surface of water
  3. C) looses stability on coming out of water
  4. D) has gained mass on coming out of water
Triple antigen is given to a child to prevent:
  1. A) Polio, smallpox, diphtheria
  2. B) Diphtheria, whooping cough, tetanus
  3. C) Smallpox, whooping cough, tetanus
  4. D) Polio, tetanus, whooping cough
Assertion 'A' and Reason 'R' are given below. Study them and choose the correct answer from the codes given below:

Assertion (A): Lightning conductors prevent buildings from damages.
Reason (R): It passes the charge to the earth.

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
What changes will the volume of water show if the temperature is lowered from 9 °C to 3 °C:
  1. A) the volume will not change
  2. B) the volume will first increase and then decrease
  3. C) the volume will first decrease and than increase
  4. D) water will freeze
When does heart rest?
  1. A) Never
  2. B) While sleeping
  3. C) Between two beats
  4. D) While doing yoga
The Indian Council Act of 1909 provided for
  1. A) Dyarchy
  2. B) Communal representation
  3. C) Federation
  4. D) Provincial autonomy