Previous year MCQs

General science UPPSC 1997 GS-I
Question

In cold countries alcohol is preferred to mercury as a thermometric liquid because:

Answer & Solution

Answer: (Detailed Solution Below)

Option A: alcohol has a lower freezing point

Detailed Solution:

The correct answer is “alcohol has a lower freezing point”.
Alcohol (such as ethanol) remains liquid at much lower temperatures compared to mercury, which freezes at about -39 °C.

Similar Questions:

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.
Which one of the following minerals is necessary to control heart beat?
  1. A) Sodium
  2. B) Sulphur
  3. C) Potassium
  4. D) Iron
Laser beam is used for:
  1. A) treatment of cancer
  2. B) treatment of heart
  3. C) treatment of eye
  4. D) treatment of kidney
Which of the following is the richest source of Vitamin C?
  1. A) Orange
  2. B) Apple
  3. C) Carrot
  4. D) Amla
Sulpha drug is which of the following types of drug?
  1. A) Antiseptic
  2. B) Analgesics
  3. C) Antipyretic
  4. D) Antibacterial
Which Article of the Indian Constitution deals with special provisions with respect to different states?
  1. A) Art. 369
  2. B) Art. 370
  3. C) Art. 371
  4. D) Art. 372
Match list-I with list-II and select the correct answer using the code given below:
List-I (Radioisotope) - List-II (Diagnostic use)

A. Arsenic - 74 - 1. Activity of thyroid gland
B. Cobalt - 60 - 2. Blood disorder
C. Iodine-131 - 3. Tumor
D. Sodium-24 - 4. Cancer

Code:
A B C D
  1. A) 1 2 3 4
  2. B) 4 3 1 2
  3. C) 3 4 1 2
  4. D) 4 3 2 1
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
Which of the following hormones is secreted by the Beta cell of Islet of Langerhans of Pancreas?
  1. A) Glucagan
  2. B) Adrenalin
  3. C) Insulin
  4. D) Aldosterone
It is comfortable to wear white clothes in summer because:
  1. A) They Reflect all the heat that is falling it
  2. B) Disfigure all the heat transmitted in the body
  3. C) They absorb sweat
  4. D) They provide coolness to the eyes
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.
Transhumance is practised by the:
  1. A) Bhotias
  2. B) Bhoksas
  3. C) Jaunsaris
  4. D) Tharus