Previous year MCQs

General science UPPSC 2000 GS-I
Question

Which one of the following salts contributes maximum to the salinity of sea water?

Answer & Solution

Answer: (Detailed Solution Below)

Option D: Sodium chloride

Detailed Solution:

The correct answer is “Sodium chloride”.
Sodium chloride, or common salt, is the most abundant salt in seawater, making up about 85% of the salt in the ocean.

Similar Questions:

Pencil lead is:
  1. A) graphite
  2. B) charcoal
  3. C) lamp blac
  4. D) coal
We obtain turmeric from which part of the plant?
  1. A) Stem
  2. B) Root
  3. C) Fruit
  4. D) Flower
Which one of the following minerals is necessary to control heart beat?
  1. A) Sodium
  2. B) Sulphur
  3. C) Potassium
  4. D) Iron
Desert plants have longer root system because:
  1. A) High temperature of the soil encourages root growth
  2. B) Root grow in search of water
  3. C) Soil does not contain water, hence becomes compact and presses the roots to grow longer
  4. D) Roots move opposite to the solar heat
The Annual Plan of Uttar Pradesh for the Year 2000-2001 has been fixed at:
  1. A) Rs. 5,000 crore
  2. B) Rs. 7,000 crore
  3. C) Rs. 9,000 crore
  4. D) Rs. 11,400 crore
The normal temperature of human body is:
  1. A) 98.4°F
  2. B) 98°F
  3. C) 98.8°F
  4. D) None of the above
Given below are two statements, one labelled as:

Assertion (A): Human body synthesises all the vitamins required by it.
Reason (R): Vitamins are essential for proper growth of the body.

Select the correct answer from the codes give below:
  1. A) Both (A) and (R) are true and (R) is the correct explanation of (A)
  2. B) Both (A) and (R) re 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
Television signals cannot be received beyond a certain distance because:
  1. A) Signals are weak
  2. B) Antenna is weak
  3. C) Air absorbs signals
  4. D) The surface of the earth is curved
The recent Central Government Notification of the rules for the manufacture and use of virgin or recycled plastic carry bags or containers was made in exercise of power of conferred under:
  1. A) The Environment (Protection) Act, 1986
  2. B) The Bureau of India Standards Specification entitled 'The guidelines for recycling of plastics'
  3. C) The orders of Delhi high Court
  4. D) The orders of the Supreme Court
Match list I with list II and select the correct answer from the code given below:
List-I (Acid) - List-II (Source)

A. Lactic acid - 1. Lemon
B. Acetic acid - 2. Rancid butter
C. Citric acid - 3. Milk
D. Butyric acid - 4. Vinegar

Code:
A B C D
  1. A) 1 4 3 4
  2. B) 3 4 1 2
  3. C) 2 3 4 2
  4. D) 3 2 3 1
Accumulation of which one of the following in the muscles leads to fatigue?
  1. A) Lactic acid
  2. B) Benzoic acid
  3. C) Pyruvic acid
  4. D) Uric acid
Match List-I with List-II and select the correct answer using the codes given below:
List I - List II

A) Kevlar - 1) Explosive
B) Taxol - 2) Synthetic fibre
C) Zink Phosphide - 3) Anticancer drug
D) Nitrocellulose - 4) Rodenticide
  1. A) A-2, B-4, C-3, D-1
  2. B) A-2, B-3, C-4, D-1
  3. C) A-4, B-3, C-1, D-2
  4. D) A-3, B-1, C-2, D-4