Previous year MCQs

General science UPPSC 1994 GS-I
Question

Why does water boil at temperature below 100°C at higher altitudes?

Answer & Solution

Answer: (Detailed Solution Below)

Option A: The atmospheric pressure decreases and hence boiling point is lowered

Detailed Solution:

The correct answer is “The atmospheric pressure decreases and hence boiling point is lowered”.
At higher altitudes, the atmospheric pressure is lower than at sea level. This decrease in pressure means that water can reach its boiling point at a lower temperature.

Similar Questions:

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
The year 1986 was observed as the International Year of:
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  2. B) Blind
  3. C) Shelter for homeless
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List-I - List-II

A. Dry Ice - 1. Treatment of Cancer
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A B C D
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  2. B) 4 3 2 1
  3. C) 3 4 2 1
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  4. D) Polio, tetanus, whooping cough
Match List I with List II and select the correct answer from the code given below:
List-I - List-II

1. Clive - A. Removal of press restriction
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Code:
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List-I (Radioisotope) - List-II (Diagnostic use)

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Code:
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  1. A) 1 2 3 4
  2. B) 4 3 1 2
  3. C) 3 4 1 2
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