Home: Chemistry MCQs
Q. The coldest region of the Earth’s atmosphere is
(A) Mesopause
(B) Stratosphere
(C) Tropopause
(D) Stratopause
The answer is: (A) Mesopause ☑
Q. The melting point of water is ________ degree Celsius.
(A) 0
(B) 1
(C) 2
(D) 100
The answer is: (A) 0 ☑
Q. The total volume of water present on the Earth surface is
(A) 1.386 km3
(B) 1.386 million km3
(C) 1.386 billion km3
(D) 1.386 trillion km3
The answer is: (C) 1.386 billion km3 ☑
Q. The vital function of protoplasm is due to the presence of
(A) calcium
(B) fats
(C) minerals
(D) water
The answer is: (D) water ☑
Q. The quantity of fresh water present on the Earth’s surface is about
(A) 0.25%
(B) 2.5%
(C) 12.25%
(D) 25.5%
The answer is: (B) 2.5% ☑