Science Quiz MCQ

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Q. For a fixed mass of gas at constant temperature, if we decrease volume, the pressure will
(A) also decrease
(B) increase
(C) remains constant
(D) none of these

The answer is: (B) increase ☑

Q. The lifespan of Red Blood Cells is __________ days.
(A) 60
(B) 120
(C) 180
(D) 240

The answer is: (B) 120 ☑

Q. The density of water is
(A) 1 g/cm3
(B) 1.5 g/cm3
(C) 2 g/cm3
(D) none of these

The answer is: (A) 1 g/cm

Q. Radioactivity was discovered by
(A) Lord Kelvin
(B) J. J. Thomson
(C) Ernest Rutherford
(D) Henri Becquerel

The answer is: (D) Henri Becquerel ☑

Q. The Sun’s mass is mainly consist of hydrogen (about 73%). The second main constituent (about 25%) is
(A) hydrogen
(B) helium
(C) carbon dioxide
(D) nitrogen

The answer is: (B) helium ☑

Everyday Science MCQs
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