Chemistry MCQs Questions with Answers Test. Basic chemistry quiz online test. The following chemistry multiple choice questions and answers are from basics of chemistry, inorganic chemistry, organic chemistry, and general knowledge of the chemistry subject. Link to Chemistry MCQs (PDF) is given below.

Chemistry MCQs

Q. Which from the following is NOT true about Helium gas?
(A) Colorless
(B) Odorless
(C) Tasteless
(D) Toxic

The answer is: (D) Toxic ☑

Q. When gas is ionized, ________ forms.
(A) Molecule
(B) Element
(C) Plasma
(D) Current

The answer is: (C) Plasma ☑

Q. The chemical name of chalk is
(A) Sodium nitrate
(B) Zinc sulfate
(C) Sulphuric acid
(D) Calcium carbonate

The answer is: (D) Calcium carbonate ☑

Q. Each day human body breathe in _______ liters of air.
(A) 5,000 to 10,000
(B) 10,000 to 15,000
(C) 15,000 to 20,000
(D) 20,000 to 25,000

The answer is: (C) 15,000 to 20,000 ☑

Q. The most abundant element in the universe is
(A) Hydrogen
(B) Oxygen
(C) Carbon dioxide
(D) Silicon

The answer is: (A) Hydrogen ☑

Q. The substance which increases the rate of chemical reaction is
(A) Metal
(B) Catalyst
(C) Alloy
(D) Enzymes

The answer is: (B) Catalyst ☑

Q. The average human body contains about _______ gram of Sodium Chloride.
(A) 190
(B) 210
(C) 230
(D) 250

The answer is: (D) 250 ☑

Q. pH is an abbreviation for?
(A) Power of Hydrogen
(B) Possibility of Hydrogen
(C) Population of Hydrogen
(D) Position of Hydrogen

The answer is: (A) Power of Hydrogen ☑

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Chemistry MCQs (PDF)
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