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ECAT – Chemistry

Chemistry multiple choice questions. These following sample questions are from  the basics of Chemistry.


Chemistry Sample Questions

1. 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

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

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

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

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


1. 5,000 to 20,000
2. Hydrogen
3. Catalyst
4. 250
5. Power of Hydrogen

6. The best soil pH value for most crops and plants is
(A) 4.5
(B) 5.5
(C) 6.5
(D) 7.5

7. __________ are biological catalysts.
(A) Enzymes
(B) Minerals
(C) Proteins
(D) Vitamins

8. The most abundant constituent in Air is
(A) Oxygen
(B) Hydrogen
(C) Carbondioxide
(D) Nitrogen

9. Isotopes are atoms of the same element with different numbers of
(A) Protons
(B) Electrons
(C) Neutrons
(D) Positron

10. Over __________ of the elements in the Periodic Table are Metals.
(A) 60%
(B) 65%
(C) 70%
(D) 75%


6. 6.5
7. Enzymes
8. Nitrogen
9. Neutrons
10. 75%

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