Chemistry MCQs

Chemistry Multiple Choice Questions (MCQs) with answers Page-1. Following are the basic Chemistry Quizzes (equivalent to O-Level) for beginners. Find answers to the Questions at the bottom of the page.

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10

  1. Each day human body breathe in __________ liters of air.
    1. 5,000 to 10,000
    2. 10,000 to 15,000
    3. 15,000 to 20,000
    4. 20,000 to 25,000

  2. The most abundant element in the universe is __________.
    1. Hydrogen
    2. Oxygen
    3. Carbon dioxide
    4. Silicon

  3. The substance which increases the rate of chemical reaction is __________.
    1. Metal
    2. Catalyst
    3. Alloy
    4. Enzymes

  4. The average human body contains about __________ gram of Sodium Chloride.

    1. 190
    2. 210
    3. 230
    4. 250

  5. pH is an abbreviation for?
    1. Power of Hydrogen
    2. Possibility of Hydrogen
    3. Population of Hydrogen
    4. Position of Hydrogen

  6. The best soil pH value for most crops and plants is __________.
    1. 4.5
    2. 5.5
    3. 6.5
    4. 7.5

  7. __________ are biological catalysts.
    1. Enzymes
    2. Minerals
    3. Proteins
    4. Vitamins

  8. The most abundant constituent in Air is __________.
    1. Oxygen
    2. Hydrogen
    3. Carbondioxide
    4. Nitrogen

  9. Isotopes are atoms of the same element with different numbers of __________.
    1. Protons
    2. Electrons
    3. Neutrons
    4. Positron

  10. Over __________ of the elements in the Periodic Table are Metals.
    1. 60%
    2. 65%
    3. 70%
    4. 75%

ANSWERS: CHEMISTRY MCQS

  1. C
  2. A
  3. B
  4. D
  5. A
  6. C
  7. A
  8. D
  9. C
  10. D