Class 6 General Science Notes: - Unit-6: Elements and Compounds: Solved Exercise (MCQs)

A. MCQs (Choose the Correct Answers).

1. CO₂ is the chemical formula of carbon dioxide. What is the ratio of carbon and oxygen in carbon dioxide?

a. 3:1
b. 2:1
c. 1:2
d. 1:1

... Answer is c. 1:2
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2. The symbol of Sodium is

a. Ni
b. Ne
c. N
d. Na

... Answer is d. Na
--------------------------

3. Which of the following is an element?

a. Carbon dioxide
b. Water
c. Copper
d. Salt

... Answer is c. Copper
-------------------------

4. Sugar is a compound of

a. Carbon, Hydrogen, Oxygen
b. Hydrogen, Oxygen, Sodium
c. Calcium, Carbon, Oxygen
d. Molecule, Atom, Compound

... Answer is a. Carbon, Hydrogen, Oxygen
------------------------

5. Which of the following is a compound?

a. Cl
b. C
c. NaCl
d. O2

... Answer is c. NaCl
----------------------

6. Sodium and Chlorine combine to form

a. Sand
b. Chalk
c. Sugar
d. Salt

... Answer is d. Salt
------------------------

7. _______ is a combination of atoms: :

a. Atom
b. Molecule
c. Element
d. Gas

... Answer is b. Molecule
--------------------

8. What type of matter is made up of combining elements?

a. Solid
b. Element
c. Molecule
d. Atom

... Answer is c. Molecule
---------------

9. Which of these is the correct symbol for aluminium?

a. Al
b. aL
c. AL
d. al

... Answer is a. Al
------------------------
 

10. How many elements have been discovered so far?

a. 100
b. 118
c. 112
d. 114

... Answer is b. 118
----------------

MCQs of General Science Class-6:

Unit-1, Unit-2, Unit-3, Unit-4, Unit-5, Unit-6, Unit-7, Unit-8, Unit-9, Unit-10, Unit-11, Unit-12

Source: General Science Book (National Book Foundation, Pakistan)

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