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Nature of Matter MCQs
1. Which of the following is not a pure substance?
a) Copper
b) Gold
c) Sugar solution
d) Water
Answer: Sugar solution
2. What are pure substances classified as?
a) Elements and Atoms
b) Molecules and Compounds
c) Elements and Compounds
d) Atoms and Molecules
Answer: Elements and Compounds
3. When two or more atoms of different elements combine with each other in a fixed ratio, the molecule of a ____ is obtained.
a) Compound
b) Element
c) Atom
d) Ion
Answer: Compound
4. Compounds cannot be separated by chemical methods.
a) True
b) False
Answer: False
5. Point out an example of a compound.
a) Sugar solution
b) Hydrogen
c) Ammonia
d) Sodium
Answer: Ammonia
6. Water is a/an _______
a) Element
b) Compound
c) Pure substance
d) Mixture
Answer: Compound
7. The substances whose compositions are not uniform and different components are mixed are called _______
a) Homogenous substances
b) Heterogeneous substances
c) Pure substances
d) Elements
Answer: Heterogeneous substances
8. A ________ is made up of two or more pure substances which may be in any ratio.
a) Mixture
b) Element
c) Molecule
d) Atom
Answer: Mixture
9. Matter can be divided into two types i.e. mixture and pure substance.
a) True
b) False
Answer: True
10. Which among the three states of matter has a definite shape and size?
a) Solids
b) Liquids
c) Gases
d) Vapor
Answer: Solids