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b) Do not lose their own properties
c) Sometimes lose some times do not lose their properties
d) Retain their own properties
Q4 Assertion: The components of sugar solution can be separated by 1
evaporation.

Reason: Sugar solution is an impure substance.

Q5 Assertion: Gold is an element 1

Reason: Gold contains gold atoms which are alike

Q6 Compounds are _____________ substances and contain same type 1
of___________

Q7 The components of a mixtures can be separated by physical methods 1
of separation. (True/False)

Concept: Difference between elements compounds and mixtures

Q1. In which of the following the constituents do not lose their own 1
properties
a) Salt solution
b) Water
c) Common salt
d) sugar
Q2 Which of the following can be separated only by chemical means of 1
separation?
a) Air
b) Soil
c) Water
d) Sugar solution
Q3 The mixtures do not have sharp melting and boiling points. 1
a) They are homogeneous
b) They are pure substances
c) They can be separated by physical means
d) They have a visible boundary.
Q4 Assertion: Elements and compounds are pure substances. 1

Reason: They have sharp melting and boiling points

Q5 Assertion: Mixtures do not have fixed properties. 1

Reason: The components of mixture do not lose their own properties.

Q6 Compounds have different _____________ which are _____________ 1
combined.