Question

E
XERCISE
c. any
A. Multiple Choice Questions (MCQs)
1. The most abundantly occurring element on the earth is
4. hydrogen
a. oxygen
b. silicon
c. aluminium
2. In a compound, elements are always present in a
a. fixed ratio
b. variable ratio
of the two
d. none of these
3. A mixture of ammonium chloride and sand is separated by
a. evaporation
b. decantation
c. filtration
d. sublimation
4. A mixture of alcohol and water can be separated by
a. filtration
b. separating funnel c. distillation
d. evaporation
5. The constituents of a mixture are present in
a. fixed ratio
b.
any
ratio
C. variable ratio
d. none of these
J. Fractional distillation is used to separate
a. solids from solids
b. solids from liquid c. liquids from liquids d. none of these
7. During filtration, the substance left behind on the filter
paper
is called
a. residue
b. filtrate
c. solution
d. none of these​

Answer 1

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