An……….. is a pure chemical substance made up of same type of atoms?
a) element
b) compound
c) both a & b
d) none of these
Symbol is short name of: NTS PST 24/11/2019 (8:30)
a) atom
b) Molecule
c) Element
d) all of these
A……….. Contains atoms of different elements chemically combined together in a fixed ratio.
a) element
b) compound
c) both a & b
d) none of these
Which of the following is the example of mixture?
a) air
b) tea
c) alloys
d) all of these
Sublimation is a technique that helps chemists to
a) Break
b) Melt
c) Purify
d) Freeze
A coffee filter is used to separate coffee liquid from ground; this is a suitable for
a) Sublimation
b) Distillation
c) Filtration
d) Evaporation
