Copper is mostly used in……………………..
a) Roofing
b) Construction
c) Electric equipment
d) Plumbing
Simple chromatography is carried out on ……
Napkin
b) Book
c)Tissue Paper
d) Paper
Non-metals are dull in appearance, this is why they do not reflect……….
a) Light
b) Rays
c) Electricity
d) Heat
Air is mixture of ……………………
a) Solution
b) Gases
c) Compound
d) Mixture
A technique in which two liquids are separated by heating process is known as
a) Sublimation
b) Distillation
c) Filtration
d) Evaporation
The separation technique used to separate a volatile substance from a non-volatile substance is called…… NTS PST (B) -------2021
a) purification
b) Filtration
c) Distillation
d) Decontamination
