Which process can be used to separate salt from the mixture of salt and water?
a) filtration
b) sublimation
c) paper chromatography
d) distillation
How can you see the colors of
chemicals present in bright-colored chocolate beans?
a) by distillation
b) by sublimation
c) by paper chromatography
d) by filtration
One molecule of oxygen gas is made of………
a) two similar oxygen atoms
b) one oxygen and one hydrogen atoms
c) two hydrogen and one oxygen atoms
d) sodium and oxygen atoms
The symbol of “Mercury” is………
a) Fe
b) Hg
c) Cl
d) Au
“Na” is the symbol of sodium whose Latin name is……….
a) neutron
b) natrlium
c) nartium
d) natrium
“Ag” is the symbol of…………
a) Silver
b) Sulphur
c) Lodine
d) none of these
