A form of carbon used for absorbing poisonous gases and purification of noble gases is
wood charcoal
animal charcoal
carbon fibres
carbon black
Correct answer is A
No explanation has been provided for this answer.
carbon (IV) oxide
carbon (II) oxide
soda
glucose
Correct answer is A
No explanation has been provided for this answer.
A gas that is not associated with global warming is
CO2
SO3
CH4
H2
Correct answer is D
No explanation has been provided for this answer.
The substance often use for vulcanization of rubber is
chlorine
hydrogen peroxide
sulphur
tetraoxosulphate (IV) acid
Correct answer is C
No explanation has been provided for this answer.
A phenomenon where an element exist in different forms in the same physical state is known as
isomerism
amorphism
allotropy
isotopy
Correct answer is C
No explanation has been provided for this answer.