Chemistry Questions

_______contributes towards global warming so it is called a greenhouse gas.

Fill in the blank with the most appropriate option.

Ethanol is denatured to ___.

Apart from proposing atomic theory, what did John Dalton researched on?

Isotopes have ______.

I. similar physical quantities and different chemical properties

II. different physical properties

III. similar chemical properties

In a combination reaction there can be ______.

I. two or more than two reactants

II. two or more than two products

III. only one product

Washing soda is used ______.

I. for removing permanent hardness of water

II. for disinfecting drinking water

III. as a cleaning agent for domestic purpose

An atom can achieve octet by ______.

I. sharing electron

II. gaining electron

III. losing electron

Ionic compounds ______.

I. have high boiling point

II. have high melting point

III. conduct electricity in solution