Chemistry Questions

A ‘breath test’ used by traffic police to check drunken driving uses ____?

An atom can achieve octet by ______.

I. sharing electron

II. gaining electron

III. losing electron

Brass gets discoloured in air because of the presence of which of the following gases in air  ?

Which of the following statements are CORRECT?

I. Ethanol is a good solvent for organic compounds.

II. Boiling and melting points of ethanol are low with respect to water.

III. Ethanol is used tincture iodine

Saturated carbon compounds can form which types of chain structures?

I. Straight chain

II. Branched chain

Water which is suitable for drinking is called _______________ water.

What is the structure of IF7 ?

Which statement(s) is/are CORRECT regarding Dalton’s Atomic theory?

I. All matters are made of very tiny particles.

II. Atoms of different elements have different masses and chemical properties.

III. The relative number of atoms is variable in any compound.