Chemistry MCQs

Question 1

German silver is an alloy of

Accepted Answer

Zinc, copper and nickel

Answer

Copper, nickel and silver

Answer

Silver, copper and aluminium

Answer

Zinc, silver and copper

Question 2

Which one of the following does not contain Silver ?

Accepted Answer

German Silver

Answer

Ruby Silver

Answer

Lunar Caustic

Answer

Horn Silver

Question 3

Type metal used in printing press is an alloy of

Accepted Answer

Lead and antimony

Answer

Lead and copper

Answer

Lead and bismuth

Answer

Lead and zinc

Question 4

Ultra purification of a metal is done by :

Accepted Answer

Zone melting

Answer

Slugging

Answer

Smelting

Answer

Leaching

Question 5

Brass gets discoloured in air due to constant exposure in presence of:

Accepted Answer

Hydrogen sulphide

Answer

Aluminium phosphide

Answer

Hydrogenated wafers

Answer

Aluminium sulphide

Question 6

Which of the following is not present in German silver?

Accepted Answer

Silver

Answer

Copper

Answer

Nickel

Answer

Zinc

Question 7

Haloarenes are more stable than haloalkanes due to

Accepted Answer

Resonance effect

Answer

Inductive effect

Answer

Hyper conjugative effect

Answer

All of them

Question 8

The unit of ionic product of water (Kw) is :

Accepted Answer

Mol2 let-2

Answer

Mol2 let-1

Answer

Mol-1 let-2

Answer

Mol-1 let-1

Question 9

Aluminium chloride is

Accepted Answer

Lewis Acid

Answer

Bronsted Lowry Acid

Answer

Arrhenius Acid

Answer

Lewis Base