Practical chemistry

The gas produced when excess ammonia reacts with chlorine

• Nitrogen

• Hydrogen

• Chlorine

• HCl

A gas which produce acidified potassium dichromate to green

• Nitrogen dioxide

• Chlorine

• Sulphur dioxide

• Hydrogen Sulphide

Tags

NGSS.HS-PS1-2

Colourless gas which has sharp pungeant smell and gives dense white fumes with HCl

• Nitrogen dioxide

• Sulphur dioxide

• Hydrogen sulphide

• Ammonia

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Colourless gas which turns lead acetate paper black

• Oxygen

• Hydrogen

• Carbon dioxide

• Hydrogen Sulphide

The gas evolved when dil.Sulphuric acid reacts with sodium sulphite

• Hydrogen sulphide

• Sulphur dioxide

• Sulphur

• Carbon dioxide

Tags

NGSS.HS-PS1-2

When silver nitrate react with dil.HCl and forms

• White ppt of AgCl

• Green ppt of AgCl

• Blue ppt of AgCl

• Orange ppt of AgCl

Tags

NGSS.HS-PS1-2

The confirmatory test of Nitrogen dioxide is

• Turns cobalt chloride paper pink

• Turns nessler reagent brown

• Turns red litmus blue

• Turns acidified ferrous sulphate soln brown

Carbon dioxide and sulphur dioxide gas can be distinguished by using

• moist blue litmus paper

• Lime water

• Acidified potassium dichromate paper

• None of the above

Which one of the following will not produce acid when made to react with water

• Carbon monoxide

• Carbon dioxide

• Nitrogen dioxide

• Sulphur trioxide

Tags

NGSS.HS-PS1-2

When a freshly prepared solution of ferrous sulphate is added to the salt solution and a conc sulphuric acid is gently poured from the side of the test tube,a brown ring is formed which indicates the presence of

• sulphite ion

• sulphate ion

• carbonate ion

• nitrate ion