Chemistry [1 Mark Question Answer]

Name:
Gas with rotten egg smell.

Name:
Greenish-yellow gas which also bleaches.

Name:
Gases which has a sour taste.

Name:
A colourless gas which bleaches.

Name:
Two carbonates do not produce carbon dioxide on heating.

Name the gas which: Do not affect moist litmus.

Name the gas which: Turns moist red litmus blue.

Name the gas which: Extinguishes burning wooden splinter.

When an ammonium hydroxide solution is added to solution B, a pale blue precipitate is formed. This pale blue precipitate dissolves in excess ammonium hydroxide giving an inky blue solution. What is the cation present in solution B?

Sodium hydroxide solution is added to solution A. A white precipitate is formed which is insoluble in excess sodium hydroxide solution. What is the metal ion present in solution A?

A given white crystalline salt was tested as follows: A flame test on the salt gave a persistent golden-yellow colourisation. What conclusions can be drawn for the observation?

A given white crystalline salt was tested as follows: The addition of barium chloride solution into this solution gave a white precipitate. What conclusions can be drawn for the observation?

A given white crystalline salt was tested as follows: It dissolved in water and the resulting solution of the salt turned blue litmus red. What conclusions can be drawn for the observation?

Name the anion present in the following compound:
Compound D, when warmed with dilute sulphuric acid, gives a gas that turns acidified dichromate solution green.

Name the anion present in the following compound:
The action of heat on the insoluble compound C produces a gas which turns lime water turbid.

Name the anion present in the following compound:
When a barium chloride solution is added to a solution of compound B, a white precipitate insoluble in dilute hydrochloric acid is formed.

Name the anion present in the following compound:
Compound A, when warmed with concentrated sulphuric acid, gives a gas which fumes in moist air and which gives dense white fumes with ammonia.

From the following list of substances choose those which meet the description given below. Ammonium chloride, ammonium nitrate, chlorine, dilute hydrochloric acid, iron, lead nitrate, manganese (IV) oxide, silver nitrate, sodium nitrate, sodium nitrite, and sulphur.
Two compounds whose aqueous solutions give white precipitates with dilute hydrochloric acid.

State your observation when:
Lead nitrate solution and sodium chloride solution are mixed.

The gas evolved on reaction of aluminium with boiling concentrated caustic alkali solution.

Two gases which react with ammonia to form dense white fumes.

Dilute hydrochloric acid reacts with iron(II) sulphide.

A colourless gas which bleaches moist coloured flowers.

A reddish-brown gas obtained when lead nitrate crystals are strongly heated.

A colourless gas which on coming in contact with air, forms a reddish-brown gas.

A colourless gas which is neither combustible nor does it support combustion. It does not turn lime water milky.

A colourless gas having a disagreeable smell which it turns lead acetate paper black.

An extremely soluble gas in water, which forms dense white fumes with ammonia solution.

A colourless gas having a choking smell, which causes coughing.

A colourless gas having a sharp pungent smell, which gives dense white fumes with HCl.

A colourless gas which burns with a pale blue flame, forming carbon dioxide gas as the only product.

A colourless gas which rekindles glowing splint but cannot be used for breathing.

A colourless gas which forms an explosive mixture with air and water is the only product of combustion.

A compound which is insoluble in cold water, but soluble in hot water.

On treating with concentrated sulphuric acid, this salt changes from blue to white.

On heating, this salt changes from green to black.

The compound which is responsible for the green colouration when sulphur dioxide is passed through acidified potassium dichromate solution.

This gas turns moist lead acetate paper black.

The salt which gives a yellow residue on heating.

The salt formed when aluminium react with potassium hydroxide.

A hydrated salt that is blue in colour.

A double salt used for the sediment of muddy water.

A solution which can absorb oxygen.

A chloride which dissolves in ammonia to give a complex.

A salt soluble in hot water but insoluble in cold water.

A black metallic oxide which dissolves in nitric acid to give greenish blue solution.

The nitrate which gives a black residue on heating.

A nitrate which does not leave behind solid residue on heating.

A blue coloured nitrate.