ICSE ICSE Class 8 - CISCE Question Bank Solutions for Chemistry

State how carbon monoxide finds application in preparation of an alcohol. [Give balanced equations for the same]

Name the following:

An acid formed when carbon dioxide is dissolved in water under pressure.

Name the following:

The gaseous product obtained when carbon monoxide is passed over heated iron [III] oxide.

Select the appropeiate option of the following statement:

The type of coal with the highest carbon conent.

Select the appropeiate option of the following statement:

An allotrope of carbon obtained by burning kerosene oil in a limited supply of air.

Select the appropeiate option of the following statement:

A nitrogenous fertilizer obtained from carbon dioxide.

Select the appropeiate option of the following statement:

A compound which finds use for a victim of carbon monoxide poisoning.

Give a balanced equation for the following conversion: [In one or two steps]

Coke to water gas.

Give a balanced equation for the following conversion: [In one or two steps]

Calcium bicarbonate to calcium nitrate using a dilute acid.

Give a balanced equation for the following conversion: [In one or two steps]

Lime water [soln. of calcium hydroxide] to calcium bicarbonate.

Give a balanced equation for the following conversion: [In one or two steps]

Carbon dioxide to carbon.

Give a balanced equation for the following conversion: [In one or two steps]

A metallic oxide to calcium carbonate.

Complete the statement by filling the blank with the correct word from the option.

Adsorption capacity of wood charcoal is increased by passing ______ over wood charcoal, at high temperature.

Complete the statement by filling the blank with the correct word from the option.

______ Chemistry is the Chemistry of carbon compounds mainly of ‘Carbon’, ‘Hydrogen’ & ‘Oxygen’.

Complete the statement by filling the blank with the correct word from the option.

Sodium oxide combines with carbon dioxide to give _____

Give reason for the following:

It is dangerous to stand behind a running engine of a vehicle.

Give reason for the following:

Both CO₂ & SO₂ turn lime water milky. Moist potassium permanganate paper, helps in distinguishing the two gases.

Give a reason for the following:

Carbon monoxide and not carbon dioxide, is a highly poisonous gas.

Give reason for the following:

Lime water finds application for testing both carbon dioxide & carbon monoxide gas individually.

Differentiate between the terms – ‘Ion’ and ‘radical’ with suitable examples.