ICSE ICSE Class 8 - CISCE Question Bank Solutions for Chemistry

Name the type of reaction which is governed by the position of a metal in the metal activity series ?

Define the following:

Bone black

Give two uses for the following:

lampblack

Name the chemicals required for the preparation of carbon dioxide in the laboratory.

In the industrial method of preparation of hydrogen by the Bosch process give the balanced equations for the first two main steps in the production of hydrogen.

In the industrial method of preparation of hydrogen by the Bosch process give the reason for use of addition of a promoter to the catalyst in the final step.

In the industrial method of preparation of hydrogen by the Bosch process give the name of the solution which absorbs the unreacted carbon monoxide.

Give reason for the following:

In Bosch process – the final gaseous products are passed through caustic potash [KOH] soln.

Select the correct options for the following statement:

The metallic compound used as a catalyst in Bosch process.

Select the correct options for the following statement:

In Bosch process the catalytic reduction of steam to hydrogen is carried out by ___.

Using a magnesium ribbon, how would you prove that a given gas jar contains carbon dioxide.

Classify the following reaction into – 

1. Direct combination 
2. Decomposition
3. Displacement
4. Double decomposition

The reaction is – Zinc reacts with copper [II] sulphate to give zinc sulphate and copper.

Give a balanced equation for –

A displacement reaction involving a metal above hydrogen in the activity series with copper [II] sulphate solution

Select the correct answer for the statement given below:

The displaced product of the displacement reaction of sodium with cold water.

Define: Elements

Give two examples for the following: Metals

Name a soft metal.

Classify the following substances into compounds and mixtures:

Give one example for the following type of mixtures
solid-solid homogenous mixture.

Define mixture.