ICSE ICSE Class 8 - CISCE Question Bank Solutions

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. 

Choose the most appropriate answer 

 A solvent of Iodine is

Fill in the blank

A pure substance has definite.................. and constant ..............

Fill in the blank

Use of a ................. to separate the components of a mixture of solids is based on the difference in the size of the components

Tick the most appropriate answer.

The constituents of a mixture are present in

1. a fixed ratio
2. a variable ratio,
3. the ratio of 2: 1
4. none of these

Tick the most appropriate answer

Solutions are

1. heterogeneous mixtures.
2. compounds
3. homogeneous mixtures.
4. elements

 Fill in the blan

An ________ is a homogeneous mixture of two or more metals.

Fill in the blank

Chalk powder dissolved in water is an example of a Chalk powder dissolved in water is an example of a _________.

Write true or false 

All pure substances have characteristic melting and boiling points.