(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Give electron dot diagram of the following:
Magnesium chloride

Give electron dot diagram of the following:
nitrogen

Give electron dot diagram of the following:
methane

(i) How many atoms of each kind are present in the following molecules: calcium oxide, chlorine, water, carbon tetrachloride?
(ii) How many electrons are required for their octet structure?

Complete the following:

Name an alkali metal in period 3 and halogen in period 2.

Name the noble gas with 3 shells.

Write the probable colour of the following salt:

Ferrous salts

Write the probable colour of the following salt:

Ammonium salts

Write the probable colour of the following salt:

Cupric salts

Write the probable colour of the following salt:

Calcium salts

Write the probable colour of the following salt:

Aluminium Salts

Name a colourless cation not a representative element.

What is a ‘salt’?

Name a salts whose solubility increases with temperature.

Name a salt whose solubility decreases with temperature.

Explain ‘salt hydrolysis’

name two salts which are acidic.

name two salts which are basic.

name two salts which are neutral, when dissolved in water.