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

The product formed when ammonia reacts with oxygen is ______.

The metallic hydroxide which forms a deep inky blue solution with excess ammonium hydroxide solution is ______.

State one relevant observation for the following:

Burning of ammonia in excess of oxygen.

A compound which undergoes thermal dissociation.

On passing ammonia gas over heated copper oxide for some time, a reddish-brown residue is left behind. What property of ammonia is demonstrated here?

Ammonia burns in oxygen, as shown below.

\[\ce{4NH3 + 3O2 -> 2N2 + 6H2O}\]

If 240 cc of ammonia is burnt in 300 cc of oxygen, find out the composition of the resultant gaseous mixture at room temperature.

Ranjana wants to prove that ammonia is a reducing agent. To demonstrate this, she passes ammonia gas over heated copper oxide. What will she observe?

Ranjana wants to prove that ammonia is a reducing agent. To demonstrate this, she passes ammonia gas over heated copper oxide.

Write a balanced chemical equation for the Black copper oxide changes to a reddish brown/pink copper reaction.

Give balanced chemical equations for the following conversions A, B, and C:

Aluminium carbide reacts with water according to the following equation :

`Al_4C_3 + 12H_2O-> 4Al(OH)_3 + 3CH_4`

1)What mass of aluminium hydroxide is formed from 12g of aluminium carbide?

2) What volume of methane at s.t.p. is obtained from 12g of aluminium carbide?

[Relatively molecular weight of `Al_4Cl_3 = 144; Al(OH)_3 = 78]`

Draw an electron dot diagram for the formation of the following. State the type of bonding present in them.

Ammonium ion

What do you understand by an alkali?

Give one example in the following case:

A basic oxide which is soluble in water.

Give one example in the following case:

A hydroxide which is highly soluble in water.

Give one example in the following case:

A basic oxide which is insoluble in water.

Give one example in the following case:

A hydroxide which is insoluble in water.

Give one example in the following case:

A base which is not an alkali.

Give one example in the following case:

An oxide which is a base.

Give one example in the following case:

A base which does not contain a metal ion.

How would you obtain an alkali from a base.