Reaction of Metals with Bases

Q. What happens when Aluminium reacts with sodium hydroxide?

Q. Most of the metal oxides are insoluble in water but some dissolve in water. What are these oxides and their solution in water called ?

Q.

what does hydrocloric acid and calcium react to give?

Q.

The elements whose oxides can turn limus solution red are:
(a) lithium and sodium (b) co.

copper and potassium
(c) carbon and hydrogen (d) phosphorus and sulphur

Q.

Write the balanced chemical equation for the following:

Zinc and hydrochloric acid react to give zinc chloride and hydrogen gas.

Q. When sodium hydroxide reacts with aluminium metal:

1. sodium aluminate and water gas are formed
2. sodium aluminate and hydrogen gas are formed.
3. no reaction
4. can't say

Q.

do metal oxides reacts with non metal oxides ? why ? what are the products ? give example ?

Q. When magnesium ribbon is burnt in air, the ash formed is ________ in nature.

1. acidic
2. basic
3. neutral
4. amphoteric

Q.

When NaOH reacts with metal a X, the following reaction takes place:

$NaOH+X\to N{a}_{2}Zn{O}_2+Y$

Identify X and Y.

1. X is Na and Y is H₂

2. X is Cu and Y is H₂O

3. X is Zn and Y is H₂O

4. X is Zn and Y is H₂

Q.

Mostly oxides of non-metals are:

1. Basic

2. Acidic

3. Alkaline

4. Amphoteric

Q. When a piece of X is added to a sodium hydroxide solution, a gas Y is produced. Identify X and Y.

1. X- Gold Y- Hydrogen
2. X- Zinc Y- Hydrogen
3. X- Charcoal Y- Carbon dioxide
4. X- Aluminium Y- Carbon dioxide

Q. Gold reacts with base to produce salt and hydrogen.

1. True
2. False

Q. When a base combine with metal it forms metal salt/base and releases:

1. oxygen
2. hydrogen
3. carbon dioxide
4. nitrogen

Q. If we dip a piece of aluminium foil in sodium hydroxide:

1. temperature needs to be defined
2. iron hydroxide and sodium metal will be formed
3. hydrogen gas is liberated
4. no reaction takes place

Q. When $NaOH$ reacts with zinc it releases water.

1. True
2. False