Question

1. The most reactive metal is:

(a) Iron
(b) Gold
(c) Zinc
(d) Potassium


2. The liquid metal at room temperature

(a) Mercury
(b) Bromine
(c) Sodium
(d) Gold


3. Non-metals are:

(a) generally liquids
(b) generally gases
(c) generally solids and gases

(d) generally gases and liquids


4. The metal which is stored in kerosene:

(a) Phosphorus
(b) Magnesium
(c) Sodium


5. The non-metal which is liquid at room temperature is:

(a) Carbon
(b) Iodine
(c) Bromine
(d) Chlorine​

Answer 1

Answer:

1) zinc

2) mercury

3)gases

4)sodium

5)bromine

Answer 2

1) (d) Potassium

2)(a) Mercury

3)(b) generally gases

4)(c) Sodium

5)(c) Bromine

1. The most reactive metal is:

(a) Iron

(b) Gold

(c) Zinc

(d) Potassium

Potassium is more reactive than Sodium and Lithium because Potassium is bigger than them. So outermost electron is farther away from nucleus. So the ionization energy in K is less than that in Na or in Li. So Potassium is more reactive than many other metals.

2. The liquid metal at room temperature

(a) Mercury

(b) Bromine

(c) Sodium

(d) Gold

Mercury has a unique electron configuration which strongly resists removal of an electron, making it behave similarly to noble gas elements. As a result, mercury forms weak bonds and is a liquid at room temperature. Mercury dissolves to form amalgams with gold, zinc, and many other metals.

3. Non-metals are:

(a) generally liquids

(b) generally gases

(c) generally solids and gases

(d) generally gases and liquids

4. The metal which is stored in kerosene:

(a) Phosphorus

(b) Magnesium

(c) Sodium

Sodium is stored in kerosene as it is a very highly reactive metal. If it is kept in open air, it easily reacts with the oxygen and catches fire.

5. The non-metal which is liquid at room temperature is:

(a) Carbon

(b) Iodine

(c) Bromine

(d) Chlorine​

One non-metal, bromine, is a liquid at room temperature. The other non-metals are solids at room temperature, including carbon and sulfur.

hope it helps !!