Question

6.
(b) copper
(d) oxygen
7.1

A. MCQs-Choose the correct answers.
1. This is a nonmetal among the following.
(a) sodium
(b) copper
(c) iron
(d) oxygen
2. Which of these is the most ductile metal?
(a) sodium
(b) copper
(c) aluminium
(d) gold
3. This nonmetal has antiseptic properties.
(a) oxygen
(b) nitrogen
(c) iodine
(d) hydrogen
4. This gas is used for breathing and also for
burning
(a) nitrogen
(b) oxygen
(c) hydrogen
(d) chlorine
5. Metals react with water and liberate this gas.
(a) oxygen
(b) hydrogen
(c) sulphur
(d) nitrogen
6. Metals react with bases to form this gas.
(a) nitrogen
(b) oxygen
(c) chlorine (d) hydrogen
7. This gas is used for water purification.
(a) chlorine (b) nitrogen
(c) hydrogen
(d) sulphur
​

Answer 1

Here Is Your Answer:

1. Oxygen
2. Oxygen Gold
3. Oxygen GoldIodine
4. Oxygen GoldIodineOxygen
5. Oxygen GoldIodineOxygenHydrogen
6. Oxygen GoldIodineOxygenHydrogen Hydrogen
7. Oxygen GoldIodineOxygenHydrogen HydrogenChlorine