Question

(b) Choose the correct answer from the options given below:
(i) The gas that causes the greenhouse effect:
A. Oxygen
B. Ammonia
C. Methane
D. Hydrogen sulphide
(1) According to the modem periodic law, the properties of elements are a periodic function of their
A Atomic volume
B. Atomic number
C. Atomic weight
D. Mass number
(iii) Which of the following has water of crystallization?
A. Potassium chloride
B. Sodium chloride
C. Sodium nitrate
D. Washing soda crystals
(iv) The gas which has a rotten egg smell is:
A. Hydrogen sulphide
B. Ammonia
C. Sulphur dioxide
D. Hydrogen chloride
(v) The temperature of 0° Celsius on the Kelvin scale is equal to:
А. -273 K B. 273 K
C.OK
D. 100 K
thomas cynlyed in each of the following cases:​

Answer 1

Answer:

i) methane

ii) atomic number

Answer 2

Explanation:

(i) The gas that causes the greenhouse effect

ans :- Methane.

2.According to the modem periodic law, the properties of elements are a periodic function of their atomic number.

(iii) Which of the following has water of crystallization?

ans:-Washing soda crystals

(iv) The gas which has a rotten egg smell is:

ans:-Hydrogen sulphide

(v) The temperature of 0° Celsius on the Kelvin scale is equal to

ans:-273 K