Question

Match List – I with List – II

List – I	List – II
(a) 10 km height over earth’s surface	(i) Thermosphere
(b) 70 km height over earth’s surface	(ii) Mesosphere
(c) 180 km height over earth’s surface	(iii) stratosphere
(d) 270 km height over earth’s surface	(iv) Troposphere

• A. (a) – (ii), (b) – (i), (c) – (iv), (d) – (iii)
• B. (a) – (iv), (b) – (iii), (c) – (ii), (d) – (i)
• C. (a) – (iii), (b) – (ii), (c) – (i), (d) – (iv)
• D. (a) – (i), (b) – (iv), (c) – (iii), (d) – (ii)

Answer 1

The correct option is B

(a) – (iv), (b) – (iii), (c) – (ii), (d) – (i)

Correct answer is (b)

Troposphere

The troposphere starts at the Earth’s surface and extends 8 to 14.5 kilometres high (6 to 9 miles).Stratosphere

The stratosphere starts just above the troposphere and extends to 50 kilometres (31 miles) high.

Mesosphere

The mesosphere starts just above the stratosphere and extends to 85 kilometres (53 miles) high.

Thermosphere

The Thermosphere starts just above the mesosphere and extends to 600 kilometres (372 miles) high.

Ionosphere

The ionosphere is an abundant layer of electrons and ionized atoms and molecules that stretches from about 48 kilometres (30 miles) above the surface to the edge of space at about 965 km (600 mi).

Exosphere

This is the upper limit of our atmosphere. It extends from the top of the thermosphere up to 10000 km (6200mi).