Question

[118]. Read the following passage carefully and answer the question.

Passage: Himalayan glaciers are slow rivers of ice that store water in winter and release it in summer, feeding great rivers on which millions depend for farming, drinking water and power. A glacier moves only a few metres a year, yet over centuries it carves valleys and carries rocks far from their source. Today many Himalayan glaciers are retreating: their fronts pull back, meltwater lakes grow behind fragile ice dams, and the timing of river flow changes. The causes are complex, involving warming air, dust on ice and changing snowfall. The consequences, however, are practical and immediate for farmers who plan sowing by river flow. Understanding glaciers is therefore not only a matter of science but of food and livelihood.

What is the main idea of the passage?

1.
Himalayan glaciers are vital water stores whose retreat affects farming, drinking water and power.
2.
A public library is a shared free space that preserves memory and builds critical judgement in readers.
3.
Careful observation of an unexpected result led to penicillin, later purified into a life-saving medicine.
4.
Coral reefs are fragile, biodiverse ecosystems that shelter marine life and protect coasts from waves.
Answer (Detailed Solution Below)

Option 1 : Himalayan glaciers are vital water stores whose retreat affects farming, drinking water and power.

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Detailed Solution

सही उत्तर Himalayan glaciers are vital water stores whose retreat affects farming, drinking water and power. है।

Key Points

The passage centres on: Himalayan glaciers are vital water stores whose retreat affects farming, drinking water and power.

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Question:

[118]. Read the following passage carefully and answer the question.

Passage: Himalayan glaciers are slow rivers of ice that store water in winter and release it in summer, feeding great rivers on which millions depend for farming, drinking water and power. A glacier moves only a few metres a year, yet over centuries it carves valleys and carries rocks far from their source. Today many Himalayan glaciers are retreating: their fronts pull back, meltwater lakes grow behind fragile ice dams, and the timing of river flow changes. The causes are complex, involving warming air, dust on ice and changing snowfall. The consequences, however, are practical and immediate for farmers who plan sowing by river flow. Understanding glaciers is therefore not only a matter of science but of food and livelihood.

What is the main idea of the passage?

1.
Himalayan glaciers are vital water stores whose retreat affects farming, drinking water and power.
2.
A public library is a shared free space that preserves memory and builds critical judgement in readers.
3.
Careful observation of an unexpected result led to penicillin, later purified into a life-saving medicine.
4.
Coral reefs are fragile, biodiverse ecosystems that shelter marine life and protect coasts from waves.

Correct Answer: Himalayan glaciers are vital water stores whose retreat affects farming, drinking water and power.

The passage centres on: Himalayan glaciers are vital water stores whose retreat affects farming, drinking water and power.

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