Daily Quiz-165

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Chandigarh, Updated At : 02:14 PM Jul 21, 2025 IST

Lightning over field

1. Which of the following is NOT a benefit of natural lightning in ecosystems?

A. Supports forest regeneration

B. Sterilizes atmospheric pollutants

C. Fertilizes soil naturally

D. Balances Earth’s electromagnetic field

2. Lightning strikes are more frequent in regions that are:

A. Cold and humid

B. Flat and desert-like

C. Mountainous and snow-covered

D. Warm and moist with convective activity

3. The cause of charge separation within thunderclouds is primarily:

A. Coriolis force and cloud rotation

B. Vertical movement of water droplets and ice crystals

C. Ground-level temperature inversions

D. Earth’s magnetic field

4. Lightning is classified under which type of hazard in disaster management?

A. Slow-onset biological hazard

B. Geophysical hazard

C. Hydro-meteorological hazard

D. Technological hazard

5. Which modern system can best help in minimizing lightning-related casualties in India?

A. Landslide early warning system

B. Doppler radar network for cloud profiling

C. GIS-based flood modeling

D. Carbon credit monitoring

Answers Quiz- 164 (July 20)

1. C

Explanation: The “step leader” of electrons moves in short bursts, following paths of least resistance, which shift due to air density, ion concentration, moisture, and dust particles, creating a zig-zag path.

2. D

Explanation: Lightning generates temperatures up to 30,000°C, which break nitrogen (N₂) and oxygen (O₂) bonds. The atoms combine into nitrates, which then fertilize the soil via rainwater.

3. C

Explanation: The step leader, a negatively charged precursor, forms first and moves downward in a jagged path toward the ground before the return stroke rises up visibly.

4. B

Explanation: Lightning is caused by charge separation, with negative charges at the cloud base and positive charges near the ground or in other cloud regions. It doesn’t require only positive ions.

5. A

Explanation: The return stroke travels from ground to cloud after the step leader reaches the surface, and it is what we see as the bright flash.

Daily Quiz-165

Ravneet Kaur

TNS

Answers Quiz- 164 (July 20)

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Daily Quiz-165

Ravneet Kaur

TNS

Answers Quiz- 164 (July 20)

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