Daily Quiz-291

Manufacturing rain

Ravneet Kaur

Tribune News Service

Chandigarh, Updated At : 07:20 PM Nov 26, 2025 IST

Artificial rain enhancement, Cloud seeding can be done by plane.

Q1. Which of the following atmospheric conditions favors effective cloud seeding?

A. Relative humidity > 60% and updrafts

B. Relative humidity < 20%

C. Very high wind speed

D. Absence of aerosols

Q2. Which of the following statements about cloud seeding in India is correct?

A. It is legally regulated under the Environment (Protection) Act, 1986

B. It requires no central clearance

C. It is banned by CPCB

D. It can only be carried out by ISRO

Q3. Which is the most direct application of cloud seeding for sustainable development?

A. Preventing urban heat islands

B. Ensuring water availability for agriculture

C. Increasing solar radiation

D. Reducing sea-level rise

Q4. Which of the following technologies has been recently integrated with cloud seeding in the UAE?

A. Nanotechnology

B. Drone-based ionization

C. Satellite remote seeding

D. Quantum radar

Q5. The success rate of cloud seeding operations globally is estimated around:

A. 10-20%

B. 30-40%

C. 50-70%

D. 90%

Answers Quiz- 290 (November 25)

1. A

Explanation: Vincent Schaefer conducted the first cloud seeding experiment in 1946 using dry ice.

2. B

Explanation: The Environmental Modification (ENMOD) Convention bans hostile use of environmental modification, including weather alteration for warfare.

3. A

Explanation: IITM, Pune conducts advanced research and simulations on artificial rain enhancement.

4. C

Explanation: Cloud seeding can’t influence large-scale systems like cyclones; it works only on local weather.

5. B

Explanation: Some areas may benefit while others are deprived, leading to moral and geopolitical disputes.

Daily Quiz-291

Manufacturing rain

Ravneet Kaur

Tribune News Service

Answers Quiz- 290 (November 25)

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