Daily Quiz- 154

It's raining questions!

TNS

Chandigarh, Updated At : 03:56 PM Jul 10, 2025 IST

1. The Southern Oscillation Index (SOI) is calculated based on pressure differences between:

A) Tahiti and Mumbai

B) Peru and Indonesia

C) Tahiti and Darwin

D) Galápagos and Papua New Guinea

2. Which of the following best describes “breaks in monsoon”?

A) Temporary intensification of rainfall

B) Periods of complete dryness due to cold fronts

C) Intervals of no rainfall within the rainy season due to northward shift of monsoon trough

D) Permanent cessation of monsoon after September

3. Which of these is not a reason for the variation in monsoon rainfall across India?

A) Orientation of mountain ranges

B) Distance from the coast

C) Soil type of the region

D) Influence of regional cyclonic systems

4. Which statement about the Tropical Easterly Jet (TEJ) is correct?

A) It originates in the mid-latitudes and flows west to east

B) It weakens before monsoon onset

C) It flows over the equator during winter

D) It strengthens after monsoon onset and flows east to west over the Indian Peninsula

5. What historical role did Hippalus play in monsoon navigation?

A) Built the first Indian rain gauge

B) Founded Alexandria’s meteorological observatory

C) Discovered the southwest monsoon wind pattern for maritime trade

D) Calculated the seasonal wind pressure variation formula

Answers Quiz-153 (July 9)

1. C

Explanation: During summer, the ITCZ shifts north near the Tropic of Cancer, pulling in southeast trade winds which deflect due to the Coriolis effect and become the southwest monsoon winds over India.

2. C

Explanation: The Somali Jet is a low-level jet stream over the Arabian Sea that channels moisture-laden winds into western India, aiding monsoon onset.

3. C

Explanation: The northward shift of the subtropical westerly jet and establishment of the Tropical Easterly Jet over India facilitate monsoon onset.

4. C

Explanation: Tamil Nadu lies in the rain-shadow of the Western Ghats and receives most of its rain from the northeast monsoon (October–December), but also gets some during the southwest monsoon.

5. C

Explanation: El Niño warms the Pacific Ocean and alters global circulation patterns, leading to reduced convection over the Indian Ocean and weaker monsoon rainfall in India.

Daily Quiz- 154

Ravneet Kaur

TNS

Answers Quiz-153 (July 9)

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Daily Quiz- 154

Ravneet Kaur

TNS

Answers Quiz-153 (July 9)

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