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UPSC 2027 GS1 Quiz: ENSO, IOD, MJO and Indian Monsoon | ENSO, IOD, MJO एवं भारतीय मानसून

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Sample Questions from UPSC 2027 GS1 Quiz: ENSO, IOD, MJO and Indian Monsoon | ENSO, IOD, MJO एवं भारतीय मानसून

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Q1. Consider the following statements regarding ENSO: 1. It is a coupled ocean-atmosphere phenomenon centred mainly in the tropical Pacific Ocean. 2. El Niño, La Niña and neutral conditions represent its broad phases. 3. ENSO is determined only by sea-surface temperature and has no atmospheric component. 4. Changes in tropical Pacific winds and convection form an important part of ENSO dynamics. Which of the statements given above are correct?

ENSO के संबंध में निम्नलिखित कथनों पर विचार कीजिए: 1. यह मुख्यतः tropical Pacific Ocean में केंद्रित coupled ocean-atmosphere phenomenon है। 2. El Niño, La Niña और neutral conditions इसके broad phases हैं। 3. ENSO केवल sea-surface temperature से निर्धारित होता है और इसका कोई atmospheric component नहीं है। 4. Tropical Pacific winds और convection में changes ENSO dynamics का महत्वपूर्ण भाग हैं। उपर्युक्त में से कौन-से कथन सही हैं?

A. 1 and 2 only
केवल 1 और 2

B. 1, 2 and 4 only
केवल 1, 2 और 4

C. 2, 3 and 4 only
केवल 2, 3 और 4

D. 1, 2, 3 and 4
1, 2, 3 और 4

Q2. Under normal equatorial Pacific conditions, which of the following generally occurs?

Normal equatorial Pacific conditions में निम्नलिखित में से क्या सामान्यतः होता है?

A. Warm surface waters accumulate in the eastern Pacific near South America.
Warm surface waters eastern Pacific में South America के पास accumulate करती हैं।

B. Easterly trade winds push warm surface water toward the western Pacific.
Easterly trade winds warm surface water को western Pacific की ओर push करती हैं।

C. Upwelling is strongest in the western Pacific warm pool.
Upwelling western Pacific warm pool में सबसे strong होती है।

D. Convection is generally strongest over the cold eastern Pacific.
Convection generally cold eastern Pacific के ऊपर strongest होती है।

Q3. Walker Circulation is best described as:

Walker Circulation का सर्वोत्तम वर्णन क्या है?

A. A north-south circulation over the Indian Ocean only
केवल Indian Ocean के ऊपर north-south circulation

B. An east-west atmospheric circulation over the tropical Pacific linked with differences in convection and pressure
Tropical Pacific के ऊपर convection और pressure differences से linked east-west atmospheric circulation

C. A deep ocean current moving from the Arctic to the Indian Ocean
Arctic से Indian Ocean की ओर जाने वाली deep ocean current

D. A seasonal wind confined to the Himalayas
Himalayas तक confined seasonal wind

Q4. Consider the following changes commonly associated with El Niño: 1. Weakening of easterly trade winds 2. Eastward movement of warm surface water 3. Weakening of upwelling near western South America 4. Strengthening of the normal east-west Pacific temperature gradient Which of the above are correct?

El Niño से सामान्यतः जुड़े निम्नलिखित changes पर विचार कीजिए: 1. Easterly trade winds का weakening 2. Warm surface water का eastward movement 3. Western South America के पास upwelling का weakening 4. Normal east-west Pacific temperature gradient का strengthening उपर्युक्त में से कौन-से सही हैं?

A. 1 and 2 only
केवल 1 और 2

B. 1, 2 and 3 only
केवल 1, 2 और 3

C. 2, 3 and 4 only
केवल 2, 3 और 4

D. 1, 2, 3 and 4
1, 2, 3 और 4

Q5. Which one of the following is most characteristic of La Niña?

निम्नलिखित में से कौन-सा La Niña की सबसे characteristic feature है?

A. Abnormal warming of the eastern equatorial Pacific and weakened trade winds
Eastern equatorial Pacific की abnormal warming और weakened trade winds

B. Cooling of central/eastern equatorial Pacific and strengthening of the normal east-west gradient
Central/eastern equatorial Pacific की cooling और normal east-west gradient का strengthening

C. Complete disappearance of Pacific upwelling
Pacific upwelling का complete disappearance

D. Permanent reversal of Walker Circulation
Walker Circulation का permanent reversal