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UPSC 2027 GS1 Quiz: ENSO, El Niño, La Niña, IOD and Indian Monsoon | ENSO, एल नीनो, ला नीना, IOD और भारतीय मानसून

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Sample Questions from UPSC 2027 GS1 Quiz: ENSO, El Niño, La Niña, IOD and Indian Monsoon | ENSO, एल नीनो, ला नीना, IOD और भारतीय मानसून

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Q1. Consider the following statements regarding ENSO: 1. ENSO is a coupled ocean-atmosphere phenomenon centred in the tropical Pacific Ocean. 2. El Niño represents the warm phase of ENSO. 3. La Niña represents the cool phase of ENSO. 4. ENSO is confined only to changes in sea-surface temperature and has no atmospheric component. Which of the statements given above are correct?

ENSO के संबंध में निम्नलिखित कथनों पर विचार कीजिए: 1. ENSO tropical Pacific Ocean में centred coupled ocean-atmosphere phenomenon है। 2. El Niño ENSO के warm phase को दर्शाता है। 3. La Niña ENSO के cool phase को दर्शाता है। 4. ENSO केवल sea-surface temperature changes तक सीमित है और इसका कोई atmospheric component नहीं है। उपर्युक्त कथनों 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

Q2. With reference to normal conditions over the equatorial Pacific, consider the following statements: 1. Easterly trade winds generally push warm surface water toward the western Pacific. 2. Upwelling of colder nutrient-rich water commonly occurs near the eastern Pacific off western South America. 3. The western tropical Pacific is generally cooler than the eastern tropical Pacific under normal conditions. Which of the statements given above are correct?

Equatorial Pacific की normal conditions के संदर्भ में निम्नलिखित कथनों पर विचार कीजिए: 1. Easterly trade winds सामान्यतः warm surface water को western Pacific की ओर push करती हैं। 2. Colder nutrient-rich water का upwelling eastern Pacific में western South America के निकट commonly होता है। 3. Normal conditions में western tropical Pacific सामान्यतः eastern tropical Pacific से cooler होता है। उपर्युक्त कथनों में से कौन-से सही हैं?

A. 1 only
केवल 1
B. 1 and 2 only
केवल 1 और 2
C. 2 and 3 only
केवल 2 और 3
D. 1, 2 and 3
1, 2 और 3

Q3. Which one of the following best describes Walker Circulation?

निम्नलिखित में से कौन Walker Circulation का सबसे सही वर्णन करता है?

A. An east-west atmospheric circulation over the tropical Pacific linked with differential heating and convection
Tropical Pacific पर east-west atmospheric circulation जो differential heating और convection से जुड़ी है
B. A north-south ocean current confined to the Indian Ocean
Indian Ocean तक सीमित north-south ocean current
C. A polar circulation associated only with Western Disturbances
केवल Western Disturbances से जुड़ी polar circulation
D. A permanent upper-atmospheric circulation over the Arctic Ocean
Arctic Ocean के ऊपर permanent upper-atmospheric circulation

Q4. Assertion (A): El Niño does not invariably lead to drought over India. Reason (R): The Indian monsoon is influenced by several interacting factors such as IOD, MJO, monsoon depressions, land-ocean thermal contrast and other circulation features. Which one of the following is correct?

अभिकथन (A): El Niño हमेशा India में drought उत्पन्न नहीं करता। कारण (R): Indian monsoon IOD, MJO, monsoon depressions, land-ocean thermal contrast और अन्य circulation features जैसे कई interacting factors से प्रभावित होता है। निम्नलिखित में से कौन-सा सही है?

A. Both A and R are true, and R is the correct explanation of A
A और R दोनों सही हैं तथा R, A की सही व्याख्या है
B. Both A and R are true, but R is not the correct explanation of A
A और R दोनों सही हैं, लेकिन R, A की सही व्याख्या नहीं है
C. A is true, but R is false
A सही है, लेकिन R गलत है
D. A is false, but R is true
A गलत है, लेकिन R सही है

Q5. Consider the following statements regarding a positive Indian Ocean Dipole (IOD): 1. The western equatorial Indian Ocean becomes relatively warmer than the eastern equatorial Indian Ocean. 2. The eastern Indian Ocean near Indonesia may become relatively cooler. 3. Positive IOD necessarily means the entire Indian Ocean is warmer than normal. Which of the statements given above are correct?

Positive Indian Ocean Dipole (IOD) के संबंध में निम्नलिखित कथनों पर विचार कीजिए: 1. Western equatorial Indian Ocean eastern equatorial Indian Ocean की तुलना में relatively warmer हो जाता है। 2. Indonesia के निकट eastern Indian Ocean relatively cooler हो सकता है। 3. Positive IOD का अर्थ आवश्यक रूप से entire Indian Ocean का warmer than normal होना है। उपर्युक्त कथनों में से कौन-से सही हैं?

A. 1 only
केवल 1
B. 1 and 2 only
केवल 1 और 2
C. 2 and 3 only
केवल 2 और 3
D. 1, 2 and 3
1, 2 और 3

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