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Daily-mcqs 15 Feb 2025

Current Affairs MCQs for UPSC & State PSC Exams 15 Feb 2025

Current Affairs MCQs for UPSC & State PSC Exams

Q1:

Consider the following statements about the Einstein Ring phenomenon:

1.   It is caused by the gravitational bending of light from a background object by an intervening massive object.

2.   It requires precise alignment of the observer, the gravitational lens, and the background source.

3.   The presence of dark matter has no influence on the formation of an Einstein Ring.

Which of the above statements is/are correct?

A: 1 and 2 only

B: 2 and 3 only

C: 1 and 3 only

D: 1, 2, and 3

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Answer: A

Explanation:

Statement 1 is correct: Einstein rings are formed due to the gravitational lensing effect, where light from a distant object is bent by an intervening massive object, as predicted by Einstein's General Theory of Relativity.

Statement 2 is correct: A nearly perfect alignment between the observer, the lensing mass, and the background source is required to form an Einstein Ring.

Statement 3 is incorrect: Dark matter can influence gravitational lensing and, consequently, affect the formation and intensity of Einstein Rings.

Q2:

Consider the following statements about the Income-tax Bill, 2025:

1.   The Bill will replace the Income-tax Act of 1961 and is expected to come into effect from April 1, 2026.

2.   The new Bill reduces the word count by half and cuts down the number of chapters from 47 to 23.

3.   The Bill introduces a "Tax Year" concept, replacing the old Assessment Year system, aligning it with the financial year.

4.   Cryptocurrencies and other digital assets will be classified as property and subject to capital gains tax.

Which of the above statements is/are correct?

A: 1, 2, and 3 only

B: 2, 3, and 4 only

C: 1, 3, and 4 only

D: 1, 2, 3, and 4

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Answer: D

Explanation:

Statement 1 is correct: The Income-tax Bill, 2025 replaces the Income-tax Act of 1961 and is expected to come into effect from April 1, 2026.

Statement 2 is correct: The Bill reduces the word count by half, cutting the number of chapters from 47 to 23 and simplifying the language.

Statement 3 is correct: The Bill introduces a "Tax Year" concept, aligning it with the financial year, replacing the old Assessment Year system.

Statement 4 is correct: Cryptocurrencies and digital assets are now classified as property and subject to capital gains tax, as outlined in the Bill.

Q3:

Assertion (A): The M23 rebel group, which captured Goma in January 2025, is reportedly supported by Rwanda.

Reason (R): The DRC holds about 40% of the world’s Coltan supply.

Which of the following is the correct explanation?

A: Both assertion and reason are correct, and the reason is the correct explanation of the assertion.

B: Both assertion and reason are correct, but the reason is not the correct explanation of the assertion.

C: The assertion is correct, but the reason is incorrect.

D: The assertion is incorrect, but the reason is correct.

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Answer: B

Explanation:

Assertion (A) is correct: The M23 rebel group, supported by Rwanda, has captured Goma, and competition for Coltan in Goma is a significant factor driving the conflict in eastern DRC.

Reason (R) is correct: The DRC holds around 40% of the world’s Coltan supply, which makes it a valuable resource for armed groups like M23. Thus Both assertion and reason are correct, but the reason is not the correct explanation of the assertion.

Q4:

With reference to Bird Flu, consider the following statements:

1. All avian influenza viruses infect humans.

2. There is one vaccine against H5N1.

Which of the statements given above is/are not correct?

A: Only 1

B: Only 2

C: Both

D: None of the above

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Answer: C

Explanation:

Statement 1 is incorrect because most avian influenza viruses do not infect humans, though certain strains like A(H5N1) and A(H7N9) have caused infections in humans.

Statement 2 is incorrect as there is currently no vaccine specifically for H5N1.

Q5:

What is the potential application of the conductive textile in the medical field?

A: Treatment of skin diseases

B: Treatment of arthritis

C: Treatment of respiratory diseases

D: Treatment of cardiovascular diseases

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Answer: B

Explanation:

The conductive textile has already been tested in wearable knee and elbow bands, showcasing its potential for sustained warmth in extreme weather and therapeutic applications such as arthritis treatment.