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Daily-mcqs 28 Aug 2025

Current Affairs MCQs for UPSC & State PSC Exams 28 Aug 2025

Current Affairs MCQs for UPSC & State PSC Exams

Q1:

Consider the following statements regarding Brown Dwarfs:

1.    They are also called “failed stars” as they cannot sustain hydrogen fusion.

2.    Their mass is always less than that of the Sun.

3.    They form from collapsing clouds of gas and dust, like stars.

Which of the above statements is/are correct?

A: 1 and 3 only

B: 2 and 3 only

C: 1 and 2 only

D: 1, 2 and 3

Show

Answer: D

Explanation:

Statement 1 is correct – Brown dwarfs do not have enough mass to sustain hydrogen fusion, hence termed “failed stars.”

Statement 2 is correct – Their mass is much less than the Sun’s, typically up to 70 times that of Jupiter, which is far less than solar mass.

Statement 3 is correct – They form like stars, from the collapse of gas and dust.

Q2:

Which of the following statements regarding Red Dwarf stars is/are true?

1.    They are the most massive and brightest stars.

2.    They burn their nuclear fuel slowly and can live for trillions of years.

3.    Proxima Centauri is a red dwarf star.

Select the correct answer using the code below:

A: 1 and 2 only

B: 2 and 3 only

C: 1 and 3 only

D: 1, 2 and 3

Show

Answer: B

Explanation:

· Statement 1 is incorrect – Red dwarfs are the smallest and least luminous stars.

· Statement 2 is correct – Their low mass allows them to burn fuel slowly, lasting trillions of years.

· Statement 3 is correct – Proxima Centauri, the closest star to Earth after the Sun, is a red dwarf.

Q3:

Which of the following statements is/are correct about the Gaganyaan mission?

1.    It will carry a 3-member crew to a 400 km orbit for a 7-day mission.

2.    The Launch Vehicle used will be the LVM-3, formerly known as GSLV Mk-III.

3.    The Crew Module and Service Module together form the Orbital Module.

Select the correct code:

A: 1 and 2 only

B: 2 and 3 only

C: 3 only

D: 1, 2 and 3

Show

Answer: B

Explanation:

· Statement 1 is incorrect – The mission is planned for 3 days, not 7.

· Statement 2 is correct – LVM-3, previously called GSLV Mk-III, is the launch vehicle.

· Statement 3 is correct – The Orbital Module includes both the Crew Module and Service Module.

Q4:

Which of the following statements about the New World screwworm is/are correct?

1.    It lays eggs only in decaying carcasses.

2.    It is native to South America and the Caribbean.

3.    The infestation can be fatal if left untreated.

Select the correct code:

A: 1 and 2 only

B: 2 only

C: 2 and 3 only

D: 1, 2 and 3

Show

Answer: C

Explanation:

· Statement 1 is incorrect – The female screwworm lays eggs in open wounds or natural body openings, not only in decaying carcasses.

· Statement 2 is correct – It is native to South America and the Caribbean.

· Statement 3 is correct – The infestation can spread to vital organs and cause sepsis or death.

Q5:

Which of the following statements is/are correct regarding INS Udaygiri and INS Himgiri, commissioned in August 2025?

1.    Both belong to the Shivalik-class of frigates.

2.    They were built by the same shipyard.

3.    They feature BrahMos supersonic cruise missiles and Barak 8 surface-to-air missiles.

Select the correct answer using the code below:

A: 3 only

B: 2 only

C: 1 only

D: 1, 2 and 3

Show

Answer: A

Explanation:

· Statement 1 is incorrect – They belong to the Nilgiri-class, not Shivalik-class, though they are successors of Shivalik-class.

· Statement 2 is incorrect – INS Udaygiri was built by MDL, while INS Himgiri was built by GRSE.

· Statement 3 is correct – Both are equipped with BrahMos cruise missiles and Barak 8 SAMs.