1. Consider the following statements about “dark stars”:

1. They existed in the early universe and were powered by dark matter annihilation.
2. They were smaller than the Sun but extremely hot due to fusion in their cores.
3. Some dark stars could shine as brightly as entire early galaxies.

Which of the statements given above are correct?

• 1 and 2 only
• 1 and 3 only
• 2 and 3 only
• 1, 2 and 3

2. Which of the following statements are true regarding compressive asphyxia?

1. It occurs when external pressure prevents the chest from expanding and breathing.
2. High crowd densities above 6–7 persons per square metre can increase its risk.
3. It is a type of perinatal asphyxia affecting newborns.

Select the correct answer using the code given below:

• 1 and 2 only
• 1 and 3 only
• 2 and 3 only
• 1, 2 and 3

3. Which of the following features correctly describe India’s Dhvani hypersonic missile?

1. Can achieve speeds greater than Mach 5 (~7,400 km/h).
2. Uses nuclear fusion in its propulsion system.
3. Has stealth features and a blended wing-body design.

Select the correct answer using the code given below:

• 1 and 2 only
• 1 and 3 only
• 2 and 3 only
• 1, 2 and 3

4. Cyclone Shakhti, formed in October 2025, developed over which of the following regions?

• Bay of Bengal
• Laccadive Sea
• Gulf of Mannar
• Northeast Arabian Sea

5. Consider the following statements regarding snow leopards:

1. They are native only to India and China.
2. They are classified as Vulnerable (VU) by IUCN.
3. They inhabit high-altitude cold deserts and rocky slopes above 3,000 m.

Which of the statements given above are correct?

• 1 and 2 only
• 1 and 3 only
• 2 and 3 only
• 1, 2 and 3