1. With reference to the India AI Stack, consider the following statements:

1. It is designed to enable population-scale deployment of AI applications.
2. It consists of four layers: Application, Model, Compute and Data.
3. It is anchored in the principle of “AI for Humanity”.

Which of the statements given above is/are correct?

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

2. The Eastern Nagaland Peoples’ Organisation (ENPO) is:

• A political party of Nagaland
• A militant organisation
• An apex body representing eight Naga tribes
• A statutory body under the Sixth Schedule

3. With reference to the International Space Station (ISS), consider the following statements:

1. It orbits Earth at an altitude of about 400 km.
2. It has been continuously inhabited since 1998.
3. It is scheduled for controlled de-orbit in 2030.

Which of the statements given above is/are correct?

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

4. Sodium-ion batteries differ from lithium-ion batteries in that:

• They use copper current collectors on both electrodes
• They rely on scarce critical minerals
• They can be stored and transported at 0% state of charge
• They have higher energy density than lithium-ion batteries

5. The expiry of the New START Treaty is significant because:

• It ends the Non-Proliferation Treaty
• It removes all legal limits on US–Russia strategic nuclear weapons
• It bans hypersonic weapons globally
• It brings China under nuclear arms control