Saturday, 3 October 2026

With reference to Indian launch vehicles, consider the following statements:

1. 1.SSLV is designed primarily for small satellites and uses three solid stages.
2. 2.GSLV uses a cryogenic upper stage in its Mk II configuration.
3. 3.SSLV is designed to place heavy geostationary communication satellites directly into geostationary orbit.

Which of the statements given above are correct?

With reference to India's response to Left-Wing Extremism (LWE), consider the following statements:

1. 1.Police and public order are State subjects.
2. 2.The Union Government can assist States through Central Armed Police Forces and financial and infrastructure support.
3. 3.The Union Government alone has constitutional responsibility for ordinary policing in LWE-affected districts.

Which of the statements given above are correct?

In semiconductor fabrication, doping silicon primarily means:

Consider the following statements:

1. 1.SSLV is intended for rapid, relatively flexible launch of small spacecraft.
2. 2.GSLV Mk II uses a cryogenic upper stage.
3. 3.LVM3 is identical in configuration and payload class to SSLV.

Which of the statements given above are correct?

Match the following cyber terms with their characteristic:

1. 1.Phishing — deceptive communication intended to obtain information or induce an action
2. 2.DDoS — overwhelming a service with traffic or requests from multiple sources
3. 3.Supply-chain attack — compromise through a trusted vendor, component or dependency
4. 4.Zero-day exploitation — exploitation of a vulnerability for which defenders may have had little or no prior patching window

How many pairs are correctly matched?

Consider the following statements about a spacecraft travelling beyond Earth's immediate orbital environment:

1. 1.Gravity-assist manoeuvres can alter a spacecraft's heliocentric trajectory without requiring all of the velocity change to be supplied by onboard propellant.
2. 2.A gravity assist necessarily increases the spacecraft's speed relative to the Sun.
3. 3.Planetary flybys can change the direction as well as magnitude of velocity in a chosen reference frame.

Which one of the following correctly describes extreme ultraviolet lithography (EUV) in advanced semiconductor manufacturing?

Consider the following pairs:

1. 1.SpaDeX — in-orbit rendezvous and docking technology
2. 2.NISAR — dual-frequency SAR Earth observation
3. 3.POEM — use of an orbital platform for in-space experiments
4. 4.SSLV — primary vehicle for crewed lunar landing missions

How many pairs are correctly matched?

Consider the following statements about radar cross-section reduction:

1. 1.Shaping can redirect incident electromagnetic energy away from the radar receiver.
2. 2.Radar-absorbing materials can reduce reflected electromagnetic energy at relevant frequencies.
3. 3.Stealth means that an object becomes physically invisible to every sensor.

Which of the statements given above are correct?

A smart border system detects movement through a combination of ground sensors, thermal cameras and unmanned aerial surveillance, while a command centre assigns patrols based on fused alerts. What is the main advantage over a single-sensor system?