Why is Naphthalene Diimide (NDI) important for next-gen electronics? 1. Its molecular arrangement can be tuned by temperature. 2. Changes in its nanoscale structure can alter optical and electrical properties. 3. It enables adaptive electronic devices.

Which of the following statements regarding ethanol as a transport fuel are correct? 1. Ethanol has a higher octane rating than petrol. 2. Ethanol contains less energy per litre than petrol. 3. Ethanol can be produced only from sugar-rich crops.

Which are correct for India's Ethanol Blended Petrol Programme? 1. It aims to reduce dependence on imported crude oil. 2. It promotes the use of domestically produced biofuels. 3. It mandates the replacement of all petrol vehicles with flex-fuel vehicles.

Which are true for Flex-Fuel Vehicles (FFVs)? 1. FFVs can operate on fuel blends ranging from E20 to E100. 2. FFVs require modifications in fuel system components to handle high ethanol concentrations. 3. The use of FFVs eliminates the need for petrol.

Which are correct regarding Gamma-Ray Bursts (GRBs)? 1. They are among the most energetic events in the Universe. 2. They are associated with supernovae and neutron star mergers. 3. They originate from planets in the Solar System.

Which of the following can be achieved through in-orbit servicing? 1. Refuelling satellites. 2. Relocating satellites to a different orbit. 3. Upgrading or replacing onboard components. 4. Correcting orbital debris by deorbiting inactive satellites.

Which of the statements given below are correct? 1. Every satellite in Low Earth Orbit eventually experiences orbital decay. 2. Orbital decay occurs mainly due to Earth's gravitational pull. 3. Increased solar activity can accelerate orbital decay.

With reference to the James Webb Space Telescope (JWST), which statements are correct? 1. JWST primarily observes the Universe in the infrared. 2. It can detect stars hidden behind dense dust clouds. 3.It is positioned in Low Earth Orbit.

Why are infrared observations preferred for studying dusty galaxies? 1. Infrared radiation penetrates dust more effectively than visible light. 2. Infrared wavelengths are scattered less by dust. 3. Infrared telescopes can observe only nearby galaxies.

Which statements regarding starburst galaxies are correct? 1. They form stars at a much higher rate than normal galaxies. 2. The Cigar Galaxy (M82) is a well-known starburst galaxy. 3. Starburst activity continues throughout a galaxy's lifetime.

With reference to Vikram-1, consider the following statements: 1. It is India's first privately developed orbital rocket. 2. It is designed to place satellites in Low Earth Orbit. 3. It is developed by ISRO. Which of the statements above are correct?

Consider the following statements: 1. A suborbital rocket reaches space but does not orbit Earth. 2. An orbital rocket must attain sufficient velocity to remain in orbit. 3. Every orbital mission is also a suborbital mission. Which statements are correct?