2 and 3 are correct and 1 is incorrect.
The Scramjet engine designed by ISRO uses Hydrogen as fuel and the Oxygen from the atmospheric air as the oxidiser. Thus statement 3 is correct and 1 is incorrect.
India is the fourth country to demonstrate the flight testing of a Scramjet Engine after Russia, USA and China. Thus statement 2 is correct.

• Option B is correct.
• Project NETRA stands for Network for Space Object Tracking and Analysis. It is an initiative of the Indian Space Research Organisation (ISRO). It is an early warning system in space to detect space debris and safeguard India’s functional satellites in low-earth orbits.
• Under NETRA, ISRO plans to put up many observational facilities such as space debris tracking radar with range of 1,500 km (capable of detecting and tracking objects 10 cm and above in size), optical telescopes (effective surveillance and tracking network) and data processing units.

1, 2 and 3 are correct.
●A zoonosis is an infectious disease that jumps from a non-human animal to humans.
●Zoonotic pathogens may be bacterial, viral or parasitic, or may involve unconventional agents and can spread to humans through direct contact or through food, water or the environment. Thus statements 1 and 2 are correct.
●Japanese encephalitis (JE), Kyasanur forest disease (KFD), Nipah virus infection, Ebola virus disease, Middle East respiratory syndrome (MERS) etc. are zoonosis. Thus statement 3 is also correct.

None of the above statements are correct.
●Geospatial data (also known as “spatial data”) is used to describe data about objects, events, or phenomena (manmade or natural) that have a location on the surface of the earth.
●At present, 80% of any data has a geo spatial component.
●Vector Data- It uses geometric shapes to show the location and shape of geographic features. Raster Data: It represents data through a digital image such as a scanned map or photograph. Thus statements are interchanged .

2 is correct and 1 and 3 are incorrect.
●Voice over Internet Protocol (VoIP), is a technology that allows you to make voice calls using a broadband Internet connection instead of a regular (or analog) phone line. It converts sound into a digital signal that travels through the internet. Thus statement 1 is incorrect.
●Some VoIP services may only allow you to call other people using the same service, but others may allow you to call anyone who has a telephone number – including local, long distance, mobile, and international numbers. Thus statement 2 is correct.
●Ip address is traceable as every device connected to the internet has an IP address. Thus statement 3 is incorrect.

(c) is correct.
●The white-space spectrum is a term for bands of frequencies that exist in the general range used for television broadcasting but remain unused. They had become available in some countries for various kinds of mobile devices.
●The lower frequencies of many of these unused signals make them desirable for commercial use, partly because they are better able to penetrate walls and other physical obstacles.

1 and 2 are correct and 3 is incorrect.
●The Indian Human Spaceflight Programme was initiated in 2007 by the Indian Space Research Organisation to develop the technology needed to launch crewed orbital spacecraft into low Earth orbit. Thus statement 1 is correct.
●Under this programme, two unmanned and one manned mission will be sent to LEO.
The first uncrewed flight, named Gaganyaan 1, is scheduled to launch no earlier than mid 2024 on an LVM 3 rocket. Thus statement 2 is correct.
●Gaganyaan project envisages demonstration of human spaceflight capability by launching a crew of 3 members to an orbit of 400 km for a 3 days mission and bring them back safely to earth, by landing in Indian sea waters. Thus statement 3 is incorrect.

1, 2 and 3 all are incorrect.
●Aquaponics is a combination of aquaculture, which is growing fish and other aquatic animals, and hydroponics. Hydroponics is the cultivation of plants without using soil. Thus statement 1 is incorrect.
●Aquaponics combines the risks of both aquaculture and hydroponics, and thus expert assessment and consultation is essential. Thus any layman farmer can’t opt for it. Thus statement 2 is incorrect.
●Aquaponic systems are characterized by a broader range of microflora than conventional hydroponic systems therefore pest and disease management need further improvement. Thus statement 3 is also incorrect

1 is correct only.
RTS,S/ASO1 (RTS.S), trade name Mosquirix, which was endorsed by the World Health Organisation (WHO), is the first and, to date only, vaccine shown to have the capability of significantly reducing malaria, and life-threatening severe malaria, in tests on young African children. Thus only statement 1 is correct.
The vaccine acts against P. falciparum, the most deadly malaria parasite globally, and the most prevalent in Africa. Among children who received 4 doses in large scale clinical trials, the vaccine was able to prevent approximately 4 in 10 cases of malaria over a 4-year period.

2 and 3 are incorrect and 1 is correct.
ISRO’s heaviest rocket (LVM3-M2) successfully placed 36 satellites of OneWeb in orbit.
Earlier it was called Geosynchronous Launch Vehicle Mark III or GSLV-MK3. Thus statement 1 is correct.
It is a 3-stage launch vehicle consisting of Cryogenic Upper Stage, Solid Rocket Boosters and Core Liquid Stage. Thus statement 2 is incorrect. It has a carrying capacity of 8 tonnes to low earth orbit (LEO) and 4 tonnes to geo transfer orbit (GTO). hence statement 3 is incorrect.
The LVM3-M2 mission was the first dedicated commercial satellite mission of New Space India Limited (NSIL).