Consider the following aircraft:

1. Rafale
2. MiG-29
3. Tejas MK-1

How many of the above are considered fifth generation fighter aircraft?

In which of the following are hydrogels used ?

1. Controlled drug delivery in patients
2. Mobile air-conditioning systems
3. Preparation of industrial lubricants

Select the correct answer using the code given below:

Consider the following statements:

Statement-I: Giant stars live much longer than dwarf stars. Statement-II: Compared to dwarf stars, giant stars have a greater rate of nuclear reactions.

Which one of the following is correct in respect of the above statements?

Consider the following activities:

1. Identification of narcotics on passengers at airports or in aircraft
2. Monitoring of precipitation
3. Tracking the migration of animals

In how many of the above activities can the radars be used?

Which one of the following is synthesised in human body that dilates blood vessels and increases blood flow ?

Recently, the term "pumped-storage hydropower" is actually and appropriately discussed in the context of which one of the following?