Science Quiz 4

1. Bluetooth device 
2. Cordless phone 
3. Microwave oven 
4. Wi – Fi device 

Which of the above can operate between 2.4 and 2.5 GHz range of radio frequency band?

1. Smart Card is a plastic card with an embedded microchip. 
2. Digital technology is primarily used with new physical communication medium such as satellite and fibre optics transmission.
3. A digital library is a collection of documents in an organised electronic form available on the Internet only. 

Which of the statements given above is/are correct?

1. RTGs are miniature fission reactors.
2. RTGs are used for powering the onboard systems of spacecrafts.
3. RTGs can use Plutonium-238, which is a by-product of weapons developments.

Which of the statements given above are correct? [2024]

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? [2024]

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

How many of the above are considered fifth-generation fighter aircraft? [2024]