Consider the following irrigation projects with respective rivers:

1. Gosikhurd National Irrigation Project - Krishna
2. Shahpur Kandi Project - Ravi
3. Ukai irrigation Project - Tapti

Which of the above is/are correctly matched? 

In the ancient Buddhist texts, who among the following is believed to be described as Nigantha Nataputta?

Consider the following:

1. X-rays
2. Infra-red rays
3. Radio waves
4. Gamma rays
5. Microwaves

Which among the following is the correct order of their increasing wavelength?

The term TRAPPIST-1, which was frequently in news, is a newly discovered:

They are similar to small snowballs of frozen gases, rock and dust that orbit the Sun in our solar system. When they pass close to the Sun, they release gases. When they are frozen, they form a size of a small town. Which of the following astronomical objects has been described above?