Questions

The Parliament cannot amend those provisions which form the ‘basic structure’ of the Constitution. This was ruled by the Supreme Court in the Kesavan and a Bharati Case. (1973)

Basic Structure of the Indian Constitution is not defined. But according to SC, the basic structure can be evolved but cannot be destroyed. Hence it falls within the constituent powers of the Parliament. Hence both 1 and 3 are correct.

Argon gas is used in fluorescent and incandescent light bulbs to stop the oxygen in the light bulbs from corroding the hot tungsten filament.

The use of argon in light bulbs prevents the evaporation of the tungsten filaments, which results in increased light bulb life.

Argon is also used to create an inert atmosphere for growing semiconductor crystals, arc welding and for processes that need protection from other kinds of atmospheric gases.

Gagan Narang was a famous Indian shooter who was first qualified to London Olympics. He was conferred with Arjuna Award for shooting. 

World Wetlands Day is celebrated every year on 2nd February. This year’s World Wetlands Day under the theme of "Wetlands and Climate Change".