With reference to ‘fuel cells’ in which hydrogen-rich fuel and oxygen are used to generate electricity, consider the following statements :
1 If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by-products.
2. Fuel cells can be used for powering buildings and not for small devices like laptop computers.
3. Fuel cells produce electricity in the form of Alternating Current (AC).
Which of the statements given above is/are correct?

With reference to bio-toilets used by the Indian Railways, consider the following statements :
1. The decomposition of human waste in the bio-toilets is initiated by a fungal inoculum.
2. Ammonia and water vapour are the only end products in this decomposition which are released into the atmosphere.
Which of the statements given above is/are correct?

HIN1 virus is sometimes mentioned in the news with reference to which one of the following diseases?

Consider the following countries :
I. China
2. France
3. India
4. Israel
5. Pakistan
Which among the above are Nuclear Weapons States as recognized by the Treaty on the Non-Proliferation of Nuclear Weapons, commonly known as Nuclear Non-Proliferation Treaty (NET)?

Beijing Declaration and Platform for Action’, often seen in the news, is

 Which one of the following was given classical language status recently?