Day-20 | Daily MCQs | UPSC Prelims | SCIENCE AND TECHNOLOGY

The Radioactive pollution may result from:

1. Medical waste
2. Coal ash
3. Production of nuclear arsenal
4. Mining of Uranium
5. Decommissioning of nuclear weapons

Correct code is:

‘Hydrogen economy’ refers to:

1. A catalytic process that convert non-food biomass into extremely pure

hydrogen.

2. Procedure that provide material for use in fuel cells.
3. Providing material useful in producing clean energy.
4. Production of hydrogen gas in a cheaper way.

The correct statements are:

A body weighs slightly more at the poles than at the equator because:

Consider the following Metals:

1. Platinum
2. Gold
3. Copper
4. Lead

Their correct arrangement in the increasing order of density is:

Artificial satellite are used for

1. TV transmission
2. Detecting minerals
3. Space research

Which of the above is/are correct?