Which one of the following metal is used with iron to make it rust free?

Which among the following can cause Encephalitis?

1.Bacteria

2.Virus

3.Fungi

Choose the correct option from the codes given below:

When was the Space Commission established in India?

Why does the color of tomatoes turn red when ripe?

Radio waves are reflected from which part of the atmosphere-

When the snowflake melts, the result will be-

The rotations per second of a wheel that spins at an accelerating rate are measured by

Due to the increase in the amount of carbon dioxide in the atmosphere-