Consider the following statements regarding electric fuse wire
1.It has low melting point
2.It has very high specific resistance
3.it is connected in parallel with the electric circuit
Which of the statements given above is/are correct?

According to the law of conservation of energy
1.energy can be created but not destroyed
2.energy can neither be created or destroyed
3.energy can be transformed from one form to the other

Consider the following metals
1.Uranium
2.Radium
3.Plutonium
Which of these are used in making nuclear weapons?

Match List I (Device) with List II (Conversion) and select the correct answer from the codes given below the lists.

Which of the following is/are examples of electromagnetic waves?
1.X-rays
2.Ultrasonics
3.β-rays
4.α-rays

Match List I (Discovery) with List II (Scientists) and select the correct answer from the codes given below the lists.

Match List I (Names) with List I (Contribution) and select the correct answer from the codes given below the lights. 

The following are some great discoveries in
1.X-rays
2.Theory of relativity
3.Super conductivity
4.Raman effect
The chronological order in which they were discovered is

To achieve high value of rocket velocity, one must have

In a refrigerator, cooling is produced by