A metal piece of mass 5 g has thermal capacity 2.5 J K⁻¹. If the mass of the metal is tripled, then its specific heat capacity will be :

1. 7.5 J K⁻¹
2. 2.5 J K⁻¹
3. 1.5 J g⁻¹ K⁻¹
4. 0.5 J g⁻¹ K⁻¹

Assertion (A) : As the level of water in a tall measuring cylinder kept under running tap rises, the pitch of sound gradually increases.

Reason (R) : Frequency of sound is inversely proportional to the length of the water column.

1. Both (A) and (R) are true and (R) is correct explanation of (A).
2. Both (A) and (R) are true and (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.

A radioactive element P emits one α-particle and transforms to a new element Q. What will be the position of the element Q in the periodic table?

1. One group to the left of P
2. One group to the right of P
3. Two groups to the right of P
4. Two groups to the left of P

Each of the substances given below is supplied with same amount of heat. Which one will attain the highest temperature?

1. Aluminium
2. Copper
3. Iron
4. Lead