Structure of the Atom — Science STD 9 — Question

On converting 308K, 329K and 391K to Celsius scale, the correct sequence of temperatures will be:

1. 33°C, 56°C and 118°C
2. 35°C, 56°C and 119°C
3. 35°C, 56°C and 118°C
4. 56°C, 119°C and 35°C

On the basis of composition of matter, milk is considered to be:

1. A pure substance.
2. An impure substance.
3. An element.
4. A compound.

Which of the following is not a property of a molecule?

What kind of force acting on an object brings it in motion?

The law of gravitation gives the gravitational force between:

1. The earth and a point mass only.
2. The earth and the sun only.
3. Any two bodies having some mass.
4. Any two charged bodies only.

A mixture of chloroform and water taken in a separating funnel is mixed and left undisturbed for some time.The upper layer in the separating funnel will be:

Earth goes round the SUN with:

Identify which of the following wave parameter is related to the volume of a sound?

Light waves: