Force and Laws of Motion — Science STD 9 — Question

During summer, water kept in an earthen pot becomes cool because of the phenomenon of:

3.42g of sucrose are dissolved in 18g of water in a beaker. The numbers of oxygen atoms in the solution are:

The subatomic particle called electron was discovered by:

1. J.J. Thomson
2. Neils Bohr
3. James Chadwick
4. D. E. Goldstein

A car travels 10m in 5 seconds, 20m in next 10 seconds and 30m in the last 10 seconds. The average speed of the motion is:

Herdmania is a:

1. Urochordate.
2. Cephalochordate.
3. Hemichordate.
4. Craniate.

Direction of motion of a body is given by:

What will cause an object to move?

The atomic theory of matter was proposed by:

In a free fall the velocity of a stone is increasing equally ion equal intervals of time under the effect of gravitational force of the earth. Then what can you say about the motion of this stone? Whether the stone is having:

The boiling point of diethylether, acetone and n-butyl alcohol are 35°C, 56°C and 118°C respectively. Which one of the following represents their boiling points in kelvin scale?