Improvement in Food Resources — Science STD 9 — Question

Which of the following is not a property of particles of matter:

A stone is thrown upwards as shown in the diagram. When it reaches P, which of the following has the greatest value for the stone?

1. Its Acceleration.
2. Its kinetic energy.
3. Its potential energy.
4. Its weight.

The resultant of balanced forces is:

The rusting of an iron object is called:

1. Corrosion and it is a physical as well as a chemical change.
2. Dissolution and it is a physical change.
3. Corrosion and it is a chemical change.
4. Dissolution and it is a chemical change.

The inertia of an object tends to cause an object:

1. To increase its speed.
2. To decrease its speed.
3. To resist a change in its state of motion.
4. To decelerate due to friction.

Milk of Magnesia is:

1. A colloid.
2. A true solution.
3. A homogeneous mixture.
4. A suspension.

A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is,

Ultrasound is of frequency:

When a body is in translatory equilibrium:

According to Rutherford's atomic theory, the path an electron takes while revolving around the nucleus will be: