Improvement in Food Resources — Science STD 9 — Question

How is scrap-iron separated from other wastes in a scrap yard:

You have to push with 15N of force to move it 10 meters. How much work do you do?

Lysosomes are made up of:

A body is brought from the earth to the moon is ___?

Contractile vacuoles take part in:

1. Absorption of water from outside.
2. Osmoregulation.
3. Excretion.
4. Both b and c.

When we change a feeble sound to a loud sound, we increase its:

42. A bus moving along a straight line at 20m/s undergoes an acceleration of 4m/s². After 2 seconds, its speed will be:

The commercial unit of energy is:

1. Watt.
2. Watt-hour.
3. Kilowatt-hour.
4. Kilowatt.

A particle is moving in positive x-direction with initial velocity of 10m/ s and uniform retardation such that it reaches the initial position after 10s. he distance traversed by the particle in 6s is:

Meristematic tissues in plants are: