Is Matter Around Us Pure ? — Science STD 9 — Question

Write the approximate weight of a body of mass 5kg:

Which of the following is not a draught animal?

1. Camel
2. Elephant
3. Sheep
4. Horse

Goldstein’s experiments which involved passing high voltage electricity through gases at very low pressure resulted in the discovery of:

1. Electron.
2. Proton.
3. Nucleus.
4. Neutron.

Value representing the number of protons in an element:

Echinoderms have:

1. Water vascular system.
2. Canal system.
3. Jet propulsion.
4. Book lungs.

Work done upon a body is:

The vibrations or the pressure variations inside the inner ear are converted into electrical signals by the_________.

If 32g of sulphur has x atoms, then the number of atoms in 32g of oxygen will be:

Preventive and control measures adopted for storage of grains include.

1. Strict cleaning.
2. Proper disjoining.
3. Fumigation.
4. All the above.

What is the technique used to separate components of ink: