CHEMISTRY CH10 Matter Around Us — Science STD 9 — Question

For current to flow, one needs art open circuit.

Fleming’s left-hand rule is also known as the dynamo rule.

Say true or false. If false, correct the statement.

Ongole is an exotic breed of cattle.

• True

• False

A generator converts mechanical energy into electrical energy.

Aestivation is an adaptation to overcome the cold condition.

• True

• False

If the volume of object is above the water surface, then the object is less densed.

State whether true or false. If false, correct the statement.

The anode in electrolyte is negative.

• True

• False

The pole of a freely suspended magnet which points towards the north is called the south pole and what points towards south is celled north pole.

The critical angle is defined as the angle of incidence at which the total internal reflection starts to occur.

State whether true or false. If false, correct the statement.

Non- infectious diseases remain confined to the person who develops the disease and do not spread to others.

• True

• False