PHYSICS CH9 Universe — Science STD 9 — Question

When the leaves of Mimosa pudica plant are touched with the finger, they fold up quickly.

The barometer works by balancing the Mercury in the glass tube along with the outside air pressure.

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

Electrically neutral means it is either zero or equal positive and negative charges.

• True

• False

Motion & rest are relative terms.

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

Apis florea is a rock bee.

• True

• False

The pressure of gases does not depend on the temperature of the gas and the volume it occupies

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

Current can produce magnetic field.

• True

• False

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

Skin of reptilians are smooth and moist.

• True

• False

The symbol for the units derived from the names of scientists are written in capital letter

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

Mycorrhiza is an algae.

• True

• False