Sound — Science STD 8 — Question

The nail is pushed into a wooden plank from its pointed end.

A pencil sharpened at both the ends can be used as a conductor in laboratory.

Do not include chips, packed food and junk food as a part of regular meal during adolescence.

Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.

Plant cell is rigid while animal cell comparatively soft.

Algae are autotrophic.

Two persons are applying forces on two opposite sides of a moving cart. The cart still moves with the same speed in the same direction. What do you infer about the magnitudes and direction of the forces applied?

The attaches and other pieces of luggage are fitted with rollers.

Life does not exist on the Mercury planet.

Porters place a round piece of cloth on their head, when they have to carry heavy loads.