Cell Structure and Functions — Science STD 8 — Question

What is acne?

A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad (Ignore the frictional force due to air resistance).

Name the various air pollutants discharged by motor vehicle exhausts.

Name one Government agency which is involved in procuring food grains (like wheat and rice) from farmers and storing them properly.

Variety of all forms of life found in a region' is known by a specific name, what is it ?

What is the significance of interparticle spacing in matter?

What kind of cells are surrounded by a cell wall?

Some grass is growing in a wheat field. What will it be known as?

Unscramble the underlined words in the following sentences. The overgrowth of sumselc in xalnyr leads to the hoarse voice in adolescent boys.

Tick True/ False against the following statements. Kerosene is not a fossil fuel.