Friction — Science STD 8 — Question

Does it mean that the net force on an object is zero, if the two forces acting on it in opposite direction are equal ?

In which part of the sky can you find Venus if it is visible as an evening star?

Which is the most conspicuous change (clear visible change) in boys and girls during puberty?

State whether the following statement are True or False. Correct the false statement. Using good quality seed is the only criterion to get high yield.

Name any two types of chemicals used in agriculture which cause water pollution.

If you are living in a cyclone-prone area, what would you do during a cyclone?

What kind of cells are surrounded by a cell wall?

Mention the size of an ostrich egg. Is it a single cell of a group of cells?

How can you show that a sounding tabla is vibrating?