P-2 Life Processes in Living Organisms Part – 2 — Science STD 10 — Question

What type of chemical reactions take place when:
A magnesium wire is burnt in air?

A ray of light travelling in air is incident on a parallel-sided glass slab (or rectangular glass slab). Draw a ray-diagram indicating the change in its path in glass.

Where is the near point of a person suffering from hypermetropia (or long-sightedness)?

Which book was published by Darwin to explain this theory? (Board’s Model Activity Sheet)

Why does-the colour of copper sulphate solution change when an iron nail is kept immersed in it?

Identify and complete the following correlations: White revolution : Increase in dairy production : : Green revolution : ……….

State whether the following statement is true or false: The sex of an infant is not a case of inheritance of characteristics.

On what basis is a chemical equation balanced?

what is a catalyst ? write any one reaction which is brought about by use of catalyst?

Which electrical appliance convert electrical energy into mechanical energy?