Metals and Non-Metals — Science STD 10 — Question

Name the method by which bread mould (Rhizopus fungus) reproduces. Is this method sexual or asexual?

What type of nuclear reaction is responsible for the liberation of energy:

1. In a nuclear reactor?
2. In the sun?

Name a chemical reaction which is characteristic of unsaturated hydrocarbons (like alkenes and alkynes).

What is the magnification produced by a plane mirror?

As light rays emerge from a glass prism into air, are they refracted towards or away from the normal?

How does the electronic configuration of the atom of an element relate to its position in the modern periodic table?

When do an object and its image coincide in a convergent mirror?

Identify the type of chemical reaction taking place in the following:
On heating copper powder in the air in a china dish, the surface of copper powder turns black.

If the potential difference between the end of a wire of fixed resistance is doubled, by how much does the electric power increase?

In a human, how many chromosmes are present in:a brain cell?