Metals and Non-Metals — Science STD 10 — Question

Which fossil fuel is conserved.
when we save on electricity?

State the type of lens used to correct hypermetropia.

A ray of light going towards the focus of a convex mirror becomes parallel to the principal axis after reflection from the mirror. Draw a labelled diagram to represent this situation

How are the haploid cells formed?

What size fuse should be used in the geyser circuit?

The chemical reactions in which heat is liberated are called………..reactions.

Which product of the nuclear fission of uranium-235 is utilised to cause further fission of its nuclei?

Name the metal which is extracted from the ore called ‘rock salt’.

Which gas is evolved when ethanol reacts with sodium?

Name the part of the human eye that forms a transparent bulge on the surface of the eyeball.