Questions

The relative density of a substance is the ____.

Improve the bracketed part of the sentence

His condition has only deteriorated, his life (hangs with threads).

Name the vitamin whose deficiency causes excessive bleeding?

____ are atoms/molecules/ions containing the same number of electrons.

The most abundant of the rare gases i ?

The main source of National Income in India is

Valency of an element depends on which of the following?

I. Number of losing electron

II. Number of gaining electron

III. Number of sharing electron

Rearrange the parts of the sentence in correct order.

Earlier its forays

P-were concentrated on ancient
Q-and medieval India
R-in history