Acids, Bases and Salts — Science STD 7 — Question

The word acid comes from the Latin word 'acere' which means:

Thick fur and skin is characteristic of animals seen in ________:

Which of the following reduces the effectiveness of filtering water?

The pit that we have to dig for vermicomposting has to be minimum of ___ cm.

A man painted his main gate made up of iron, to
(i) prevent it from rusting.
(ii) protect it from the Sun.
(iii) make it look beautiful.
(iv) make it dust free.
Which of the above statements is/are correct?

The Rearing Of Silkworms For Obtaining Silk Is Called:

Electromagnets are used in

The formation of clot when bleeding is stopped from a wound in a human body is due to:

An Amoeba ingests a food particle.
Which of these shows the correct sequence of nutrition in the Amoeba?

In a solid, heat is transferred mainly by the process of: