Composition of Matter — Science STD 8 — Question

State two metals which can be cut easily with a knife.

Gaseous element.(Give Two Example)

A metal can be drawn into a wire. Explain why.

End stage of a star depends on its initial mass.

Difine :Isotonic solution:

The density of a gas decreases on heating. Which of the pictures in Fig. makes use of this?

Name ten devices in which electric cells are used.

Classify the following compounds into organic compounds, inorganic compounds and complex compounds.
Petrol, common salt, haemoglobin, blue vitriol, cyanocobalamine, cooking gas.

Diseases spread through insects.