Give reason :
(a) A frying pan is made up of steel but its handle is made up of wood.
(b) Graphite is used to make lead of the pencils.
(c) Argon is filled in electric bulbs.

Give reasons : Graphite is used in the leads of pencils.

Give reasons: Argon is used to fill light bulbs.

Lead of pencil is made up of …………………..

.Give reason for the following: (a) School bells are made up of metals. (b) Electric wires are made up of copper.

Give reasons (a) A gas fills completely the vessel in which it is kept. (b) A gas exerts pressure on the walls of the container. (c) A wooden table should be called a solid. (d) We can easily move our hand in air but to do the same through a solid block of wood. we need a karate expert.

An organism uses 20 amino acids while its DNA is made up of 6 types of nitrogenous bases. What would be the minimum size of a codon ?

Fill in the blanks (a) Lining of blood vessels is made up of…… . (b) Lining of small intestine is made up of……. . (c) Lining of kidney tubules is made up of…… . (d) Epithelial cells with cilia are found in ..... of our body

A lead pencil consists of a cylinder of wood with a solid cylinder of graphite filled into it. The diameter of the pencil is 7mm, the diameter of the graphite is 1mm and the length of the pencil is 14cm. Find the: (i) Volume of the graphite (ii) Volume of the wood (iii) The weight of the whole pencil, if the specific gravity of the wood is 0. 7\ gm//c m^3 and that of the graphite is 2. 1\ gm//c m^3

A hemispherical tank is made up of an iron sheet 1 cm thick. If the inner radius is 1 m, then find the volume of the iron used to make the tank

A hemispherical tank is made up of an iron sheet 1 cm thick. If the inner radius is 1 m,then find the volume of the iron used to make the tank