Tissues — Science STD 9 — Question

Rutherford experiment of scattering of α-particles showed for the first time that the atom has:

Nasal and genital tracts are lined by:

A particle is moving in a circular path of radius r. The displacement after half a circle would be:

A body at rest can have:

Match the Column I (Type of colloid) with Column II (Examples).
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	Column I		Column II
A.	Gel	I.	Rubber
B.	Foam	II.	Face cream
C.	Emulsion	III.	Coloured gemstone
D.	Solid sol	IV.	Butter
E.	Aerosol	V.	Cloud

A boy is whirling a stone tied with a string in an horizontal circular path. If the string breaks, the stone:

For each of the following, use letters to indicate physical state of matter. ‘s’ for solid, ‘l’ for liquid ‘g’ for gaseous, 'p' for plasma, B.E.C. for Bose-Einstein Condensate.

S.No.	Specific Characteristic	Physical state
1.	Ionised gases
2.	Most ordered state
3.	Least ordered state
4.	Fixed volume, no shape
5.	Cooling gas at super low temperature

One of the following does not undergo sublimation. This one is:

1. Iodine.
2. Sodium chloride.
3. Ammonium chloride.
4. Camphor.