Q1. Which of the following statement is incorrect for states of matter?
(a) The forces of attraction between the gas particles is very less
(b) Plasma consists of super energetic and super excited particles
(c) The plasma glows with a special colour depending on the nature of the gas
(d) Bose-Einstein condensate is formed by heating a gas of extremely low density
Q2. Read the following statement(s).
I. Gases are soluble in liquids as well as in solids.
II. Gases which form ion in the solvent are soluble in that solvent.
III. Gases which can be liquefied easily are more soluble in water than the other gases which are not liquefied easily.
Which of the statement(s) given above is/are correct?
(a) I and II
(b) II and III
(c) Only I
(d) All of the above
Q3. Consider the following statement(s).
I. The amount of heat required to change 1 kg solid into liquid at atmospheric pressure and at its melting point is called the latent heat of fusion.
II. The phenomenon of change of a liquid into vapour at any temperature below its boiling point called sublimation.
III. The process of conversion of a liquid into its vapour is called boiling.
IV. The process of converting solid into gaseous state is called evaporation.
Which of the above statement(s) given above is/are correct?
(a) Only I
(b) II and IV
(c) I and III
(d) II, III and IV
Q4. On addition of salt to water causes
(a) boiling point increases
(b) boiling point decreases
(c) boiling point is not affected
(d) freezing point increases
Q5. A glass of cold milk sometimes forms a coat of water on the outside of the glass. How does most of the water get there?
(a) Water evaporates from the milk and condenses on the outside of the glass
(b) The glass acts like a semipermeable membrane and allows the water to pass but not the milk
(c) Water vapours condense from air
(d) The coldness causes oxygen and hydrogen from the air combine on the glass forming water
Q6. Which among the following is correct regarding homogeneous mixture?
(a) Sugar solution, salt solution, blood
(b) Sugar solution, salt solution, lemonade
(c) Sugar solution, milk, gemstones
(d) Hair, cream, butter, cheese
Q7. Which of the following statement is correct for true solutions?
(a) It is heterogeneous mixture
(b) They are unstable
(c) Their particles can pass through filter paper
(d) They can be separated from mixture by filtration process
Q8. Consider the following statements and choose the correct option.
I. No change in volume occurs on dissolving sugar in water.
II. Sugar particles go into the empty spaces present in the particles of water.
(a) Both statements I and II are false
(b) Statement I is correct but statement II is false
(c) Statement II is correct but statement I is false
(d) Both statement I and II are correct
Q9. Some suspensions are given
V. Aerosol spray
Among the following, true suspension are
(a) I, II and III
(b) III, IV and V
(c) I, III and V
(d) I, III and IV
Q10. Match Column I with Column II and select the correct answer using the codes given below columns.
Column I Column II
A. Smoke 1.Dispersion of gas in liquid
B. Gel 2.Dispersion of solid in solid
C. Emulsion 3.Dispersion of liquid in liquid
D. Foam 4.Dispersion of liquid in solid
5.Dispersion of solid in gas
A B C D
(a) 4 2 3 1
(b) 2 4 1 5
(c) 5 4 3 1
(d) 5 2 1 3