Buy Solutions and Surface Chemistry

Buy Solutions and Surface Chemistry
Buy Solutions and Surface Chemistry
1. A solution is [SSC (10 2) 2014]
(a) a homogeneous mixture of two or
more substances.
(b) a solid dissolved in a liquid.
(c) a solid dissolved in water.
(d) a mixture of two liquids.
2. A solution which contains the maximum
amount of the solute that can be
dissolved in a given amount of solvent
at a particular temperature is called
(a) saturated solution
(b) unsaturated solution
(c) supersaturated solution
(d) None of the above
3. Water is a good solvent. This is due to
high [NDA 2013]
(a) dielectric constant of water.
(b) surface tension of water.
(c) specific heat of water.
(d) heat fusion of water.
4. Which one of the following substances
is not a mixture? [NDA 2019]
(a) Ice (b) Ice-cream
(c) Air (d) Honey
5. Blood has been found isotonic with
(a) the saturated solution of NaCl.
(b) the saturated solution of KCl.
(c) the saturated solution of 1:1 mixture
of NaCl and KCl.
(d) the normal sodium chloride solution.
6. A hard shell of an egg was dissolved in
HCl. The egg was then placed in a
concentration solution of NaCl. What
will happen?
Buy Solutions and Surface Chemistry
(a) The egg will shrink.
(b) The egg will swell.
(c) The egg will become harder.
(d) There will be hardly any visible
7. Soil is an example of which of the
following? [SSC 2017]
(a) Homogeneous mixture
(b) Molecule
(c) Compound
(d) Heterogeneous mixture
8. If an unsaturated sugar solution is
prepared by mixing 100 grams of sugar
with half litre of water, which of the
following physical quantities will not
change? [UPPSC (Pre) 2017]
(a) Mass (b) Density
(c) Concentration (d) Volume
9. Which one of the following substances
is not a mixture? [NDA 2019]
(a) Tin (b) Sea water
(c) Soil (d) Air
10. The pH value of the solution obtained
by complete neutralisation of
hydrochloric acid and sodium
hydroxide solution will be [HPSC 2012]
(a) exactly 7
(b) zero
(c) more than 7
(d) less than 7
11. Azeotropic mixtures are
(a) mixture of two solids.
(b) those which boil at different
(c) those which can be fractionally
(d) the constant boiling mixture.
12. The solubility of a gas in liquid
increases with
(a) increase in temperature.
(b) reduction in gas pressure.
(c) decrease in temperature and
increase in gas pressure.
(d) amount of liquid taken.
13. Isotonic solutions have the same
(a) normality
(b) molar concentration
(c) strength
(d) density
14. The process of diffusion in gases take
place due to the
(a) difference in their densities.
(b) difference in their composition.
(c) equal in densities.
(d) All of the above
15. Which of the following methods helps in
separating cream from milk? [SSC 2017]
(a) Distillation
(b) Centrifugation
(c) Chromatography
(d) Sublimation
16. The process by which milk is converted
into curd is called [SSC 2012]
(a) pasteurisation
(b) vernalisation
(c) fermentation
(d) retting
Buy Solutions and Surface Chemistry
17. Muddy water is purified by adding alum
due to
(a) osmosis (b) emulsification
(c) coagulation (d) dialysis
18. The process of separating of cream
from milk is called
(a) electro-osmosis
(b) emulsion
(c) emulsification
(d) demulsification
19. Heating of rubber with sulphur is known
as ……… . [SSC 2017]
(a) galvanisation (b) sulphonation
(c) bessemerisation (d) vulcanisation
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