Objective TestQ1: Fill in the blanks
a. The process of ________ causes cooling.
b. The process of cooling glass is known as ____.
c. Liquids have no fixed ______ but have fixed _____.
d. ____ exists in all three states of matter.
e. Carbon dioxide is a white solid called _____ at temperature below ______.
Q2: State True or False
a. Evaporation of water is a bulk phenomenon.
b. Diffusion takes place in haphazard and random way.
c. SI unit of pressure is Pascal.
d. A gas is highly incompressible fluid.
e. Solids and liquids can be identified from their characteristic melting and boiling points.
Q3: Zig-zag movement of the solute particle in a solution is known as
(a) Linear motion
(b) Circular motion
(c) Brownian motion
(d) Curved motion.
Q4: Gases can be liquified by
(a) increasing pressure
(b) decreasing temperature
(c) both (a) and (b)
(d) decreasing pressure
Q5: Density of a substance is defined as
(a) ratio of mass and volume
(b) product of mass and volume
(c) ratio of mass and temperature
(d) product of mass and temperature
Q6: Which of the following is not matter
(d) Moon rock
Q7: Which is more effective in cooling?
(a) Ice at 0° C
(b) Water at 0° C
(c) Water at 100° C
(d) Ice at 100° C
Q8: 0° C temperature is equal to
(a) 0 K
(b) 273 K
(c) -273 K
(d) 300 K
Q9: The process involving the change of state from solid to gas is called
1(a) : evaporation
(b) : annealing
(c) : no fixed shape but fixed volume.
(d) : mass
(e) : dry ice, -78.6 ° C
2(a) False (Evaporation occurs at surface only, boiling is a bulk phenomenon)
(d) False (gases are highly compressible)
(e) True (but with exceptions e.g. Na and K are solids but have low melting points, even less than water)
3: (c) Brownian motion
4: (c) both (a) and (b)
5: (a) ratio of mass and volume
6: (b) Humidity
7: (a) Ice at 0° C
8: (b) 273 K
9: (c) sublimation