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Worksheetsheat
Total questions: 31
Worksheet time: 16mins
Which will not undergo sublimation?
Ammonium chloride
Camphor
Sodium chloride
Iodine
Which of the following expands only in volume when heated?
Solid
Liquid
Gas
Both (b) and (c)
The type of energy which causes in us the sensation of hotness or coldness is called ___________.
chemical energy
magnetic energy
light energy
heat energy
A bimetallic strip made from brass and invar bends when heated. When it's bent, the object has ___________.
brass on the outside and invar on the inside
invar on the outside and brass on the inside
brass and invar of the same length
brass on the outside for a while and then invar will take its place
The increase in area of a solid when heated is called ___________.
thermal expansion
linear expansion
superficial expansion
cubical expansion
Small gaps are left between railway lines because ___________.
rails of very long dimensions will shatter
expansion of rails occurs during summer
contraction of rails occurs during winter
both (b) and (c)
SI Scale of temperature is ___________.
Celsius scale
Kelvin scale
Fahrenheit scale
Reaumur scale
The increase in length of a solid when heated is called ___________.
thermal expansion
linear expansion
superficial expansion
cubical expansion
One degree Celsius rise in temperature is equal to ___________.
1 degree rise on the Kelvin scale
1 degree rise on the Fahrenheit scale
both (a) and (b)
1 degree fall on the Kelvin scale
The upper standard point on the Fahrenheit scale is ___________.
100 °
120 °
212 °
180 °
The liquid metal used in a thermometer __________.
is able to expand uniformly for all temperatures
is transparent and easy to see
is opaque and difficult to read
is able to expand uniformly for certain temperatures
The unit of measurement of temperature is ___________.
metre
kilogram
degree celsius
second
Paheli and Boojho measured their body temperature. Paheli found hers to be 98.6°F and Boojho recorded 37°C. Which of the following statements is true?
Paheli has a higher body temperature than Boojho.
Paheli has a lower body temperature than Boojho.
Both have normal body temperature.
Both are suffering from fever.
Heat always flows ___________.
from a colder object to a hotter object
from a hotter object to a colder object
in both directions
from a stationary object to a moving object
What is the normal body temperature of a healthy person?
37°C
37°F
37°K
98.4 K
A thermometer contains __________.
water
mercury
silver
copper
The temperature at which pure ice melts is ___________.
0°C
100°C
-100°C
98.6°F
If we add a lump of ice to a tumbler containing water, ___________.
heat flows from water to ice
heat flows from ice to water
heat flows from water to ice if water is more in quantity.
heat flows from ice to water if ice is more in quantity.
Name the device which is used to measure the hotness or coldness of an object.
Picometer
Barometer
Manometer
Thermometer
Which one of the following is a reliable measure of heat?
Hotness
Coldness
Temperature
None of these
Resultant temperature of a mixture of of 20 g ice at 0°c and 20 g water at 50 °c
Specific heat of water in cal/g°c
(a)
_____behaves like heat stores house for the earth
Oceans
Hills
Plateaus
All the above
The presence of water vapour molecules in air is
Dew
Humidity
Fog
Condensation
The principle of method of mixtures
Heat gain by hot body is equal to heat lost by cold
Heat gain by heavier body is equal to heat lost by lighter body
Heat gained by cold body is equal to heat lost by hot body
All the above
Si units of specific heat
J.kg.K
J/kg.K
Kg/J.K
K/J.kg
Which of the following is a cooling process
Condensation
Boiling
Evaporation
All the above
The process of escaping of molecules from the surface of a liquid at any temperature is called
Melting
Condensation
Freezing
Evaporation
Temperature of an iron rod is 330 K. Its temperature in centigrade
55
59
53
57
Rate of evaporation depends on
Surface area
Temperature
Vapour already present
All the above
When ice melts its temperature
Remains constant
Increases
Decreases
Cannot say
