Class 8 Science MCQs - Chapter 4

Heating and Cooling Quiz Questions and Answers PDF - 7

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Heating and Cooling Questions & Answers PDF Download: MCQ Quiz 7

MCQ 31: In appliances like electric irons, heaters, air-conditioners and refrigerators the temperatures are kept constant by

stabilizer
extension
thermostat
thermometer

MCQ 32: Ice cubes melt at room temperature due to heat

gain
loss
increased
constant

MCQ 33: When the metal ball loses heat and cools, its volume

increases
decreases
remains same
raised

MCQ 34: The uneven expansion of bimetallic strip is used in

thermostats
thermometer
barometers
spectrometers

MCQ 35: In laboratory the thermometer which is used to measure temperatures is

ordinary thermometer
laboratory thermometer
both a and b
none

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