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Physics 9 Chapter 9 - Transfer of Heat - 7
1.
What is false ceiling?
a) Ceilings of rooms is covered with cement
b) Ceilings of rooms is covered with copper
c) Ceilings of rooms is covered with iron
d) Ceilings of rooms is covered with aluminium
2.
By which of the following, cookers are made?
a) Plastic
b) Glass
c) Aluminium
d) Polystyrene
3.
What happens to the thermal conductivity of a wall if its thickness is doubled?
a) Remains the same
b) Becomes one fourth
c) Becomes double
d) Becomes half
4.
By which of the following, cooking plates are made?
a) Aluminium
b) Plastic
c) Polystyrene
d) Glass
5.
By which of the following, sauce pans are made?
a) Glass
b) Plastic
c) Copper
d) Polystyrene
6.
By which of the following, boiler are made?
a) Aluminium
b) Polystyrene
c) Plastic
d) Glass
7.
By which of the following, radiators are made?
a) Glass
b) Plastic
c) Polystyrene
d) Copper
8.
By which of the following, condensers of refrigerators are made?
a) Plastic
b) Glass
c) Aluminium
d) Polystyrene
9.
Which boxes are used for making ice, ice cream?
a) Metal boxes
b) Glass boxes
c) Plastic boxes
d) Non-metal boxes
10.
Which of the following is used for making handle of sauce pans?
a) Insulators
b) Conductors
c) Aluminium
d) Copper
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