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SET-1
1.
Good absorbers of heat are
A.
good emitters
B.
non-emitters
C.
highly emitters
D.
poor emitters
Answer :
Option (A) good emitters
Answer & Solution
2.
Pure water freezes at a temperature
A.
0°F
B.
19°F
C.
47°F
D.
32°F
Answer :
Option (D) 32°F
Answer & Solution
3.
If we add salt to pure water, its boiling point will
A.
decrease
B.
increase
C.
remains same
D.
None of the above
Answer :
Option (B) increase
Answer & Solution
4.
The temperature at which Celcius and Fahrenhite scales give the same reading is
A.
32°C
B.
40°C
C.
0°C
D.
- 40°C
Answer :
Option (D) - 40°C
Answer & Solution
5.
When water cools from 7°C to 0°C
A.
It expands only
B.
It first contracts and then expands
C.
It contracts only
D.
It first expand and then contracts
Answer :
Option (B) It first contracts and then expands
Answer & Solution
6.
What was the stream point on the Fahrenheit scale?
A.
32°F
B.
80°F
C.
212°F
D.
100°F
Answer :
Option (C) 212°F
Answer & Solution
7.
______ expansion makes the Eiffel Tower taller during summers.
A.
Slope
B.
Chemical
C.
Thermal
D.
Gravitational
Answer :
Option (C) Thermal
Answer & Solution
8.
At what temperature , mass of pure water of volume 1 cubic centimeter is 1 gm?
A.
100°C
B.
10°C
C.
0°C
D.
4°C
Answer :
Option (D) 4°C
Answer & Solution
9.
Which one of the following metals is the best conductor of heat and electricity?
A.
Silver
B.
Potassium
C.
Copper
D.
Sodium
Answer :
Option (A) Silver
Answer & Solution
10.
The heat of the Sun reaches us by
A.
Radiation
B.
Convection
C.
Conduction
D.
None of the above
Answer :
Option (A) Radiation
Answer & Solution
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