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Bt Heat

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07C2020-2021
Baseline Test -Heat ,Flow and Temperature (…
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Baseline Test -Heat ,Flow and Temperature (07C2020-2021)
32
5.2
Active
Responses
Average Score
Status
1. At night, sea water gets (1 point)
34% of respondents (11 of 32) answered this question correctly.
warm than land
11
cool than land
16
both a and b
5
very hot
0
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2. Temperature of boiling water cannot be measured by a __ __ thermometer. (1 point)
59% of respondents (19 of 32) answered this question correctly.
A) Celcius
13
B) Clinical
19
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3. Land breeze blows during (1 point)
63% of respondents (20 of 32) answered this question correctly.
A) winter
6
B) summer
2
C) night
20
D) day
4
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SB
4. Color and texture that is the best absorbate of radiant heat is (1 point)
50% of respondents (16 of 32) answered this question correctly.
black and shiny
6
white and shiny
8
black and dull
16
white and dull
2
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5. The transfer of thermal energy without any medium is known as (1 point)
41% of respondents (13 of 32) answered this question correctly.
conduction
9
convection
10
radiation
13
vibration
0
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6. If a substance is hot, its particles will (1 point)
84% of respondents (26 of 31) answered this question correctly.
move fast than the cooler obj…
26
move slow than the cooler obj…
2
move as the cooler object
1
may move fast or slow than th…
2
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7. Handles of saucepans and other cooking utensils are (1 point)
50% of respondents (16 of 32) answered this question correctly.
thermal conductors
11
thermal insulators
16
electrical conductors
2
metalloids
3
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8. Which two liquids are used in the construction of minimum and maximum thermometers? (1 point)
44% of respondents (14 of 32) answered this question correctly.
mercury and water
8
water and alcohol
5
mercury and alcohol
14
mercury and bromine
5
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9. Why does the bottom of a lake not freeze in severe winter even when the surface is all frozen?
(1 point)
28% of respondents (9 of 32) answered this question correctly.
The water has large specific h…
2
The conductivity of ice is low
9
The water has large latent hea…
5
The temperature of the earth …
16
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10. Stainless steel pans are usually provided with copper bottoms. The reason for this could be that
(1 point)
66% of respondents (21 of 32) answered this question correctly.
A) copper is a better conducto…
21
B) such pans appear colourful.
0
C) copper is easier to clean th…
4
D) copper bottom makes the …
4
Option 2
3
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