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83 questions
1
Heat and Thermodynamics
Moderate
+1.0
-0.25
In an ecosystem, flow of energy declines as it passes from lower to higher trophic level. This is explained by the following :
2
Heat and Thermodynamics
Moderate
+1.0
-0.25
The temperature point at which solid, liquid and gaseous states may stay together is known as :
3
Heat and Thermodynamics
Moderate
+1.0
-0.25
Transfer of heat by convection can take place in
4
Heat and Thermodynamics
Moderate
+1.0
-0.25
A liquid remains hot or cold for a long time in thermos flask because there is no loss or gain of heat by
5
Heat and Thermodynamics
Moderate
+1.0
-0.25
Steam at 100°C causes more severe burns than the water at the same temperature, because :
6
Heat and Thermodynamics
Moderate
+1.0
-0.25
The hand burns more by steam comparatively to boiling water, because –
7
Heat and Thermodynamics
Moderate
+1.0
-0.25
The heat required in calories to convert one gram of ice at 0°C to steam at 100°C is approximately
8
Heat and Thermodynamics
Moderate
+1.0
-0.25
At what temperature are the reading of a Centigrade and Fahrenheit thermometer the same?
9
Heat and Thermodynamics
Moderate
+1.0
-0.25
Which one of the following scales of temperature does not have a negative value?
10
Heat and Thermodynamics
Moderate
+1.0
-0.25
Let the average temperatures in Centigrade (C) and Fahrenheit (F) be C̄ and F̄. If C̄ and F̄ are related to F = 9/5 C + 32, then F̄ and C̄ have the relation: