Test Details

Heat

Science

Nov 16, 11:00 AM

70 minutes

Nov 16, 12:10 PM

50.0 marks

MCQ

50 questions

Uttam Dash

I'm founder of CCC chanakya coaching centre and also YouTube educational channel #OdiaStudyPortal. I have Completed My Graduation and now I'm on a mission ...(secret)

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Question Text

Question 1 :
One litre of water at $30^{o}C$ is mixed with one litre of water at $50^{o}C$. The temperature of the mixture will be

Question 2 :
A container is partially filled with hot water, sealed and left to cool. Which statements are correct? $1$. As the temperature decreases, water molecules lose kinetic energy. $2$. As the temperature decreases, more water molecules move from vapour to liquid. $3$. As the temperature decreases, the vapour pressure of the water decreases.

Question 3 :
On a cold day when a room temperature is $15^oC$, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of$15^oC$, because

Question 4 :
When two bodies at different temperatures are placed in thermal contact with each other, heat flows from the body at a higher temperature until they both acquire the same temperature. Assuming that there is no loss of heat to the surroundings, then:

Question 7 :
Which of the following is a wrong pair of clothes worn during a particular season ?

Question 9 :
Assertion: Two thin blankets put together are warmer than a single blanket of double the thickness. Reason: Thickness increases because of air layer enclosed between the two blankets.

Question 10 :
In convection process rate of heat transfer is compared in the optionbetween gas and liquid,choose the correct statement

Question 11 :
If $1 cal = 4.2 J$, then $0.2 cal g^{-1} {\;}^oC^{-1}=......... J kg^{-1} K^{-1}$

Question 12 :
Two layers of cloth of equal thickness provide warmer covering than a single layer of cloth of double the thickness, because they :

Question 13 :
Which of the following is the range of temperature recorded by a laboratory thermometer ?

Question 14 :
In experiment of convection heat transfer water inside the pipe, completely gets heated (with the application of heat source) can be explained best by which of the following statements,

Question 16 :
Which of the following is not true about Laboratory thermometers ?

Question 23 :
The molecules of medium vibrate about their mean positions during heat transfer in the process of

Question 26 :
Among the following what should not be done while or before using a clinical thermometer?

Question 28 :
Choose the correct answer from the alternatives given : Formeasuring very high temperature, we use

Question 29 :
Assertion: Snow is better insulator than ice. Reason: Snow contain air packet and air is good insulator of heat.

Question 31 :
Assertion: Two thin blankets put together are warmer than a single blanket of double the thickness. Reason: Air gets trapped between two blanket which is a bad conductor of heat.

Question 35 :
Thermoflasks and doors of refrigerators have two layered structure with an insulator in between so as:

Question 36 :
When a metal conductor connected to left gap of a meter bridge is heated, the balancing point.

Question 37 :
A laboratory thermometer is dipped in a beaker containing ice. As the thermometer is removed the mercury level will

Question 41 :
Assertion: Air is a bad conductor of heat. Reason: It's molecules are in Brownian motion.

Question 42 :
State whether given statement is True or FalseThe process of convection can takes place only in liquid and gases.

Question 43 :
Water cannot be used as a liquid in a thermometer because it has:

Question 45 :
If we keep pop corn in a pressure cooker on a flame, heat is transferred from flame to corn by :

Question 48 :
Seema is planning a trip to Kashmir this summer. Which of the following clothes should she definitely pack?

Question 50 :
State whether given statement is True or FalseTo prevent heat conduction to our hands, handle of cooking vessels are made of bad conductors.

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