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Olympiad Test: Heat And Temperature -1


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15 Questions MCQ Test Science Olympiad Class 7 | Olympiad Test: Heat And Temperature -1

Olympiad Test: Heat And Temperature -1 for Class 7 2022 is part of Science Olympiad Class 7 preparation. The Olympiad Test: Heat And Temperature -1 questions and answers have been prepared according to the Class 7 exam syllabus.The Olympiad Test: Heat And Temperature -1 MCQs are made for Class 7 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Heat And Temperature -1 below.
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Olympiad Test: Heat And Temperature -1 - Question 1

Heat energy flows

Olympiad Test: Heat And Temperature -1 - Question 2

One glass of water at 40ºC is mixed with another glass of water at 60ºC. The temperature of mixture will be:

Olympiad Test: Heat And Temperature -1 - Question 3

The degree of hotness or coldness of a body is measured by its

Olympiad Test: Heat And Temperature -1 - Question 4

Mercury is an ideal liquid used in a thermometer because

Olympiad Test: Heat And Temperature -1 - Question 5

At low temperatures ______ type of thermometers is used

Detailed Solution for Olympiad Test: Heat And Temperature -1 - Question 5

Alcohol has a freezing point much lower than other given substances here.

Olympiad Test: Heat And Temperature -1 - Question 6

1 cal is equal to

Detailed Solution for Olympiad Test: Heat And Temperature -1 - Question 6

1 cal = 4.18 joules. 

Olympiad Test: Heat And Temperature -1 - Question 7

The CGS unit for energy is

Detailed Solution for Olympiad Test: Heat And Temperature -1 - Question 7

 

Olympiad Test: Heat And Temperature -1 - Question 8

When we touch a steel rod and a paper simultaneously, we feel that the rod is colder because

Detailed Solution for Olympiad Test: Heat And Temperature -1 - Question 8

Heat always flows from a hotter region to a colder region. Since iron is a good conductor of heat, more heat will flow from our body to it and we will feel cold. As paper is a bad conductor, less heat will flow from our body. 

Olympiad Test: Heat And Temperature -1 - Question 9

The lower fixed point on the Celsius scale is

Detailed Solution for Olympiad Test: Heat And Temperature -1 - Question 9

The lower fixed point in the Celsius scale is 0ºC, which is the melting point of ice. 

Olympiad Test: Heat And Temperature -1 - Question 10

In the Celsius scale, the upper fixed point is

Detailed Solution for Olympiad Test: Heat And Temperature -1 - Question 10

The upper fixed point in the Celsius scale is 100ºC, which is the boiling point of water. 

Olympiad Test: Heat And Temperature -1 - Question 11

In which of the following, chemical energy is converted into heat energy.

Detailed Solution for Olympiad Test: Heat And Temperature -1 - Question 11

The chemicals present in the candle burn with oxygen to give out heat. 

Olympiad Test: Heat And Temperature -1 - Question 12

Handles of cooking utensils should be made of materials that:

Olympiad Test: Heat And Temperature -1 - Question 13

Which of the following is a good conductor of heat?

Detailed Solution for Olympiad Test: Heat And Temperature -1 - Question 13

Metals are better conductors of heat than non-metals. 

Olympiad Test: Heat And Temperature -1 - Question 14

Which of the following is a bad conductor of heat?

Detailed Solution for Olympiad Test: Heat And Temperature -1 - Question 14

Wood is a non-metal and bad conductor of heat. 

Olympiad Test: Heat And Temperature -1 - Question 15

Radiation depends on

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