Olympiad Test: Heat And Temperature -1


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


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This mock test of Olympiad Test: Heat And Temperature -1 for Class 7 helps you for every Class 7 entrance exam. This contains 15 Multiple Choice Questions for Class 7 Olympiad Test: Heat And Temperature -1 (mcq) to study with solutions a complete question bank. The solved questions answers in this Olympiad Test: Heat And Temperature -1 quiz give you a good mix of easy questions and tough questions. Class 7 students definitely take this Olympiad Test: Heat And Temperature -1 exercise for a better result in the exam. You can find other Olympiad Test: Heat And Temperature -1 extra questions, long questions & short questions for Class 7 on EduRev as well by searching above.
QUESTION: 1

Heat energy flows

Solution:
QUESTION: 2

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

Solution:
QUESTION: 3

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

Solution:
QUESTION: 4

Mercury is an ideal liquid used in a thermometer because

Solution:
QUESTION: 5

At low temperatures ______ type of thermometers is used

Solution:

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

QUESTION: 6

1 cal is equal to

Solution:

1 cal = 4.18 joules. 

QUESTION: 7

The CGS unit for energy is

Solution:
QUESTION: 8

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

Solution:

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. 

QUESTION: 9

The lower fixed point on the Celsius scale is

Solution:

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

QUESTION: 10

In the Celsius scale, the upper fixed point is

Solution:

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

QUESTION: 11

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

Solution:

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

QUESTION: 12

Handles of cooking utensils should be made of materials that:

Solution:
QUESTION: 13

Which of the following is a good conductor of heat?

Solution:

Metals are better conductors of heat than non-metals. 

QUESTION: 14

Which of the following is a bad conductor of heat?

Solution:

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

QUESTION: 15

Radiation depends on

Solution:

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