मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ९

Assertion: When water is heated up to 100°C, there is no raise in temperature until all water gets converted into water vapour. Reason: Boiling point of water is 10°C.

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प्रश्न

Assertion: When water is heated up to 100°C, there is no raise in temperature until all water gets converted into water vapour.

Reason: Boiling point of water is 10°C.

पर्याय

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If assertion is false but reason is true.

MCQ
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उत्तर

If assertion is true but reason is false.

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पाठ 7: Heat - Exercise [पृष्ठ ८९]

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सामाचीर कलवी Science [English] Class 9 TN Board
पाठ 7 Heat
Exercise | Q III. 3. | पृष्ठ ८९

संबंधित प्रश्‍न

Define heat energy on the basis of kinetic theory of matter.


Is it correct to say that heat is the cause of temperature?


What causes a change in the temperature of a body?


What is the normal temperature of human body?


How can a glass stopper jammed in the neck of a bottle be removed?


A copper wire 10 cm long is heated from 200C to 300C. Find the increase in length of the wire, if coefficient of linear expansion of copper is 1.7 X 10-5oC-1


Is it possible to boil water in a thin paper container? Explain with a reason.


State one use of each of the following type of thermometer: 
Six's maximum and minimum thermometer.


Convert the following temperature into Fahrenheit scale:
1000C


Give a scientific reason for the following:
It is better to use thin blankets to keep the body warm rather than using a single blanket of thickness equal to their combined thickness.


State three factors on which the increase in the length of a rod depends, on heating.

What is the principle used in a thermometer?

The body temperature of a healthy person is 98.4°F. Find the corresponding temperature on the Celsius scale.

Name two liquid thermometers that are commonly used.

Name a liquid which is a good conductor of heat.

How can the radiating power of a surface be increased?

Temperature of Srinagar (J&K) is -4°C and in Kodaikanal is 3°C which of them has greater temperature? What is the difference between the temperatures of these two places?


Numerical Problems.

An iron ball requires 1000 J of heat to raise its temperature by 20°C. Calculate the heat capacity of the ball.


Heat energy is always transferred from ______ to ______ temperatures.


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