Why is a ventilator provided in a room?

एका वाक्यात उत्तर

A ventilator is provided in a room because it helps in removing the hot air from the room and allows the fresh and cold air to come in.

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पाठ 5: Heat - Exercise [पृष्ठ २३०]

पाठ 5 Heat
Exercise | Q 44 | पृष्ठ २३०

What must be the temperature in Fahrenheit so that it will be twice its value in Celsius?

What causes a change in the temperature of a body?

What is the relation between α and γ?

Convert the following temperature into Celsius scale:
95^oF

Give a scientific reason for the following:
In winter the human body covered with a blanket keeps warm.

If you keep ice at 0° C and water at 0° C in either of your hands, in which hand you will feel more chillness? Why?

When a substance is heated, its temperature ______.

1 calorie equals ______.