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question_answer1) People normally put some Naphthalene ball in the box in which they keeps cloths and winter blankets. After some weeks they find that there is no Naphthalene ball left in the box. Why does the Naphthalene ball disappears with time, without leaving any residue?
question_answer2) Harry was sitting in his study room and studying. His mother was cooking some food in the kitchen. After some time he got the smell of fish and asked his mother if she was cooking fish? He got the smell of hot sizzling fish from several meters away because of:
question_answer3) The kelvin temperature for \[\mathbf{373}{}^\circ \mathbf{C}\] is:
question_answer4) The amount of heat required to change one form of matters to other without changing the temperature is called:
question_answer5) The force of attraction between the molecules of water is called:
question_answer6) Which one of the following solid is compressible?
question_answer7) Which will cause severe burn?
question_answer8) At what temperature water has highest density?
question_answer9) Martin put some petrol in a saucer and left open in the garage. Next day when he went to garage he found that there was no petrol left in it. What might have happened to the petrol?
question_answer10) Mary heat some water on the gas and placed a thermometer to record the temperature change which will occur. She observed that the temperature kept increasing till the water start boiling, but after that it is found constant. What might be the temperature at which this have happened?
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