IIT JEE/IIT JEE Heat And Thermodynamics MCQs :- multiple choice questions and answers. e.g IIT JEE MCQS,IIT JEE Mock Tests , IIT JEE Practice Papers ,IIT JEE Sample Test,IIT JEE Sample questions

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Question 1: When a metal rod is heated it expands because:

the size of its atoms increases

the distance among its atoms increases

atmospheric air rushes into it

the actual cause is still unknown

Total MCQS Questions are 52 in this paper IIT JEE Heat And Thermodynamics