Multiple Choice Question Answer IX — task. Science CBSE, Class 9.

PDF chapter test TRY NOW

1. One ‘u’ does not stand for

Two atom of all the element
An atom of carbon (C–13)
1/12 mass of carbon atom
1/12 of hydrogen molecule

2. Which of the following contains 10 millimoles of molecules

2.24 l of \(CO_2\) at STP
422 l of \(CO_2\) at STP
224 l of \(CO_2\) at STP
100 ml 0.1 M HCl

Login or Fast registration

Previous exercise

Exit to the topic

Did you find an error?

Register for free to see more content

Register for free to see more content