1.
Mass spectrometer is used to determine Mass number of isotopes and___________________?

2.
The number of peaks obtained in mass spectrometry shows____________________?

3.
Empirical formula of chloroform is____________________?

4.
Molecular mass of water (18g) means__________________?

5.
Which of the following statements about isotopes is correct ?

6.
One mole of CO2 contains?

7.
The number of isotopes of elements with even mass number and even atomic number are ________________?

8.
Which of the following terms is not used for ionic compound ?

9.
moles of each aluminium and oxygen react with each other to produce aluminium oxide. The amount of product formed is______________________?

10.
Which one of the following has the maximum number of isotopes ?

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