GK Chemistry Quiz 10

1.which of the following is a mixture

2.a mixture of napthelane and sand is separated by

3.the kinetic energy of the gas molecules

4.the number of neutrons’ in the nucleus of an atom of mass A and atomic number Z is given by

5.The reason why no element can have a valence of more than eight is that

6.which of the following compounds is formed by sharing of electrons

7.The scientific associated with the discovery of the nucleus was

8.Tthe concept of electrovalent bond was propounded by

9.washing soda is

10.According to the modern periodic law, the properties of elements are periodic functions of their

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