RRB GROUP D Chemistry Quiz - 25

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Question 1:

O2-, F–, Na+  are isoelectronic species. They have same

Question 2:

Newland gave law of octaves and Dobereiner gave-

Question 3:

In electrolytic refining of copper , the electrolyte is a solution of......................

Question 4:

For Hydrogen atom ,spectral region correspond to lyman series is-

Question 5:

The relative number and kinds of atoms are constant in a given compound. This postulate is related to-

serach-testwale
x