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Question 1
Which one of the following elements is present in the green pigment of leaves?
Question 2
Which one of the following is used for water softening?
Question 3
If the formula of the sodium salt of an anion X is Na2X, then the formula of its aluminium salt would be
Question 4
The heaviest clement known up till January 2015 has the atomic number:
Question 5
Which one of the following is known as Wood Spirit?
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Feb 4CDS & Defence
