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Question 1
The strength of an acid refers to which of the following ability of acid?
Question 2
A lack of fluorine in the diet is the cause of which of the following disease?
Question 3
The chemical name of quartz is ______
Question 4
The chief source of naphthalene is
Question 5
Transboundary pollution (or) Acid rain is casued by :
Question 6
Which element used for making solar cells?
Question 7
Ruby and sapphire are oxides of ____.
Question 8
Sea water can be purified by the process of
Question 9
PVC is obtained by the polymerization of _____ .
Question 10
Which of the following prevents bleeding of gums?
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Mar 12SSC & Railway
