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Quiz Questions And Answers
"Acid rain" is caused due to air-pollution by
In the Ostwald's process for manufacture of HNO3 used is
Stainless steel is an alloy of
The elements with the highest electronegative character is
Melting point of graphite is
The pH of lemon juice is
Which gas is used in filling electric bulbs?
The fluoride ore of aluminium is
The sulphur exists as
What is the ratio of cement and sand required in mortar?
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