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Question 1
Potassium is a chemical element with the symbol:
Question 2
Which one of the following is NOT a compound?
Question 3
There are some plastics that when moulded once cannot be softened by heating. These are called ___________.
Question 4
Which among the following gases is also known as ‘Laughing Gas’?
Question 5
Which of the following is NOT a noble gas?
Question 6
Which of the following substances is used as a substitute for chlorine in bleaching?
Question 7
Which of the following metals in pure form has the highest melting point?
Question 8
Which chemical law proposes that 'soft drinks and soda bottles are sealed under high pressure to increase the solubility of CO2'?
Question 9
Which of the following solvent is known as Universal Solvent?
Question 10
ZnSO4. 7H2O is the chemical formula of which substance?
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Oct 15BPSC