Which of the following acid is used by goldsmiths for cleaning gold and silver ornaments?
A) HCL
B) H2SO4
C) HNO3
D) H3PO4
Correct Answer:
Verified
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Q8: Vitamin C is an organic acid known
Q9: Soaps are sodium salts of
A)mineral acids
B)fatty acids
C)bases
D)carbonic
Q10: Which of the following is not a
Q11: Which of the following acid is used
Q13: Which order of relative size amongst the
Q14: Which one of the following has the
Q15: Which of the following is an example
Q16: When steam is passed over hot coke,
Q17: Producer gas is a mixture of
A)carbon monoxide
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