National Standard Examination in Chemistry (NSEC) Solved Paper 2016 Part-5
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Q: 18. Three Faradays of electricity are passed through aqueous solutions of and kept in three vessels using inert electrodes. The ratio (in moles) in which the metals are deposited is:
(A)
(B)
(C)
(D)
Answer: (C)
Q: 19. Nepetalactone (X) is isolated as an oil from Catnip.
The number of chiral carbon atoms and the amount of KOH consumed by 83 mg of Nepetalactone are respectively
(A)
(B)
(C)
(D)
Answer: (D)
Q: 20. Number of P-S single bonds and P-S double bonds (P = S) in are respectively
(A)
(B)
(C)
(D)
Answer: (D)
Q: 21. If the solubility product of iron (III) hydroxide is , the pH of a saturated Solution of iron (III) hydroxide in distilled water is close to
(A) 4
(B) 5
(C) 7
(D) 9
Answer: (C)
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