National Standard Examination in Chemistry (NSEC) Solved Paper 2016 Part-7

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Q: 26. reacts with aqueous to give and . The products of reaction of with aqueous are

(A)

(B)

(C)

(D)

Answer: (B)

Q: 27. The standard potentials of and half cells in acidic medium are 1.51 V and 1.23 V respectively at 298 K. The standard potential of half-cell in acidic medium at the same temperature is;

(A)

(B)

(C)

(D)

Answer: (B)

Q: 28. Aspartame (X) is an artificial sweetening agent and is 200 times sweeter than sugar. It is an ester of the dipeptide of:

Q 28 Image of Aspartic acid and Phenylalanine

Q 28 Image of Aspartic Acid and Phenylalanine

Q 28 Image of Aspartic acid and Phenylalanine

(A) Alanine and phenylalanine

(B) Aspartic acid and alanine

(C) Phenylalanine and glycine

(D) Aspartic acid and phenylalanine

Answer: (D)

Q: 29. Which one of the following reactions is correct?

(A)

(B)

(C)

(D)

Answer: (A)

Q: 30. Standard molar enthalpy of formation of is equal to

(A) Zero

(B) The standard molar enthalpy of combustion of carbon (graphite)

(C) The standard molar enthalpy of combustion of C(g)

(D) The standard molar enthalpy of combustion of CO(g)

Answer: (B)

Q: 31. The reaction of 1-Phenylpropane with limited amount of chlorine in the presence of light gives mainly.

(A) 4-chloropropylbenzene

(B) 1-chloro-1-phenylpropane

(C) 3-chloro-1-phenylpropane

(D) 2-chloro-1phenylpropane

Answer: (B)

Q: 32. An ionic solid shows electrical conduction due to presence of

(A)

(B)

(C)

(D)

Answer: (B)

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