Question 10 options: a) B > A > C b) A > C > B c) A > B > C d) C > A > B 11) Whi

Question

Question 10 options:

a) B > A > C

b) A > C > B

c) A > B > C

d) C > A > B

11) Which of the following is an unsaturated fatty acid?

Question 11 options:

stearic acid

arachidonic acid

none of these

palmitic acid

12) Which carboxylic acids undergo decarboxylation quite readily on mild heating?

Question 12 options:

none of them

all of them

only a-ketoacids

only b-ketoacids

13) Which of the following classes of reagents will convert a carboxylic acid into its carboxylate salt?

Question 13 options:

a base

an acid

an oxidizing agent

a reducing agent

14) In what form(s) will a carboxylic acid, RCOOH, be present if the pH of an aqueous solution is adjusted to be the same as the pKa of the acid?

Question 14 options:

primarily as RCOOH (aq)

primarily as RCOO-(aq)

equal amounts of (a) and (b)

neither (a) nor (b)

a) B > A > C

b) A > C > B

c) A > B > C

d) C > A > B

Explanation / Answer

10. B(due to Hydrogen bond)

11.B(arachidonic acid is a polyunsaturated with four C=C double bonds)

12.C(only a Keto acid)

13.A(a base due neutralisation reaction)

14.A(for pH=pKa dissociation of RCOOH should be very less thus the acid should primarily be as RCOOH)

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