1
IIT-JEE 2009 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1

A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R, which undergoes intramolecular aldol reaction to give predominantly S.

IIT-JEE 2009 Paper 1 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 11 English Comprehension

The structures of the products Q and R, respectively, are

A
IIT-JEE 2009 Paper 1 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 11 English Option 1
B
IIT-JEE 2009 Paper 1 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 11 English Option 2
C
IIT-JEE 2009 Paper 1 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 11 English Option 3
D
IIT-JEE 2009 Paper 1 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 11 English Option 4
2
IIT-JEE 2009 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1

A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R, which undergoes intramolecular aldol reaction to give predominantly S.

IIT-JEE 2009 Paper 1 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 9 English Comprehension

The structure of the product S is

A
IIT-JEE 2009 Paper 1 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 9 English Option 1
B
IIT-JEE 2009 Paper 1 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 9 English Option 2
C
IIT-JEE 2009 Paper 1 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 9 English Option 3
D
IIT-JEE 2009 Paper 1 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 9 English Option 4
3
IIT-JEE 2009 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-0

Match each of the diatomic molecules in Column I with its property/properties in Column II:

Column I Column II
(A) $${B_2}$$ (P) Paramagnetic
(B) $${N_2}$$ (Q) Undergoes oxidation
(C) $$O_2^ - $$ (R) Undergoes reduction
(D) $${O_2}$$ (S) Bond order $$\ge$$ 2
(T) Mixing of $$s$$ and $$p$$ orbitals

A
$$\mathrm{(A)\to(P),(Q),(R),(T);(B)\to(S),(T);(C)\to(P),(Q);(D)\to(P),(Q),(S)}$$
B
$$\mathrm{(A)\to(P),(S),(R),(T);(B)\to(S),(T);(C)\to(P),(Q);(D)\to(P),(T),(S)}$$
C
$$\mathrm{(A)\to(Q),(R),(T);(B)\to(P),(T);(C)\to(P),(Q);(D)\to(T),(Q),(S)}$$
D
$$\mathrm{(A)\to(P),(R),(T);(B)\to(Q),(T);(C)\to(S),(Q);(D)\to(P),(Q),(S)}$$
4
IIT-JEE 2009 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1

Match each of the compounds in Column I with its characteristic reaction(s) in Column II.

Column I Column II
(A) $$C{H_3}C{H_2}C{H_2}CN$$ (P) Reduction with $$Pd - C/{H_2}$$
(B) $$C{H_3}C{H_2}OCOC{H_3}$$ (Q) Reduction with $$SnC{l_2}/HCl$$
(C) $$C{H_3} - CH = CH - C{H_2}OH$$ (R) Development of foul smell on treatment with chloroform and alcoholic KOH
(D) $$C{H_3}C{H_2}C{H_2}C{H_2}N{H_2}$$ (S) Reduction with diisobutylaluminium hydride (DIBAL-H)
(T) Alkaline hydrolysis

A
$$\mathrm{(A)\to(P),(Q),(S),(T);(B)\to(Q),(T);(C)\to(P);(D)\to(S)}$$
B
$$\mathrm{(A)\to(Q), (R), (S),(T);(B)\to(S),(T);(C)\to(P);(D)\to(R)}$$
C
$$\mathrm{(A)\to(P),(R),(S),(T);(B)\to(S),(T);(C)\to(P);(D)\to(R), (T)}$$
D
$$\mathrm{(A)\to(P),(Q),(S),(T);(B)\to(S),(T);(C)\to(P);(D)\to(R)}$$
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