Free download in PDF Organic Chemistry Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
Primary alcohol is gently heated to produce aldehyde in presence of acidified solution of which of the following compound?
[A]
hydroxide
[B]
dichromate
[C]
ethanol
[D]
ethanal
Answer: dichromate
(2)
In the given reaction, what will be the product P?
[A]
RCH2OH
[B]
RCOOH
[C]
RCHO
[D]
RCH3
Answer: RCHO
(3)
What is the name of the given reaction of preparation of aldehyde?
[A]
Reimer-Tiemann reaction
[B]
Cannizzaro reaction
[C]
Rosenmund reaction
[D]
Reformatsky reaction
Answer: Rosenmund reaction
(4)
Which Catalyst is used in Rosenmund reduction?
[A]
Pd / BaSO4
[B]
Zn-Hg couple
[C]
LiAlH4
[D]
Ni/H2
Answer: Pd / BaSO4
(5)
On heating calcium acetate and calcium formate, the product formed is which of the following?
[A]
CH3COCH3
[B]
CH3CHO
[C]
HCHO+CaCO3
[D]
CH3CHO+CaCO3
Answer: CH3CHO+CaCO3
(6)
In the Rosenmund’s reduction, BaSO4 taken with catalyst Pd acts as which of the following?
[A]
Promotor
[B]
Catalytic poison
[C]
Cooperator
[D]
Absorber
Answer: Catalytic poison
(7)
Catalyst SnCl2/HCl is used in which of the following method of synthesis of aldehyde?
[A]
Stephen’s reduction
[B]
Cannizzaro reaction
[C]
Clemmensen’s reduction
[D]
Rosenmund’s reduction
Answer: Stephen’s reduction
(8)
What is the product X in the following reaction?
[A]
C6H5CH3
[B]
C6H5CH2Cl
[C]
C6H5CHO
[D]
C6H5COOH
Answer: C6H5CHO
(9)
Which of the following gases when passed through warm dilute solution of H2SO4 in presence of HgSO4 gives acetaldehyde?
[A]
CH4
[B]
C2H6
[C]
C2H4
[D]
C2H2
Answer: C2H2
(10)
O3 reacts with CH2=CH2 to form ozonide. On hydrolysis it forms which of the following?