2023 2024 Student Forum > Management Forum > Main Forum

 
  #2  
7th June 2015, 12:26 PM
Super Moderator
 
Join Date: Apr 2013
Re: Chemistry GUJCET Papers

As you want I am here giving you sample paper of the chemistry subject of the GUJCET examination.

Sample paper :

68. Salicyldehyde is obtained when Phenol is heated with CHC13 and aqueous
NaOH. This reaction is known by which name ?
(A) Kolbe - Schmitt reaction
(B) Reimer Tiemann reaction
(C) Hoffmann's reaction
(D) Carbyl amine reaction


69. What is the hybridisation of Carbon and Oxygen in electronic structure of
Ether ?
(A) sp2 and sp2
(B) sp and sp
(C) spa and sp3
(D) spa and sp2


70. What is the oxidation number of carbonyl carbon in Acetophenone ?
(A) Zero (B) + 2
(C) + 1 (D) + 3
71. Which product is obtained on reduction of Methanal in the presence of
concentrated NaOH ?
(A) Formic acid
(B) Methyl alcohol
(C) CO + H2
(D) Formic acid and Methyl alcohol



74. Which compound is known as 'alkyl carbylamine' ?
(A) Ar. NC
(B) Ar . CN
(C) R . NC
(D) R . CN

75. Which type of chemical substance is Disparlure ?
(A) Preservative
(B) Pheromones
(C) Antioxidant
(D) Detergent








Here is the attachment.
Attached Files
File Type: pdf Chemistry paper --GUJCET(1).PDF (575.1 KB, 124 views)


Quick Reply
Your Username: Click here to log in

Message:
Options




All times are GMT +5. The time now is 06:42 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
SEO by vBSEO 3.6.0 PL2

1 2 3 4