ECAT Chemistry Past Papers MCQs
A collection of ECAT Chemistry Past Papers MCQs in chapter wise sequence for online preparation.
Online Preparation of ECAT Chemistry
we have collected most important mcqs from past papers of ECAT Chemistry for the students for online preparation of ecat examination.
1. Optimum
temp for fermentation is
a 15-20Co b 20-25 Co
c 25-30
Co d None
2. Rectified
spirite contain alcohol
a 12% b 16%
c 95% d 100%
3. Best
reagent for oxidation of alcohol is
a Basic chromatic b Basic
dichromatic
c Acid chromatic d None
4. Colour
of lodoform ppt is
a Yellow b Red
c Brown d Brick red
5. In
E1 mechanism product formed is
a Alcohol b Alkane
c Alkene d Ether
6. In
ethyl acetate formation which bond of alcohol is broken
a C-O b C-C
c O-H d C-H
7. 2,4,6
trinitrophenol is __________ product of phenol
a Additive b Substituted
c Eliminated d Oxidative
8. Which
class of compound resemble with structure of water
a Phenol b Alcohol
c Ether d All
9. Which
one is more acidic
a H2O b C6H5-OH
c C2H5OH d CH3COOH
10. In
distillation of alcohol function of calcium oxide
a Increase distillation b Decrease
distillation
c Absorbmoistune d Increase
yield
11. Alcohol
obtained fermentation is only
a 14% b 95%
c 16% d 12%
12. Reaction
of ethanol with acetic acid give
a Ethyl acetate b Acetone
c Ethyl methylester d Both
a, c
13. At
high temperature dehydration of Alcohol produce
a Alkene b Alkyne
c Ether d Ketone
14. Reaction
of alcohol with PCl5 produce acid is
a HCl b H3PO4
c H3PO3 d HNO3
15. Which
alcohol has resistance against oxidation
a 2methyl-2propanol b 2-Propanol
c 1-Propanol d Ethanol
16. In
Ethoxide formation of Na which gas is produced
a Chlorine b Ammonia
c Hydrogen d Oxygen
17. Oxidation
of 2-Propanol produce
a Acetone b Alkene
c Aldehyde d Ether
18. Which
of the following is not alcohol
a C6H5OH b C3H7OH
c C4H9OH d CH3-CH3-OH
19. Formula
of carbolic acid is
a C2H6O2 b C2H4O2
c C6H5OH d CH3COOCH3
20. Ethyl
acetate is produced by reaction of ethanol with
a C3H6O2 b C2H4O2
c CH3-CH2-CH2-OH d All
21. Which
species has more attack on phenol
a Electrophile b Nucleophile
c Substrate d -OH group
22. Which
me has resonance stabilized conjugate base
a Ketone b Alcohol
c Water d Phenol
23. Rectified
spirite contain alcohol about
a 100% b 95%
c 90% d 85%
24. In
fermentation of glucose side product is
a Oxygen b Cao
c CO2 d H2O
25. Which
of following is derivative of Alkanes
a Phenol b Water
c Ether d Alcohol
26. In
formaldehyde carbon is ___________ hybridized?
a SP3 b SP2
c SP d None
27. Which
catalyst is used in Etherification of alcohol
a K2Cr207/conc.H2SO4 b Conc.H2SO4
c Conc.H2SO4/140oC d Conc.H2SO4/180oC
28. Which
shows more hydrogen bonding?
a Water b Alcohol
c Alkane d All same
29. Which
species cannot show dolocalization of pi-electron?
a Water b Alcohol
c Alkanes d All
Download all ECAT Past papers chapter wise from the following link.
No comments:
Post a Comment