
OC B-group
Quiz
•
Chemistry
•
12th Grade
•
Hard
Siddharth Kamat
Used 1+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the case of maize starch if its paste is kept without heating and without agitating for a long time thick lumps are formed which are difficult to be broken by heating and agitation again is called
Adhesivity of the starch.
Keeping Property of the starch.
Congealing property of the starch.
Gelatinization of starch.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When the mixture of starch and water is heated starch granules swell and at a certain high temperature they swell to the maximum extent and occupy completely the whole volume of water thus forming the starch paste this is called
Adhesivity of the starch.
Keeping Property of the starch.
Congealing property of the starch.
Gelatinization of starch.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During the manufacturing of starch from maize the step(s) involves
Soaking in 0.15 to 0.2 % solution of sulphur dioxide, kept at 50 to 55°C for 40 to 48 hours to soften the outer cover.
The softened grains are then lightly crushed between studded plates to open out the kernel and separate the oil-containing germ.
The slurry of starch paste passes into a centrifuge where the lighter gluten floats near the top and the heavier starch sinks down.
All of these.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When two groups attached to olefinic bond are not same and if two groups of highest priority are on the opposite side of the double bond, the isomer is assigned
Cis isomers
Optical isomers
E isomers
Z isomers
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Benzene diazonium chloride on treatment with sodium sulphite forms
Benzene sulphite
Phenyl hydrazine
Sodium benzene sulphonate
Benzene sulphonic acid
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Benzene diazonium chloride on treatment with benzene in NaOH generate compound
Diphenyl
p-hydroxy azobenzene
Ethyl phenyl ether
Ethyl benzoate
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Benzene diazonium chloride on treatment with boiling water generate compound
Phenol
p-hydroxy azobenzene
Ethyl phenyl ether
Ethyl benzoate
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