OC B-group

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.

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.

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.

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

Benzene diazonium chloride on treatment with sodium sulphite forms

• Benzene sulphite

• Phenyl hydrazine

• Sodium benzene sulphonate

• Benzene sulphonic acid

Benzene diazonium chloride on treatment with benzene in NaOH generate compound

• Diphenyl

• p-hydroxy azobenzene

• Ethyl phenyl ether

• Ethyl benzoate

Benzene diazonium chloride on treatment with boiling water generate compound

• Phenol

• p-hydroxy azobenzene

• Ethyl phenyl ether

• Ethyl benzoate

In chair conformation of cyclohexane, the bonds which are directed straight up (or straight down) the plane of ring, and It lies nearly parallel to the axis of symmetry are called as

• bow-sprit bonds

• flag-pole bonds (fp)

• equatorial bonds

• axial bonds

In boat conformation of cyclohexane, the two C-H bonds coming towards each other on C1 and C4 are called

• bow-sprit bonds

• flag-pole bonds (fp)

• quasi-equatorial (qe) bonds

• quasi-axial (qa) bonds

Benzene diazonium chloride on treatment with ethanol

• Ethyl acetate

• p-hydroxy azobenzene

• Ethyl phenyl ether

• Ethyl benzoate