WINDOWS NT QUIZ | EXAMIANS

DDT should not be allowed to come in contact with iron (during its manufacture) to

Achieve non-hygroscopic property

Avoid its decomposition

None of these

Prevent sulphonation of the monochlorobenzene by the acid catalyst

TRUE ANSWER : ?
YOUR ANSWER : ?

Fluorescent dyes are added in detergents to

Act as tarnish inhibitor for metals like German silver

Attain distinctiveness from other brands

Act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the whiteness appearance of white fabrics

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Basic oxide is absent in __________ glass.

Pyrex

All of these

Flint

Quartz

TRUE ANSWER : ?
YOUR ANSWER : ?

Transparent soaps (e.g. Pears) are

Metallic soaps with frothing agent and free stearic acid to achieve transparency

Metallic soaps with frothing agent from which glycerine has not been recovered

None of these

Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency

TRUE ANSWER : ?
YOUR ANSWER : ?

Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.

Iron

Vanadium

Alumina

Nickel

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following impurities in feed water for high pressure boiler is the most detrimental?

Silica

Suspended salt

Dissolved salt

Dissolved oxygen

TRUE ANSWER : ?
YOUR ANSWER : ?

Lurgi coal gasifier is a pressurised __________ bed reactor.

Moving

Entrained

Fixed

Fluidised

TRUE ANSWER : ?
YOUR ANSWER : ?

Starting raw material for the manufacture of alum is

Alumina

Ammonium bicarbonate

Bauxite

Gypsum

TRUE ANSWER : ?
YOUR ANSWER : ?

A 'unit process' is exemplified by the

Humidification

Absorption

Distillation

Hydrogenation of oils

TRUE ANSWER : ?
YOUR ANSWER : ?

Blue vitriol is chemically

Aluminium sulphate

Copper sulphate

Ferrous sulphate

Copper nitrate

TRUE ANSWER : ?
YOUR ANSWER : ?