Question # 1

Washing soap can be prepared by saponification with alkali of _____ of the following oil.

Choose an answer

Rose oil

Paraffin oil

Groundnut oil

Coconut oil

What is the effect of manganese in cast iron.

Choose an answer

^{To affect the machinability ductility and shrinkage depending on form}

To reduce hardness by combining with sulfur below 0.5% and increase hardness above 0.55

To dioxide molten cast iron

Have no effect

Petrol can be saved by

Choose an answer

Driving at a constant and moderate speed

Ensuring correct type pressure

Switching off the engine at traffic lights

All of these

The fertilizers which provide single nutrient from NPK are called _______ fertilizer

Choose an answer

Straight

compound

Both A and b

None of above

Which of the following cast irons is a high carbon silicon alloy.

Choose an answer

Gray iron

White iron

Malleable iron

Alloy iron

The percentage of nitrogen in ammonium sulphate is__________%

Choose an answer

27

21

23

19

Ammonium nitrate is sold as a mixture with

Choose an answer

Soda Ash

Lime stone

Zinc

None of above

Glass was first made by about________

Choose an answer

40 BC

400 BC

4000 BC

100 BC

in the process of production of soap the soap can be salted out by adding

Choose an answer

Concentrated sulphuric acid

Concentrated potassium hydroxide solution

Concentrated sodium chloride solution

None of above

What group of steels are molybdenum high sped steels.

Choose an answer

Group A

Group D

Group M

Group H

_____ remove the remaining color producing a water white sugar syrup

Choose an answer

Carbon filters

Centrifuge

Annealing

Refining

The main constituent of glass is.

Choose an answer

Silica

Silicon

Magnesia

Alumina

What is the scaling off of a surface in flakes or layers as the result of corrosion?

Choose an answer

Expoliation

Corrosion fatigue

Scaping

Fretting

What is the function of Head Box in paper making machine.

Choose an answer

It dry the paper

It reduces thickness of paper

It makes the surface of paper smooth

It discharge the pulp at the screen of fourdrinier table

Which substance is used as filler or additive in paper making.

Choose an answer

Starch

Glucose

Cellulose

Maltose

What is a method of casehardening involving diffusion in which the steel to be casehardened is machined, heat treated placed in an air tight box and heated to about 1000 ^oF

Choose an answer

Annealing

Normalizing

Carburizing

Decomposition

Which treatment is done with pulp before delivering it to paper making machine.

Choose an answer

Pulp is disperse din water to make slurry

Mechanical refining or heating of the fibers

Addition of chemical additives and recycled fibres from the waste paper plant

All above

A steel cannot qualify for stainless prefix until it has at least how many percent of chromium.

Choose an answer

10 %

20 %

5 %

30 %

The main constituents of ___________ are boron oxide and silica.

Choose an answer

Pyrex glass

Low silica glass

Soda lime glass

Super hard glass

What is the advantage of quench hardening?

Choose an answer

Imporoved strength

Hardness

Wear characteristics

All of the choice

The term 'brass' is very commonly used to designate any alloy primarily of.

Choose an answer

Copper and zinc

Aluminum and iron

Copper and aluminum

Zinc and nickel

More Classes

Other Links

PPSC Chemistry Part VI Applied/Industrial Chemistry Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer