Question # 1

Which statement about Gooch crucible is incorrect.

Choose an answer

It is made up of porcelain

Quick filtration occur by using suction filtering apparatus

All the chemicals which reacts with paper can be filtered.

Filter medium used in this crucible consists many folds of filter paper only.

Which one of the following substances is not used as drying agent in desiccators.

Choose an answer

Calcium chloride

Phosphorus pentoxide

Silica gel

50% NaCl

The comparative rates at which the solutes move in paper chromatography depends on.

Choose an answer

The size of paper used

Their Rt values solutes

Temp of the experiment

Size the chromate grapic tank

Which one is not example of a sublimate.

Choose an answer

NH4Cl

I

NaCl

Benzoic Acid

The comparative rates at which the solutes move in paper chromatography depend on.

Choose an answer

The size of paper used

Rf values of solutes

Temperature of the experiment

Size of the chromatographic tank used

Chromatography involves the distribution of a solute between.

Choose an answer

Two stationary phases

Two mobile phases

A stationary phase and a mobile phase

Two stationary and two mobile phase.

Which one of the following is not property of a good solvent.

Choose an answer

It should be inexpensive

It should dissolve impurities easily

It should dissolve large amount of solute at boiling point and less amount of solute at low temperature.

It should not react chemically with solute

The crystallization of a solid substance is done from a hot saturated solution. The solution is

Choose an answer

Evaporated rapidly

Cooled very slowly to get good crystals

Cooled rapidly to get excellent crystals

Mixed with another miscible solvent

Solvent extraction is an equilibrium process and it is controlled by.

Choose an answer

Law of mass action

The amount of solvent used

Distribution law

The amount of solute

Drying agent used in crystallization is.

Choose an answer

P2O3

Animal charcoal

KMnO4

Water

Which one of the following substances is used as decolouring agent

Choose an answer

Animal charcol

Concentrated H₂SO₄

CaCI₂

Silica gel

The iodine present in water can be separated by which one of the following techniques

Choose an answer

Sublimation

Chromatography

Filtration

Solvent extraction

One of the following substances does not undergo sublimation

Choose an answer

KMnO₄

Naphthalene

NH₄CI

Iodine

A component having small value of K mostly remains in the.

Choose an answer

Stationary phase

Mobile phase

Chromatographic tank

Solvent

Which one of the following substances is not sublime material.

Choose an answer

Iodine

Benzoic acid

Ammonium chloride

Potash alum

During the process of crystallization, the hot saturated solution.

Choose an answer

Is cooled very slowly to get large sized crystals.

Is cooled at a moderate rate to get medium sized crystals

Is evaporated to get the crystals of the product.

Is mixed with an immiscible liquid to get the pure crystals of the product.

Which substance is nto a dehydrating agent.

Choose an answer

CaCl3

CdCl2

Silica gel

P2O5

The substance used for decolorization of crystalline substance is

Choose an answer

G2O5

Chloroform

Animal charcoal

Soda ash

More Classes

Other Links

Chemistry Fsc Part 1 Chapter 2 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