Question # 1

Gooch crucible is made of.

Choose an answer

Glass

Paper

Teflon

Procelain

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

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

Choose an answer

The size of paper used

Their R_fvalues

Their partition coefficients

The polarity of solvent used

During paper chromatography, the stationary phase is.

Choose an answer

Solid

Liquid

Gas

Plasma

One of the following substances is not used as a drying reagent in a desiccator

Choose an answer

Cons. H₂SO₄

P₂O₅

Silica gel

50% KOH

In paper chromatograghy the point at which the solvent rises to maximum extent is called

Choose an answer

Event

Chromatogram

Solvent front

Base line

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

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

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

Large value of distribution coefficient K means.

Choose an answer

Component of solute dissolved large in mobile phase

Components of solute do not dissolve in mobile phase

Components of solute remains at original spot

All statements are correct

In order to have good crystals of a substance the temperature of the system at the time of preparation of solution should be

Choose an answer

Around 0°C

Around room temperature

Sufficiently more than room temperature

Just above the room temperature

Solvent extraction method is particularly useful technique for separation when the product to be separated is

Choose an answer

Non-volatile or thermally unstable

Volatile or thermally unstable

Non-volatile or thermally stable

Volatile or unstable

Which one of the following methods will be used to separate the mixture of NaCl and sand.

Choose an answer

Chromatography

Solvent extraction

Sublimation

Filtration

During chromatography strip should be dipped into solvent mixture to a depth of.

Choose an answer

3-4 mm

4-5 mm

5-6 mm

6-7 mm

Compound which undergo sublimation is

Choose an answer

KMnO4

CaCO3

NH4Cl

Na2CO3

Chromatography is the process which involve the distribution of a solute between

Choose an answer

Two mobile phases

A stationary phase and mobile phase

Two stationary and two mobile phases

Two stationary phases

Which is not used as drying agent in a desiccator.

Choose an answer

Cacl2

NaCl

P2O5

Salica Gel

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