Question # 1

The detection of functional group is called:

Choose an answer

Numerical analysis

Qualitative analysis

Quantitative analysis

Combustion analysis

The principle quantum number describes

Choose an answer

The distance form the nucleus

The shape of the orbital

The orientation of the orbital

The spin of the electron

A cell in which spontaneous redox reaction generates an electric current is called

Choose an answer

Electrolytic cell

Electrochemical cell

Voltaic or Galvanic cell

Biological cell

Which of the following statement about fluorine is not correct?

Choose an answer

Electron affinity of chlorine is greater than that of fluorine

Bond energy of fluorine is less than that of chlorine

Fluorine cannot be prepared by electrolysis of fused metal fluorides

Fluorine does not form oxoacid

The weight of pure NaOH required to prepare 250 cm³of 0.1 N solution is

Choose an answer

4 g

1 g

2 g

5 g

The quantitative relationship between the substances according to balanced equation describes

Choose an answer

Reversible reactions

Stoichiometry

Limiting reacting

Percentage composition

Which of the following hydrides has the lowest boiling point?

Choose an answer

H₂O

H₂S

H₂S3

H₂Te

Which is a good nucleophile?

Choose an answer

F^-1

Cl^-1

Be^-1

I^-1

Purification of an impure copper is made by electrolytic cell, in which impure copper is anode and pure copper is cathode, and the electrolyte used is

Choose an answer

H₂SO₄

CuSO₄

ZnSO₄

Na₂SO₄

The rate of which the reaction proceeds is directly proportional to the product of the active masses of the reactants is according to

Choose an answer

Law of mass action

Le Chateliers principle

Equilibrium law

Law of constant proportion

Grignard's reagent was prepared in:

Choose an answer

1900

1910

1920

1930

Which of the following is the most suitable method for removing the traces of water from ethanol?

Choose an answer

Reacting with Na metal

Passing dry HCl through it

Distilling it

Reacting with Mg

The apex angle of the folded filter paper is slightly greater is termed as:

Choose an answer

60 degree

30 degree

45 degree

90 degree

Acetic acid is obtained when

Choose an answer

Methyl alcohol is oxidized with potassium permanganate

Calcium acetate is distilled in the presence of calcium formate

Acetaldehyde is oxidized with potassium dichromate and sulphuric acid

Glycerol is heated with sulphuric acid

Which of the following salt is soluble in water

Choose an answer

CaCO₃

CaSO₄

MgSO₄

BaSO₄

Lactic acid on heating with dil. H₂SO₄gives

Choose an answer

Acetic acid

Propionic acid

Acrylic acid

Formic acid

Hydrocarbons are divided into aliphatic, alicyclic and aromatic which structure among the following show an alicyclic hydrocarbon

Choose an answer

If ionic product of a solution is greater than solubility product, the solution is

Choose an answer

Supersaturated

Saturated

Unsaturated

None of these

Coordination number of Pt in [Pt Cl(NO₂) (NH₃)]^2-is

Choose an answer

2-

4

1

6

Which isomers of C₅H₁₁OH gives, on dehydration, the greatest number of different alkenes

Choose an answer

Rectified spirit contains alcohol about

Choose an answer

80%

85%

90%

95%

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Choose an answer

2 - 4 ppm

4 - 6 ppm

2 - 5 ppm

4 - 8 ppm

Which one of the following is a colligative property?

Choose an answer

Surface tension

Osmotic pressure

Viscosity

Refractive index

Two moles of acetic acid are heated with P₂O₅the product formed is

Choose an answer

2 moles of ethyl alcohol

Formic anhydride

Acetic anhydride

2 moles of methyl cyanide

Which element should have the greatest value for electronegativity when combined with hydrogen

Choose an answer

Na

Si

S

Cl

Which of all following compound is not possible

Choose an answer

The use of tetra ethyl lead in petrol as an efficient antiknock agent is being discouraged. Which reason is correct

Choose an answer

It is costly

It damages the engine

Pb is difficult to obtain in bulk quantities

The combustion product, lead, causes air pollutions

Methanol is prepared from CO and H_{2 using catalyst:}

Choose an answer

ZnO

Cr₂O₃

Pt

Ni

5-d series is in the period :

Choose an answer

4th

5th

6th

7th

n-butane and iso butane are an example of

Choose an answer

Chain isomerism

Positional isomerism

Meta merism

Functional group isomerism

Which of the following elements should be the least metallic in character

Choose an answer

Rb

ln

Te

l

More Classes

Other Links

ECAT 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

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