Question # 1

Bessemer converter is used in the manufacture of

Choose an answer

Pig iron

Steel

Wrought iron

Cast iron

If pH of buffer of 1 mole dm^-3of HCOOH + 0.1 mole dm^-3HCOONa having pKa = 3.78 is

Choose an answer

1.78

2.78

3.78

4.78

Maximum variable oxidation state is of:

Choose an answer

Mn⁺²

Fe⁺³

Cr⁺¹

a and b

One calorie is equal to

Choose an answer

5.184 J

3.184 J

4.184 J

7.184 J

Two or more similar monomers combine to form:

Choose an answer

Homopolymer

Copolymer

Ter polymer

Thermoplastic polymers

The other name of cross linked polymers is

Choose an answer

Linear polymer

Branched polymer

Inter connected polymers

None of these

Bohr model of atom is contradicted by:

Choose an answer

Planck's quantum theory

Pauli's exclusion theory

Heisenberg's uncertainty principle.

All of above.

The bond order O₂molecule is

Choose an answer

1

2

3

Zero

The volume of 0.1 M H₂SO₄required to neutralize completely 40 ml of 0.2 M NaOH solution is

Choose an answer

10 ml

40 ml

20 ml

50 ml

For which system does the equilibrium constant, KC has units of concentration

Choose an answer

Carboxylic acids functional group is:

Choose an answer

----COOH

-----COH

----CO---

----OH

IIB elements (Zn, Cd, Hg) and III B elements (Sc, Y and La) are

Choose an answer

Non typical transition element

Typical transition element

Normal elements

Inner transition element

Solubility of KMnO₄at higher temperature is:

Choose an answer

5%

7%

15%

25%

Carboxylic acids are more acidic than pehnol and alcohol because of

Choose an answer

Intermolecular hydrogen bonding

Formation of dimmers

Highly acidic hydrogen

Resonance stabilization of their conjugate base

Denaturation of protein means the structure of protein is disrupted, indicate which factor foes not denature protein

Choose an answer

Heating protein

pH changes

Oxidising agent

Keeping pH 7.35

Choose an answer

32 g

3.2 g

5.6 g

9.6 g

Shape of CIO₃is

Choose an answer

Triangular pyramidal

Tetrahedral

Triangular planar

Triangular bipyramidal

Which of the following fluorides does not exists?

Choose an answer

NF₅

PF₅

AsF₅

SbF₅

Distillation of calcium salts of acetic acid and formic acids gives acetaldehyde. What compound would be obtained if only calcium salt of acetic acid is distilled

Choose an answer

Formaldehyde

Butyraldehyde

Propionaldehyde

Acetone

pH of water is 7, if 0.01 M NaOH is added, than its pH is

Choose an answer

12

14

zero

10

Which of the following alkyl halides is used as a mathylating agent

Choose an answer

CH₂H₅l

CH₃l

C₂H₅Pr

C₂H₅Cl

One calorie is equal

Choose an answer

4.132 J

760 J

4.184 J

1 J

Cuprous ore among the following is

Choose an answer

Chalcopyites

Azurite

Cuprite

Malachitre

Which is used to identify Cu²⁺ions

Choose an answer

Nitric acid

Sulfuric acid

NaOH

HCI

α-Amino acids are found in protein. Which of the following is anα-amino acid

Choose an answer

Precipitation will occur until the ionic product becomes

Choose an answer

Equal to K_sp

Lesser than K_sp

Greater than K_sp

None of these

The boiling points of alcohols are higher than the corresponding alkanes, This is because

Choose an answer

Of hydrogen bonding existing between molecules of alcohols

Alkanes are dipolar compounds

Alcohols are sweet in taste

Alcohols are soluble in water

A dry alkaline cell has porous Zn anode and MnO₂as cathode the electrolyte used is

Choose an answer

Ca(OH)₂

NaOH

KOH

NH₄OH

Pb has inert pair of electrons:

Choose an answer

One

Two

Three

Four

The bond order for He₂molecule is

Choose an answer

zero

1/2

1

2

In molecules kinetic and potential energies are:

Choose an answer

Definite

Moderate

Indefinite

None of above

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