Question # 1

Cotton has cellulose in it:

Choose an answer

96%

97%

98%

99%

The molecule of ethane possess which hybrization

Choose an answer

sp³

sp²

sp

sp²d

The empirical formula of a liquid compound is known to be C₂H₄O. What other information is needed to work out its molecular formula?

Choose an answer

The percentage composition of the compound

The relative molecular mass of the compound

The density of the compound

The volume occupied by one mole of the compound

Energy can neither be created nor destroyed, although it can be transformed from one form to another. This is a statement of

Choose an answer

Law of conservation of matter

Law of definite proportions

Law of conservation of energy

None of these

B.O.D is connected with

Choose an answer

Organic matter

Microbes

Mircrobes and organic matter

None of the above

Which following derivative cannot be prepared directly from acetic acid?

Choose an answer

Acetamide

Acetyl chloride

Acetic anhdride

Ethyl acetate

The radius of second Bohr's orbit is

Choose an answer

0.053 nm

0.053/4 nm

0.053 x 4 nm

0.053 x 20 nm

The ionic product of H⁺ions and OH^-in water is called ionization constant of water Kw. The value of Kw at 25°C is

Choose an answer

0.11 x 10^-14

0.30 x 10^-14

1.0 x 10^-14

3 x 10^-14

Eletronegativity difference in C-C bond in alkanes is:

Choose an answer

Zero

Double

Half

4.0

Increasing skin cancer and high mutation rate are due to

Choose an answer

Acid rain

Ozone depletion

CO pollution

CO₂Pollution

Interstitial compounds have

Choose an answer

Half formula

Fixed formula

Indefinite formula

None

When a nitrogeneous base combine with a sugar it is called

Choose an answer

Ribose

Nucleotides

Nucleoside

None

Theα-carbon of 19 out of 20α-amino acids found in protein is chiral or asymmetric. Hence they are optically active. Only one of the 20α-amino acids is not optically active which one is the

Choose an answer

Proline

Glycine

Hitidine

Alanine

Products of coal is:

Choose an answer

Peat

Lignite

Bituminous coal

All above

The reference electrode is made by using

Choose an answer

ZnCl₂

CuSO₄

HgCl₂

Hg₂Cl₂

Which of the following compounds is explosive in nature?

Choose an answer

Phosphorus trichloride

Nitrogen trichloride

Hyponitrous acid

Nitrosyl chloride

Which of the following does not turn Schiff's reagent to pink?

Choose an answer

Formaldehyde

Bezaldehyde

Aceton

Methyl chloride

A transition element is defined as an element of 3d series

Choose an answer

Which is metal

Which has one stable ion

Which has two stable ions

Which has at least one stable ion with incomplete d-orbital

Molecular orbitals are filled with the available:

Choose an answer

Hund's of rule.

Pauli's exclusion principle.

Aufbau principle.

All of above.

Bakelite is a product formed form

Choose an answer

Reaction of formaldehyde with phenol

Reaction of polyethylene with phenol

Reaction of polypropylene with acid

It is a natural product

Ozone hole is maximum over

Choose an answer

Europe

Antarctica

Asia

Africa

The relative lowering of vapour pressure is equal to the mole fraction of the solute, This law is called

Choose an answer

Henry's law

Raoult's law

Ostwald's law

Arrhenius law

The molarity of the solution containing x grams (NH₄)₂SO₄in 500 cm³of the solution is 0.6 what is x

Choose an answer

39.6

45.1

40.5

42.7

Teflon, styron and neoprene are all

Choose an answer

Copolymers

Condensation polymers

Homopolymers

Monomers

In the reaction of oxalic acid with KMnO₄and H₂SO₄is slow at the beginning but after sometimes the reaction becomes faster due to

Choose an answer

Formation of MnSO₄which acts as 'Auto catalyst

Formation of CO₂which acts as 'Auto catalyst

Formation of K₂SO₄which acts as 'Auto catalyst

Evolution of O₂gas which acts as 'Auto catalyst

Which is an essential constituent of chlorophyll

Choose an answer

Be

Fe

Mg

Ca

In Dow's method, phenol can be made from

Choose an answer

Chlorobenzene

Benzene

Toluene

Benzene sulphonic acid

Acetylene had a characteristic ethereal smell resembling that of

Choose an answer

Ginger

Vinegar

Garlic

Onion

When rate of forward reaction is equal to rate of backward reaction, then the equilibrium established is called

Choose an answer

Chemical equilibrium

Static equilibrium

Dynamic equilibrium

None of these

Among O, C, F, Cl, Br, the correct order of increasing radii is

Choose an answer

F O C Cl Br

F C O Cl Br

F Cl Br O C

C O F Cl Br

Isopropyl alcohol on oxidation forms

Choose an answer

Acetone

Ether

Ethylene

Acetaldehyde

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