Question # 1

Calcium carbide reacts with water to produce

Choose an answer

Acetylene

Methane

Ethylene

Ethane

Ca, Mg, Be, Ba, belong to the same group, the order of their ionization energy values is

Choose an answer

Be > Mg> Ca > Ba

Ba > Ca > Mg > Be

Ca > Mg > Be > Ba

Ba > Mg > Ca > Be

Which of the following particles has longest wavelength, if they have same speed:

Choose an answer

Proton.

Neutron.

Electron.

Positron.

96500 C of electricity liberates from CuSO₄solution

Choose an answer

63.5 g of Cu

31.75 g of Cu

96500 g of Cu

100 g of Cu

denaturing of alcohol is done by adding methanol in ethanol:

Choose an answer

10%

20%

30%

40%

Shielding effect intervening electrons causes

Choose an answer

Decreases in atomic radii in a period from right to left

Increase in atomic radii in a period from left to righ t

Decrease in atomic radii down the group

Increase in atomic radii down the group

The chloride of element Q is hydrolysed by water to form an acidic solution and its oxide reacts with acid to form a salt.

What cold be the element Q

Choose an answer

Magnesium

Aluminium

Silicon

Phosphorus

The shape of gaseous SnCl₂is

Choose an answer

Tetrahedral

Linear

Angular

T-shaped

The electron affinity of chlorine may be represented by the equation

Choose an answer

Alcohol can be denaturated by adding:

Choose an answer

Acetone

Methanol

Pyridine

All

Which of the followings is not a nulceophile

Choose an answer

OH^-

NH₃

C₂H₅O^-

Br₂

Which of the following is not aromatic hydrogencarbon

Choose an answer

Benzene

Naphthalene

Toluene

Cyclohexene

A substance which increases the rate of a reaction without being consumed during the reaction is called

Choose an answer

An autocatalyst

A catalyst

A negative catalyst

All of these

Diethyl ether is obtained by Williamsons synthesis using

Choose an answer

Ethanol + Na + C₂H₅Br

Ethanol + Mg + C₂H₅Br

Methanol + Na + CH₃Br

Methanol + Mg + CH₃Br

Cathode rays emitted from cathode are

Choose an answer

Canal rays

Protons

Electrons

Positrons

The order of reactivity of an alkyl halide (R-X) for a particular alkyl group is

Choose an answer

Iodide > bromide > chloride

Chloride > bromide > iodide

Bromide > chloride > iodide

Bromide > iodide > chloride

Which one of following is not monocyclic aromatic hydrocarbon

Choose an answer

Benzaldehyde

Benzoic acid

Benzene sulfonic acid

Biphenyl

LiOH ______ soluble than NaOH

Choose an answer

More soluble

Less soluble

Equally soluble

None

The acid present in the stings of bees and wasps in

Choose an answer

Acetic acid

Formic acid

Formalin

Formaldehyde

Non-formation of menisus by Hg in presence of O₃is due to the formation of

Choose an answer

Mercuric oxide

Mercurous oxide

Mercuric chloride

Mercurous chloride

What is the nature of SO₂

Choose an answer

Basic

Strongly acidic

Weakly acidic

Amphoteric

Potassium hexacyanoferrate (II) has the formula

Choose an answer

K₄[Fe(CN)₆]

K₃[Fe(CN)₆]

K₂[Fe(CN)₆]

K [Fe(CN)₆]

The quantum number which describes the shape of the orbital is

Choose an answer

Principle quantum number

Spin quantum number

Azimathal quantum number

Magnetic quantum number

Lysine is ______ amino acid

Choose an answer

Acidic

Basic

Natural

None of these

Alkaline earth metals are usually

Choose an answer

Reducing agent

Oxidizing agent

Amphoteric

Acidic

The structure of white phosphorus is

Choose an answer

Square planar

Pyramidal

Tetrahedral

Trigonal planer

Lactic acid on oxidation by alkaline potassium permanganate gives

Choose an answer

Tartaric acid

Pyruvic acid

Cinnamic acid

Propionic acid

The concentration units independent of temperature would be

Choose an answer

Normality

Mass-volume precent

Molality

Molarity

The elimination of HX from adjacent carbon atoms is called

Choose an answer

Halogenations

Hydrohalogenation

Dehydrohalogenation

Hydration

Some of the elements of a period show similar behavior with the elements of next group in next period this is called

Choose an answer

Vertical relationship

Oblique relationship

Diagonal relationship

None

Which of the following molecules have sp³hybridized carbon

Choose an answer

CH₄

C₂H₄

C₂H₂

CO₂

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