Question # 1

Which of the following species has the highest ionization potential?

Choose an answer

Ne

Al⁺

Mg⁺

Li⁺

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

Choose an answer

Proton.

Neutron.

Electron.

Positron.

Which structure shows a primary alcohol

Choose an answer

If a reactant or product of a reaction absorbs radiation, then physical method for determining the rate of reaction is

Choose an answer

Spectrometry

Refractometry

Conductivity measurement

Optical method

Chlorobenzene on heating with aqueous NH₃under pressure in the presence of cuprous chloride gives

Choose an answer

Benzamide

Nitrobenzene

Aniline

Chloroaminobenzene

95% ethanol is called :

Choose an answer

Rectified ether.

Diesel.

Rectified spirit.

Petrol.

General formula of alcohol is:

Choose an answer

ROH

Ar-OH

R-O-R

Ph-OH

Organic compounds containing halogen atom are called:

Choose an answer

R---OH

R----X

R----NH₂

R----COH

A compound contains 75% carbon and 25% hydrogen, by mass. What is the molecular formula of the compound/

Choose an answer

C₃H₈

CH₄

C₂H₄

C₂H₆

Which gasoline is better?

Choose an answer

Of low boiling point

Of low molecular mass

Of high octane

All of these

Which is used to remove air bubbles form metals?

Choose an answer

B

Be

Mg

Al

The standard enthalpy change in the formation of 1 mole of a compound from its elements in their standard physical states is

Choose an answer

Enthalpy of formation

Enthalpy of atomization

Enthalpy of neutralization

Internal energy change

Palmitic acid & steanic acid ae obtained from process of fats & oils:

Choose an answer

Reduction

Neutralization

oxidation

hydrolysis

Which of the following is fully fluorinated polymer?

Choose an answer

Neoprene

Teflon

Thiokol

PVC

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

Choose an answer

Q and R Q and R

R only Q and R

Q and R R only

Q only R only

Which is not a colligative property?

Choose an answer

Osmotic pressure

Lowering of vapour pressure

Depression of freezing point

Elevation of boiling point

Which compound contains - OH in their molecule

Choose an answer

Alcohol

Phenol

Alcohol and phenol

Ether

When the rate of reaction is entirely independent of the conc. of reaction molecules then order of reaction is

Choose an answer

Zero

First

Second

Third

The orbitals having n + l = 5 are

Choose an answer

2p, 3d,3s

3p, 3d, 5s

3s, 4p, 4d

5s, 4p, 3d

The electronic configuration of an atom/ion can be defined by the following

Choose an answer

Aufbau principle

Pauli's exclusion principle

Hund's Rule

All the above

Which of the following is a molecular diseases?

Choose an answer

Allergy

Cancer

German measles

Sickle cell anemia

The equivalent weight of KMnO₄(formula weight = M) when it is used as an oxidant in neutral medium is

Choose an answer

M

M/2

M/3

M/5

The bond order of individual C - C bond is benzene is

Choose an answer

One

Two

Between one and two

One and two alternately

Bakelite is obtained from phenol by reacting with

Choose an answer

Acetaldehyde

Acetal

Formaldehyde

Chlorobenzene

The cell which generates electricity as a result of spontaneous oxidation-reduction reaction is called

Choose an answer

Electrolytic cell

Nelson's cell

Galvanic cell

Down's cell

A white precipitate ofsilver chlorideimmediately formed on additionof :

Choose an answer

Silver nitrate solution to sodium chloride solution.

Silver chloride solution to sodium nitrate solution.

Silver nitrate solution to potassium chloride solution

Silver nitrate solution to hydrogen chloride solution.

Alkyl halides on treatment with metallic Na give

Choose an answer

Alkynes

Alkenes

Alkanes

Alcohols

In aldol condensation reaction, a double bond is formed between ______ and ______ carbon atoms

Choose an answer

αandβ

αandα

αand Y

None of these

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

Choose an answer

Which of the following human activities are contaminating surface and ground waters

Choose an answer

Pesticides

Septic tanks

Petroleum and natural gas production

All of these

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