Question # 1

In Friedal-Craft's alkylation besides AlCl3 the other reactants are

Choose an answer

C6H6 + NH3

C6H6 + NH4

C6H6 + CH3Cl

C6H6 + CH3COCl

Which one of the following is not air pollutant gas

Choose an answer

CO

CO₂

NO

SO₂

Purines include

Choose an answer

Adenine

Guanine

Both a and b

None

Air pollution is not caused by

Choose an answer

Pollen grains

Hydroelectric power

Industries

Automobiles

Which of the following does give violet colour with neutral ferric chloride?

Choose an answer

Acetic acid

Salicaylic acid

Formine acid

Benzoic acid

CL₂, N₂ and O_{2 are:}

Choose an answer

Diatomic molecules

Hetero atomic molecules

Poly-atomic molecules

Mono-atomic molecules

Which one of the following metal ions is colourless?

Choose an answer

V²⁺

Cr³⁺

Zn²⁺

Ti³⁺

Li has the lowest reduction potential while the element with highest reduction potential is

Choose an answer

H

F

O

N

The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with the rule

Choose an answer

Hund's rule

Markowvikov's rule

Pauli's exclusion principle

Auf ban principle

Hydroxyl amine is a derivative of::

Choose an answer

Alcohol

Aldehyde

Ammonia

Ketone

Teflon, styron and neoprene are all

Choose an answer

Copolymers

Condensation polymers

Homopolymers

Monomers

During electrolysis, the reaction that takes place at cathode is :

Choose an answer

Reduction

Both (a) and (c)

Oxidation

No reaction occurs

Condensation of aldeydes withα-hydrogen gives:

Choose an answer

Acetal

Ketal

Aldol

Cannizzaro product

Compounds of carbon and hydrogen in which the tetra valency of carbon is fully satisfied are called,

Choose an answer

Saturated

Un-saturated

Magnetic

Para-magnetic

Choose an answer

2-chlorobutanal

alfa-chlorobutanal

2-chlorobutyraldehyde

alfa- chlorobutyraldehyde

Which of the following is not a synthetic polymer?

Choose an answer

Polyethylene

PVC

Nylon

Cellophane

The covalent bonds are

Choose an answer

Unidirectional

Bi-directional

Non-directional

Multi-directional

Stainless steel contains ion and carbon along with

Choose an answer

Ni and Cr

Cr and Co

Co and Mn

Mn and Ni

In a group IIA from top to bottom as the atomic number increases, there is regular decreases in

Choose an answer

Ionic size

Atomic size

Ionization potential

None of these

The relative atomic mass of chlorine is 35.5. What is the mass of 2 mol of chlorine gas

Choose an answer

142 g

71 g

35.5 g

18.75 g

The sample being analyzed is called:

Choose an answer

Electrolyte

Residue

Undue

Filtrate

Poly hydroxyl compounds of aldehyde and ketones are:

Choose an answer

Carbohydrates

Proteins

Fats

Lipids

Choose the correct answer of transition elements?

Choose an answer

Transition elements have low melting points

Transition elements do not have catalytic activity

Transition elements exhibit variable oxidation states

Transition elements exhibit inert pair effect

Choose an answer

Reduction with aluminium isopropoxide in excess of Isopropyl alcohol is called Meerwein Ponndroff-Verley reduction (MPV). What will be the final product when cyclohex-2-enone is selectively reduces in MPV reaction?

Choose an answer

Cyclohexanol

Cyclohex-2-enol

Cyclohexanone

Benzene

All the elements belongs to the 2nd period are

Choose an answer

Normal elements

Transition elements

Stable elements

Halogens

When carbon dioxide is passed through the R - Mg - X is produced

Choose an answer

Any carboxylic acid

Propanoic acid

Propanedioic acid

None of these

The amount of energy required to remove an electron from an atom of an element in the gaseous state is called

Choose an answer

Electron affinity

Electronegatively

Ionization energy

None of these

K_bvalue of NH₄OH is 1.81 x 10^-5and its conjugate acid has K_a= 5.7 x 10^-10pKb of the base is 4.74, pKa of its conjugate acid is

Choose an answer

-4.74

4.74

10

9.26

Organic synthetic or man made polymers are plastics, rubber and fibre. Which is not a synthetic polymer

Choose an answer

Silk

Polyester

Polyvinyl chloride

Nylon

When the 6d orbital is completed the entering electron goes into

Choose an answer

7f

7 s

7 p

7 d

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