Question # 1

Specific conductivity of a solution

Choose an answer

Increases with dilution

Decreases with dilution

Remains unchanged with dilution

Depends on mass of electrolyte

Which is not property in ether:

Choose an answer

Very weak hydogen bonding

High b.p

Slightly soluble

Inflammable

Alkali metals react violently with halogens to form

Choose an answer

Hydrides

Halides

Anyhydrides

None of these

Hybridization of each carbon atom in benzene ring is

Choose an answer

sp hybridized

sp²hybridized

sp³

dsp²

Which reagent could be used to distinguish between CH₃CH(OH)CH₂CHO and CH₃COCH₂CH₂OH

Choose an answer

Acidified potassium dichromate

Dilute sulphuric acid

2,4-dinitrophenylydrazine

Fehling's reagent

Which of the following compounds gives trichoromethane on distilling with bleaching power?

Choose an answer

Methanal

Phenol

Ethanol

methanol

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

Which of the hydrogen halides has the highest percentage of character?

Choose an answer

HCl

HBr

HF

Hl

Which decolourizes the colour of Br₃

Choose an answer

CH₄

CH_3-CH₃

CH_3-CH_3-CH₃

CH₂₌CH₂

Which of the following half molar solutions will have lowest freezing point

Choose an answer

Solution of non-volatile, none electrolyte

Solution of non volatile, weak electrolyte

Solution of non volatile strong electrolyte

Solution of volatile, non electrolyte

An organic acdi having molecular formula C₂H₄O₂is

Choose an answer

Formic acid

Acetic acid

Oxalic acid

Propionic acid

Use of ethanol as:

Choose an answer

Drink

Solvent and fuel

In beverage

All of these

In which of the following theories the hybridizationis considered

Choose an answer

Vsepr

Lewis

Molecule orbital

Valence bond

Formaldehyde is used to make

Choose an answer

Plastics

Medicine

Antiseptic

All of these

ΔH is equal to

Choose an answer

E + PV

E + PΔV

ΔE + P

ΔE + PΔV

The de-Brogile wavelength of a particle with mass 1g and velocity 100 m/s is

Choose an answer

6.63 x 10^-33m

6.63 x 10^-34m

6.63 x 10^-35m

6.65 x 10^-35m

What will be the molarity of solution if 103 g (NH₄)₂SO₄is dissolved per 600 cm³of water

Choose an answer

2.32 M

3.32 M

4.32 M

1.30 M

Steel may be manufacture by two processes which two are correct

Choose an answer

Open hearth process and besemer process

Open hearth process and Haber process

Bassemer process and Haber process

Contact process and Haber process

Primary and secondary alcohols on action of red hot copper give

Choose an answer

Aldehydes and ketones respectilvely

ketones and aldehydes respectively

Only aldehydes

Only ketones

Property of transition element is :

Choose an answer

Low m.p and b.p

Parramagnetism

Oxidation state

Low binding energies

Alcohals can be distinguished using test:

Choose an answer

Lucas

Tollen's

Koib's

William's

Alkyl halides in which a halogen atom is bonded to that carbon atom which directly bonded with one hydrogen atom is called

Choose an answer

Primary alkyl halides

Secondary alkyl halides

Tertiary alkyl halides

Quaternary alkyl halides

K,Ca and Li metals may be arranged in decreasing order of their reduction potential as :

Choose an answer

Li, k, Ca

Ca, K, Li

Li, Ca, K

K, Ca, Li

A bond between two atoms may be obtained by sharing of electrons such a bond is called

Choose an answer

An ionic bond

A coordinate bond

A dative bond

A covalent bond

Solvent extraction is an unstable,Process and it is controlled by:

Choose an answer

Alcohol extraction

Petrol extraction

Phenol extraction

Ether extraction

The geometry of 4 sp³hybrid orbitals on an atom is

Choose an answer

Square planar

Tetrahedral

Trigonal planar

Linear

When ethylene glycol is heated with acidified potassium permanganate, the main organic compound obtained is

Choose an answer

Oxalic acid

Glyoxal

Formic acid

Ethanol

The process in which orbitals of different energies and shapes mix with each other to give equivalent hybrid orbitals is called

Choose an answer

Isomerization

polymerization

Hybridization

Resonance

Vinegar made form cane sugar, now a days synthetically contains

Choose an answer

Citric acid

Lactic acid

Acetic acid

Palmitic acid

95% alcohol is called

Choose an answer

Rectified spirit

Spirit of wine

Spirit

Methylated

Sodium hexametaphophate is known as

Choose an answer

Calgon

Permutite

Natalite

Nitrolim

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