Question # 1

Vet days are generally applied to the fabric in the form of.

Choose an answer

Mordants

Leuco base

Oxidised base

Dispersed dyes.

Natural gas can be transported through

Choose an answer

Cylinders

Pipes

Barriers

All of above

Example of peseudohalonge group.

Choose an answer

Cyanogen

Thiocyanogen

Selenocyanogen

All above

Which of the following statements is not true for both B and Al

Choose an answer

They burn in oxygen to give oxides at high temperature

Their halides are Lewis acids

They combine with nitrogen to form nitrides

They react with HCl to form chlroides.

Which of the following molecules have centre of symmetry.

Choose an answer

H2O

HCl

CO2

H2SO4

Pick out the incorrect statements for transition metals.

Choose an answer

They have low melting and boiling points

5d-element have higher energies than 3d or 4 d elements

Zr and Hf have almost identical atomic and ionic radii

They form interstitial compounds.

Ground state electronic configuration of valence shell in N2 m lecule is written as (a2s)2, (o*2s)2 , (pi sp)4, (o2p)2, Hence, the bond order of N2 molecule is.

Choose an answer

1

2

3

0

Which of the following factor is involved in band boarding that occur in column chromatography.

Choose an answer

Number of theoretical plates

Eddy diffusion

In phase mass transfer

All above

Which one of the following statements regarding BF3 is not correct.

Choose an answer

It is an ionic compound

It is an electron deficient compound

It is a Lewis acid

It forms adducts

Which of the following pairs does not represent Lowery acid base pair.

Choose an answer

H2O+NH3

H2O +H2O

HCL + H2O

CH3NH2 + BF3

Which of the following pair on aldol condensation followed by dehydration gives methyl vinyl ketone.

Choose an answer

HCHO and CH3COCH3

HCHO and CH3CHO

CH3CHO and CH3CHO

CH3COCH3 and CH3COCH3

Hydrocarbon X (C6H12) on oxidation with hot alkaline (KMnO4) gives a mixture of prop ionic acid and dimethyl ketone. The structure of compound X is

Choose an answer

CH3CH = CHCH2CH2CH3

(CH3)2 C = CH CH2 CH3

CH3CH2CH = CHCH2CH3

(CH3)2 C = C (CH3)2

A terpenoid which has as alcoholic group in the molecule is.

Choose an answer

Citral

Camphor

Menthol

Carvone

Burning of fossil fuels is the main sources of which of the following pollutant.

Choose an answer

Nitrogen oxide

Nitric oxide

Nitrous oxide

Sulphur dioxide

The addition HCl to 2-pentene give

Choose an answer

3-Chloropentane

2- Chloropentyne

2- Chloropentane

2-Chloro-2-methyl butane

The unit cell having dimensions, a = b=c, alpha = beta= gama not equal 90 ^o is known.

Choose an answer

Cubic

Trigonal

Tetragonal

Monoclinic

An indicator for an acid base titration is a

Choose an answer

Weak acid

Weak base

Strong acid

Strong base

Both A and B

The Hall process involves the reduction of Al2O3 to aluminium by

Choose an answer

Carbon

Carbon monoxide

Molecular hydrogen

Electrolysis

Ionic bond are also forces called as.

Choose an answer

Polar bond

Electrovalent bond

None polar bond

Both A and B

In which pair of species, the Lewis formulae contain same number of ion pairs and bond pairs but they are not isoelectronic.

Choose an answer

O2, N2

SO2, O3

PCl3 , BF3

SOCl2, COCl3

The penultimate shell of carbon contains electrons.

Choose an answer

s2

s2p6

s2p6d10

s2p6d8

Increasing oxygen contents in oxyacids leads to.

Choose an answer

An increase in thermal stability

An increase in acid strength

A decrease in oxidizing power

All above

_{Which of the following salt is soluble in water.}

Choose an answer

BaCO3

SrCO3

CaCO3

K2CO3

Which of the following pentahalides is not formed.

Choose an answer

NF5

PF5

AsF5

BiF5

The high oxidizing power of halogens is favored by.

Choose an answer

Low heat od dissociation of X2

A high electron affinity of the atom

A higher hydration energy of the ion

All of above

Steel is an alloy of iron and carbon with limits on the amount of carbon to less than _______ percent.

Choose an answer

2

3

1

4

Select a basic amino acid.

Choose an answer

Glycine

Cystine

Alanine

Lysine

Alkaline hydrolysis of chloroform produces.

Choose an answer

HCCO

HCOO - + CO

H3COH

CHCL2 OH

Which of the following effects best explains that o-nitro phenol is insoluble in water.

Choose an answer

Inductive effect

Resonance effect

Intramolecular H -bonding

Isomeric effect

a- pinene hydrochloride on warming rdarranges to form bornyl chloride.The rearrangement is known as.

Choose an answer

Pinacol pinacolone

Hofinann

Wager Mecrwein

Wolff

If Principal quantum number n = 4 the quantum number l can have calue.

Choose an answer

1,2,3 and 4

0,1,2 and 3

1,2 and 3 only

None of the abvoe

More Classes

Other Links

PPSC Chemistry Full Book 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