Question # 1

Lactic acid is a molecule which shows

Choose an answer

Epimersim

Tautomerism

Opical isomerism

Metamerism

Which of the following statement is not correct n respect of Arrhenius concept.

Choose an answer

The concept is applicable only for aqueous systems.

Neutralization takes place in aqueous mediam only

TH+ ion cannot remain as such in water

This concept is applicable for non aqueous system only.

Inorganic acids (HCl, HBr, HNO3 etc) have K value.

Choose an answer

< 1

>1

>10

<10

Glycine reacts with nitrous acid to form

Choose an answer

Methyl amino

Acetic acid

Zwitter ion

Glycollic acid

The function of boiling the sodium extract with conc. HNO3 before testing the halogens is

Choose an answer

To make solution clear

To make the solution acidic

To bring common ion effect

To destroy CN- and S2- ion

Enfleurage process is used to extract the essential oils from

Choose an answer

Back of plant

Seeds of plant

Leaves of plant

Flowers of plant

Coagulation of protein on treatment with heavy motal salts or heating is called.

Choose an answer

Decolorisation

Denaturation

^{Sedimentation process}

Reversible precipitation

Which of the following alkyl halide undergoes nucleophilic substitution reaction via the formation of a carboncation.

Choose an answer

1-chloro -2 methyl propane

2- chlro-2-methyl propane

2- chloro butane

1-Chloro, 3,3- dimethyl pentane

The addition of HCl in the presence of poroxule does not follow anti Markovnikov's rule because.

Choose an answer

HCl bond is too strong to be broken homolytically

Cl atom is not reative enough to add on to a double bond

Cl combines with H to give back HCl

HCl is a reducing agent.

Which is not true about polymers.

Choose an answer

Polymers do not carry any charge

Polymers have high viscosity

Polymers scatter light

Polymers have low molecular weight

The bond length of C = C is

Choose an answer

1.20 A^o

1.34 A^o

1.54 A^o

1.68 A^o

All steroids on heating wish solenium give

Choose an answer

phenanthrene

Cholesterol

Diels hydrocarbon

Isoprene

Cytosine a pyrimidine base pairs with

Choose an answer

Guanine

Thymine

Adenine

Any of these

C is -2 butene on reaction with bromino give 2,3 -dibromobutane which is

Choose an answer

Recemic mixture

Meso isomer

Dextoroisomer

Levoisomer

Which of the following dye is used an antiseptic .

Choose an answer

Methyl orange

Mercurochrome

Alizarin

Bismarck brown

D(+) glyceraldebydes has the absolute configurtion.

Choose an answer

E-

S-

E-

Z-

1-Butyne on oxymereuration -demercuration would give.

Choose an answer

Butanone

Butanal

Propanol and methanol

Propanoic acid and formic acid

A molecule is said to be chiral

Choose an answer

If it contains plane of symmetry

If it contains centre of symmetry

If it can be superimposed on its mirror image

None of the above

The number of hydrogen bonds boding A _____ T pair is

Choose an answer

1

2

3

4

An organic liquid (X) containing C, H and H has a pleasent odour with a boiling point of 78 oC. On boiling X with conc. H2SO4 a colourless gas is produced which decolourless bromine water and alkaline KMnO4 One mole of this gas also takes one mole of H2. The organic liquid (X) is.

Choose an answer

n-C3H7OH

iso-C3H7OH

C2H5CHO

CH3CH2OH

Which of the following haloacids is stronger acids.

Choose an answer

FCH2COOH

ClCH2COOH

Br CH2COOH

ICH2COOH

More Classes

Other Links

PPSC Chemistry Part II Organic 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