Question # 1

Which of the following dye is used an antiseptic .

Choose an answer

Methyl orange

Mercurochrome

Alizarin

Bismarck brown

Co enzyme cna be separated from enzyme by

Choose an answer

Precipitation

Dalysis

Hydrolysis

Distillation

2- Butanol is optically active because a contains

Choose an answer

An asymmetric carbon atom

A plane of symmetry

Centre of symmetry

A hydroxyl group

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

Which type of polymer the Nylon -06 is

Choose an answer

Polyamide

Polyester

Addition

Homopolymer

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

Choose an answer

< 1

>1

>10

<10

Sanger's reagent is

Choose an answer

Carbobenzyloxy chlride

Dimethyl amino sulphonyl chloride

I-Fluoro -2,4-dinitrobnzene

2,4- Dinitrophenyl hydrazine

The decrease in electron density at one position accompanied by a corresponding increase at other position is called.

Choose an answer

Inductive effect

Asymmetric effect

Electromeric effect

Resonance effect

Identify the incorrect statement regarding crystallization from the following.

Choose an answer

It is an important procedure for purifying solids

The impurities are removed by filtering the solution

Crystals are separated by filtration

In crystallization method, the solid is dissolved in a solvvent in which it is soluble at all temperature.

Which one of the following woul dmake an S_N2 mechanism more likely

Choose an answer

Bulky substituents near the halogen

A polar solvent

A tertiary carbocation intermediate

A reactive nucleophile

Albumin is classified as

Choose an answer

Simple protein

Conjugated protein

Lipoprotein

Derived protein

All bond length in benzene are identical due to.

Choose an answer

Resonance effect

Inductomeric effect

Electromeric effect

Mesomeric effect

Lactic acid is a molecule which shows

Choose an answer

Epimersim

Tautomerism

Opical isomerism

Metamerism

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

Choose an answer

Citral

Camphor

Menthol

Carvone

Bromination of n-butane produces.

Choose an answer

I-bromobutane as the major product

2- bromobutane as the major product

Both I - bromo and 2- bromobutane with equal percentage

Both i-bromo and 2-bromo products whose percentage depends upon temperature.

In order to give strength and elasticity natural rubber is heated with.

Choose an answer

Sulphur

Oxygen

Nitrogen

Chlorine

Combination of a -amino acid through which linkages results result in formation of protein

Choose an answer

Ester linkage

Glycosidic linkage

Lactum linkage

Peptide linkage

In which polymer the strength of inter molecular forces is maximum

Choose an answer

Elastomers

Thermoplastic

Fibre

Cross linked polymer

The condensation between formaldehyde and acetaldehyde in the presence of conc. NaOH and heat gives.

Choose an answer

Acrolein

Mixture of CH3OH and CH3COO Na.

Mixture of CH3CH2OH and HCOO - Na+

None of these

Monomer of Nylon -6 is

Choose an answer

Adipic acid

Hexamethylenediamine

Caprolactam

All of these

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

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