Question # 1

Which of the following is not a characteristic of dye.

Choose an answer

It must have suitable colour

It must be able to fix to fibre

It must be fast to wash and lights

It must be highly soluble in water

To complete transfer of a shared pir of electrons to one of the atoms joined by a double or triple bond at the requirement of an attacking reagent is known as.

Choose an answer

Inductive effect

Resonance effect

Eletromeric effect

Stark effect

RNA is involved int eh synthesis of

Choose an answer

Protein

Nucleic acid

Carbohydrates

Fats

The greater stability of bonzyl carbonium ion as compared to t-butyl carbonium ion is due to.

Choose an answer

Inductive effect

Resonance effect

Electrometric effect

All above

The terpenoid present in oil of lemon grass is

Choose an answer

Citral

Geranial

Nerol

a- terpineol

IUPAC name of HCONH2 is.

Choose an answer

Methanamide

Methanoylamine

Ammoethanal

Formanide

The dyes which are produced on the fibre in suit by reactions are known as.

Choose an answer

Mordant dyes

Fast dyme

Ingrain dyes

Disperse dyes

A mordants is substance which in

Choose an answer

Coloured

Leuco -base of a dye

Fixes dye on the fabric

All of these

In which polymerization branching of chain cannot be possible.

Choose an answer

Free radical

Cationic

Anionic

Anionic and Zieglar Natta

The base which in not present in DNA is

Choose an answer

Adenine

Guanine

Thymine

Cytosine

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.

The dye which is a constituent of Skiffs reagent used for detection formaldehyde group is.

Choose an answer

Gentain violet

Megneta

Phenolphthalein

Rosolic acid

Vitamin D1 is chemically known as

Choose an answer

Ergocalciferol

Tocopherol

Aserphthol

Phylloquinone

Which of the following statements is not correct. with respect to resonance.

Choose an answer

The position of atomic nuclei mus be same

The limiting structures must have same number of paired and unpaired electrons.

The energy of the various limiting structures must contribute equally

All above

Which of the following dyes belongs to the group of acridine dyes.

Choose an answer

Acriflavin

Alizarin

Indigotin

Cyanine

For a compound to act as a dye it must have

Choose an answer

A suitable colour

Ability to fix to fibre

Both A and B

None of these

Which of the following case of acid or base strength is not explained by inductive effect.

Choose an answer

Formic acid> acetic acid

Dimethyl amine > trimethyl amine

Dimethyl amine > methyl amine

Chloroacetic acid > acetic acid

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

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

Choose an answer

Citral

Camphor

Menthol

Carvone

The number of hydrogen bonds boding A _____ T pair is

Choose an answer

1

2

3

4

The ease of hydrohalogenation of alkyl halide with alcoholic KOH is.

Choose an answer

3^o > 2^o > 1^o

3^o < 2_o <1^o

3^o > 2^o < 1^o

3^o < 2 ^o > 1^o

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