Question

(d
(a) pigmen
(b) mordant (c) modifiers
(d)
2. The compound containing chromophoric groups are called -
(a) auxochrome (b) chromogen (c) azo dye
3. An isolated functional group capable of absorbing radiations is
(a) chromophore (b) chromogen (c) auxochrome (d
4. Picric acid is a -
(a) Nitroso dye (b) Azo dye (c) nitro dye
(c
nntning chamanhorin e
- NH and >C=N-
(a) -N=0.>N-OH
6. Rosaniline is an dye.
(a) vat
(b) sulphur (c) xanthene
7. Crystal violet contains
CH3 groups.
(a) one
(b) two
8. Some of the auxochrome is
(a)-OH
(b)-OCH (c) -NH,
9. In p-nitroaniline --NH2 group acts as
(a) auxochrome (b) chromophore (c) moderant
(c) six​

Answer 1

Answer:

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Answer 2

Answer - The answers to the questions are below -

2.  (b) chromogen

3.  (c) auxochrome

(Explanation - It is a functional group of atoms attached to the chromophore which modifies the ability of the chromophore to absorb light by altering the intensity of absorption)

4.  (c) nitro dye

(Explanation - Also known as yellow dye and used as an antiseptic)

6.  (b) Sulphur

7.  (b) two

8.  (a)-OH

9.  (c) moderant