The poisonous gas evolved in Bhopal tragedy from the pesticide plant of Union Carbide Co. was:

(1) CO                   

(2) methyl isocyanate

(3) phosgene         

(4) chloropicrin

Oil of winter green and salol are the esters of:

1. salicylic acid

2. lactic acid

3. acetic acid

4. sulphanilic acid

Sulphaguanadine is used for:

(1) dysentery           

(2) urinary infections

(3) antiseptic           

(4) antipyretic

The correct statement among the following about Saccharin is -

1. It is also known as Ortho-sulphobenzimide

2. It is 550 times sweeter than sugar.

3. It is used as a sweetening agent.

4. All of the above.

Which of the following is an example of basic dye ?

(1) Alizarin

(2) Malachite green

(3) Indigo

(4) Orange I

Which of the following is not a chromophore?

(1) —N=N—

(2) —NO

(3) —NO₂

(4) —NH₂

Which of the following groups is not an auxochrome ?

(1)-N(CH₃)₂

(2)-OH

(3)-OCH₃

(4) $>\mathrm{C}=\mathrm{N}$

The compounds used to fix a dye to fabric is known as:

(1) mordant                     

(2) azeotrope

(3) bleaching agents         

(4) lake

Which one is disperse dye?

(1) Congo red

(2) Alizarin

(3) Celliton

(4) None of these

Red ink is prepared from :

(1) Phenol

(2) Aniline

(3) Congo red

(4) Eosin