The antibiotic streptomycin is specific against:

(a) tuberculosis

(b) typhoid

(c) malaria

(d) AIDS

Various phenol derivatives, tincture of iodine (2-3% I₂ in water/alcohol) and some dyes like methylene blue are :

(1) antiseptics

(2) disinfectants

(3) analgesics

(4) antipyretics

The insecticide containing 99% $\mathrm{\gamma }$-isomer of benzene hexachloridc is known as:

(a) lindane

(b) TNT

(c) malathion

(d) methoxychlor

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

(a) CO                    (b) methyl isocyanate

(c) phosgene          (d) chloropicrin

Oil of winter green and salol are the esters of:

1. salicylic acid

2. lactic acid

3. acetic acid

4. sulphanilic acid

Which is correct about saccharin?

1. It is 

2. It is 550 times sweeter than sugar

3. It is used as sweetening agent

4. All of the above

Which of the following is an example of basic dye ?
(a) Alizarin
(b) Malachite green
(c) Indigo
(d) Orange I

Which of the following is not a chromophore?

(a) —N=N—

(b) —NO

(c) —NO₂

(d) —NH₂

Which of the following groups is not an auxochrome ?
(a)-N(CH₃)₂
(b)-OH
(c)-OCH₃
(d) $>\mathrm{C}=\mathrm{N}$

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

(a) mordant                     (b) azeotrope

(c) bleaching agents         (d) lake