The chemical added to soaps to impart antiseptic properties is : 

1. Salvarsan

2. Bithional

3. Paracetamol

4. Iodine

Which of the following is used in rocket propellants?

(1) H₂(l)

(2) O₂(l)

(3) N₂H₄(l)

(4) All of these

A combination of nitrocellulose and nitroglycerine is a propellant of the type:

1. Hybrid propellant.

2. Mono propellant.

3. Double based propellant.

4. Biliquid propellant.

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

(1) lindane

(2) TNT

(3) malathion

(4) methoxychlor

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

Which of the following is an example of basic dye ?

(1) Alizarin

(2) Malachite green

(3) Indigo

(4) Orange I

Which of the following groups is not an auxochrome ?

(1)-N(CH₃)₂

(2)-OH

(3)-OCH₃

(4) $>\mathrm{C}=\mathrm{N}$

Which one is disperse dye?

(1) Congo red

(2) Alizarin

(3) Celliton

(4) None of these