131. The combustion reaction, C + O₂ = CO₂, is
Exothermic
Endothermic
Autocatalytic
None of these
✅ The correct answer is option A.
Chemical Process MCQs
132. Which of the following is not an antibiotic?
Penicillin
Streptomycin
Tetracyclin
Quinine
✅ The correct answer is option D.
134. CaSO₄ .1/2 H₂O is known as
Blue vitriol
Plaster of Paris
Gypsum
Zeolite
✅ The correct answer is option B.
135. Margarine is a/an
Fat
Explosive
Plasticiser
Rocket propellant
✅ The correct answer is option A.
136. __________ process is used for producing soda ash.
Chamber
Chance
Tromp
Solvay
✅ The correct answer is option D.
137. Potassium is kept & transported under
Water
Liquid ammonia
Kerosene oil
Alcohol
✅ The correct answer is option C.
138. Unsaturated oils compared to saturated oils have
Lower melting point & higher reactivity to oxygen
Higher melting point & higher reactivity to oxygen
Lower melting point & lower reactivity to oxygen
Higher melting point & lower reactivity to oxygen
✅ The correct answer is option A.
139. In the Solvay process, the product from the calciner is
Light soda ash
Dense soda ash
Sodium bicarbonate
Dehydrated soda ash
✅ The correct answer is option A.
140. The end bleaching agent used to move last traces of colour bodies from the pulp is
Chlorine dioxide (ClO₂)
MgO
SO₂ gas
Mercaptans
✅ The correct answer is option A.