Questions and answers for exam Preparation

MCQs

Total Questions : 2307 | Page 224 of 231 pages

Question 2231. In a chemical reaction, _____________________ are conserved?

Ions
Masses
Atoms
Both B. & C.

Discuss Question

Answer: Option D. -> Both B. & C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2232. For a vapour phase catalytic reaction (A + B → P) which follows the Ridel mechanism and the reaction step is rate controlling, the rate of reaction is given by (reaction rate is irreversible, product also absorbs) ?

-rA = (k . PA . PB)/(1 + KAPA + KPPP)
-rA = (k . PA 2 – k1PP)/(1 + KAPA + KPPP)
-rA = (k . PA . PB)/(1 + KAPB + KBPB . KPPP)
-rA = (k . PA . PB)/(1 + KAPA)

Discuss Question

Answer: Option A. -> -rA = (k . PA . PB)/(1 + KAPA + KPPP)
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2233. With decrease in temperature, the equilibrium conversion of a reversible endothermic reaction_________________?

Decreases
Increases
Remain unaffected
Increases linearly with temperature

Discuss Question

Answer: Option A. -> Decreases
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2234. Which of the following will favour the reverse reaction in a chemical equilibrium reaction ?

Increasing the concentration of one of the reactants
Increasing the concentration of one or more of the products
Removal of at least one of the products at regular interval
None of these

Discuss Question

Answer: Option B. -> Increasing the concentration of one or more of the products
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2235. Sulphuric acid is used as a catalyst in the_______________?

Hydrogenation of oils
Gas phase oxidation of SO2 in chamber process
Alkylation of hydrocarbons
None of these

Discuss Question

Answer: Option C. -> Alkylation of hydrocarbons
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2236. An autothermal reactor is_________________?

Most suitable for a second order reaction
Most suitable for a reversible reaction
Completely self-supporting in its thermal energy requirements
Isothermal in nature

Discuss Question

Answer: Option C. -> Completely self-supporting in its thermal energy requirements
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2237. Ionic reactions occur in____________________?

Solid state only
Liquid state only
Solutions
Any state

Discuss Question

Answer: Option C. -> Solutions
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2238. Enzymes are destroyed, when the_______________?

Temperature is very high
Reactant’s concentration is very high
Reactant’s concentration is very low
Reaction rate is independent of the reactant’s concentration

Discuss Question

Answer: Option A. -> Temperature is very high
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2239. ‘N’ plug flow reactors in series with a total volume ‘V’ gives the same conversion as a single plug flow reactor of volume ‘V’ for _______________ order reactions?