Questions and answers for exam Preparation

MCQs

Total Questions : 2307 | Page 225 of 231 pages

Question 2241. For a zero order chemical reaction, the__________________?

Half life period is directly proportion to the initial concentration of the reactants
Plot of products concentration with time is a straight line through the origin
Products concentration increases linearly with time
All A., B. and C.

Discuss Question

Answer: Option D. -> All A., B. and C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2242. In case of physical adsorption, the heat of adsorption is of the order of _____________ kcal/kg mole?

100
1000
10000
100000

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Answer: Option B. -> 1000
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2243. In the reversible reaction of the type, A + B ⇌ AB, in general__________________?

Both forward and backward reactions will be exothermic
Neither of the reactions will be endothermic
The combination reaction will be exothermic, while the dissociation reaction will be endothermic
The combination reaction will be endothermic, while the dissociation reaction will be exothermic

Discuss Question

Answer: Option C. -> The combination reaction will be exothermic, while the dissociation reaction will be endothermic
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2244. An imbalanced chemical reaction equation is against the law of________________?

Multiple proportion
Conservation of mass
Constant proportion
None of these

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Answer: Option B. -> Conservation of mass
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2245. ______________ is the response curve for a step input signal from a reactor ?

S-curve
C-curve
I-curve
None of these

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

Question 2246. For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the ______________ adsorption?

Physical
Chemical
Both A. and B.
Neither A. nor B.

Discuss Question

Answer: Option B. -> Chemical
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2247. A backmix reactor_________________?

Is same as plug-flow reactor
Is same as ideal stirred tank reactor
Employs mixing in axial direction only
Is most suitable for gas phase reaction

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Answer: Option B. -> Is same as ideal stirred tank reactor
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2248. A batch reactor is suitable for__________________?

Achieving cent percent conversion of reactants into products
Large scale gaseous phase reactions
Liquid phase reactions
Obtaining uniform polymerisation products in highly exothermic reactions

Discuss Question

Answer: Option C. -> Liquid phase reactions
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2249. Photochemical reaction rate does not depend significantly on temperature, because____________________?

It is a reversible reaction
It is an exothermic reaction
The energy of reacting molecules exceeds the activation energy by absorption of light
None of these

Discuss Question

Answer: Option C. -> The energy of reacting molecules exceeds the activation energy by absorption of light
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 2250. Radioactive decay follows ______________ order kinetics?