25-minute Test : Part XIII Industrial Chemistry

25-minute Test : Part XIII Industrial Chemistry

9th - 12th Grade

20 Qs

quiz-placeholder

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25-minute Test : Part XIII Industrial Chemistry

25-minute Test : Part XIII Industrial Chemistry

Assessment

Quiz

Chemistry

9th - 12th Grade

Hard

Created by

Chemistry Aristo

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Vitamin C is an oxygen-rich carbon compound. The structure of it is shown in the diagram. Which of the following statements concerning vitamin C is/are correct?

(1) Its chemical name is ascorbic acid.

(2) It can be produced from glucose by fermentation using yeast.

(3) Its molecules have one chiral carbon atom.

A. (1) only
B. (2) only
C. (1) and (3) only
D. (2) and (3) only

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The decomposition of nitrogen dioxide to nitrogen monoxide and oxygen is a second order reaction. The rate equation is: rate = k[NO₂(g)]², where k represents the rate constant. Given that the unit of the reaction rate is mol dm⁻³ s⁻¹, what is the unit of the rate constant?

A. s⁻¹
B. mol dm⁻³ s⁻¹
C. mol⁻² dm⁶ s⁻¹
D. mol⁻¹ dm³ s⁻¹

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which of the options is the concentration-time graph for a zeroth order reaction that involves only one reactant, X?

A
B
C
D

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Three trials of an experiment were performed under the same experimental conditions to study the kinetics of the following reaction:

X(aq) + Y(aq) → Z(aq)

The table shows the data obtained. Which of the following is the rate equation of this reaction?

A. Rate = k[X(aq)][Y(aq)]²

B. Rate = k[X(aq)][Y(aq)]

C. Rate = k[Y(aq)]

D. Rate = k[X(aq)]

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following statements explains why the rate of a gaseous reaction increases as the temperature increases?
A. The volume of the reaction system increases.
B. The number of gaseous particles in the system increases.
C. The fraction of particles with kinetic energy greater than the activation energy increases.
D. The fraction of particles colliding in the proper orientation increases.

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

An experiment was carried out to study the kinetics of the fermentation of a sugar solution in the presence of an enzyme. The table shows the concentration of the sugar solution at three different times during the experiment. Which of the following statements about the fermentation is correct?

A. The concentration of the sugar solution decreases uniformly with time.
B. The concentration of the sugar solution decreases more quickly as the reaction proceeds.
C. The rate of the fermentation is a constant throughout the reaction.
D. The rate of the fermentation decreases as the concentration of the sugar solution decreases.

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Consider the reaction as shown. Experimentally, the order of reaction with respect to I₂(aq) is zero. Which of the following statements concerning the reaction are correct?

(1) The concentration of I₂(aq) decreases linearly with time.

(2) The rate of change in concentration of I₂(aq) remains constant throughout the reaction.

(3) Increasing the concentration of I₂(aq) will increase the rate of the reaction.

A. (1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D. (1), (2) and (3)

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