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Chemical Reactions MCQ

Chemical Reactions

1. Hazardous substances while toxins are .

Personal biases and preferences as well as logic.

They are becoming resistant to antibiotics.

A minimal amount is taken into the body.

Are dangerous substances; poisonous substances

Answer

Correct Answer: Are dangerous substances; poisonous substances

Note: This Question is unanswered, help us to find answer for this one

2. Tooth fillings are often made of gold or porcelain because these materials are ______.

Explosive

Visually pleasing

Non-reactive

Chemically similar to teeth

Answer

Correct Answer: Non-reactive

Note: This Question is unanswered, help us to find answer for this one

3. The oxidation number of hydrogen when it is in a compound other than a hydride is _____.

Answer

Correct Answer: +1

Note: This Question is unanswered, help us to find answer for this one

4. The ground-state electron configuration of the element ________ is [kr]5s14d5.

All of these

Answer

Correct Answer: Mo

Note: This Question is unanswered, help us to find answer for this one

5. The concentration of iodide ions in a 0.193 m solution of barium iodide is __________.

0.193 M

0.386 M

0.0965 M

0.579 M

0.0643 M

Answer

Correct Answer: 0.386 M

Note: This Question is unanswered, help us to find answer for this one

6. Environmental bioremediation using bacteria is least effective on _____.

Heavy metals

Number of digits

Decimal point

None of these

Answer

Correct Answer: Heavy metals

Note: This Question is unanswered, help us to find answer for this one

7. Of the possible bonds between carbon atoms (single, double, and triple), ________.

A triple bond is longer than a single bond.

A double bond is stronger than a triple bond.

A single bond is stronger than a triple bond.

A double bond is longer than a triple bond.

A single bond is stronger than a double bond

Answer

Correct Answer: A double bond is longer than a triple bond.

Note: This Question is unanswered, help us to find answer for this one

8. Oxidation cannot occur without ________.

Oxygen.

Water.

Reduction.

Air.

Acid

Answer

Correct Answer: Reduction.

Note: This Question is unanswered, help us to find answer for this one

9. In general, as activation energy increases, reaction rate ________.

Goes down if the reaction is exothermic.

Goes down if the reaction is endothermic.

Stays the same regardless of whether the reaction is exothermic or endothermic.

Goes down regardless of whether the reaction is exothermic or endothermic.

None of the above

Answer

Correct Answer: Goes down if the reaction is endothermic.

Note: This Question is unanswered, help us to find answer for this one

10. The rate law of a reaction is rate = k[d][x]. the units of the rate constant are ________.

Mol L⁻¹ s⁻¹

L mol⁻¹ s⁻¹

Mol2 L⁻² s⁻¹

Mol L⁻¹ s⁻²

Answer

Correct Answer: L mol⁻¹ s⁻¹

Note: This Question is unanswered, help us to find answer for this one

11. The electron configuration [kr]4d10 represents __________.

Sr+2

Sn+2

Te+2

Ag+1

Answer

Correct Answer: Ag+1

Note: This Question is unanswered, help us to find answer for this one

12. _c2h6(g)+o2(g)→co2(g)+__h2o(g)

2,7,4,6

3,4,5,6

6,4,7,2

7,2,6,4

Answer

Correct Answer: 2,7,4,6

Note: This Question is unanswered, help us to find answer for this one

Chemistry MCQs | Topic-wise

MCQ on Acid/Base Study	MCQ on Atmospheric Chemistry
MCQ on Atomic Structure And Chemical Bonding	MCQ on Biological Chemistry
MCQ on Chemical Reactions	MCQ on General Chemistry
MCQ on Inorganic Chemistry	MCQ on Nuclear Chemistry
MCQ on Organic Chemistry	MCQ on Physical Chemistry
General Chemistry MCQs

Chemical Reactions MCQ

1. Hazardous substances ______________ while toxins are ______________.

2. Tooth fillings are often made of gold or porcelain because these materials are ______.

3. The oxidation number of hydrogen when it is in a compound other than a hydride is _____.

4. The ground-state electron configuration of the element ________ is [kr]5s14d5.

5. The concentration of iodide ions in a 0.193 m solution of barium iodide is __________.

6. Environmental bioremediation using bacteria is least effective on _____.

7. Of the possible bonds between carbon atoms (single, double, and triple), ________.

8. Oxidation cannot occur without ________.

9. In general, as activation energy increases, reaction rate ________.

10. The rate law of a reaction is rate = k[d][x]. the units of the rate constant are ________.

11. The electron configuration [kr]4d10 represents __________.

12. ___c2h6(g)+____o2(g)→____co2(g)+____h2o(g)

1. Hazardous substances while toxins are .

12. _c2h6(g)+o2(g)→co2(g)+__h2o(g)