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Quiz about Organic and Inorganic Chemistry
Quiz about Organic and Inorganic Chemistry

Organic and Inorganic Chemistry Quiz


This quiz covers both organic and inorganic chemistry. Have fun!

A multiple-choice quiz by Garhobbs. Estimated time: 6 mins.
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Author
Garhobbs
Time
6 mins
Type
Multiple Choice
Quiz #
60,803
Updated
Dec 03 21
# Qns
10
Difficulty
Difficult
Avg Score
4 / 10
Plays
2423
- -
Question 1 of 10
1. Which compound, when added to aqueous iron(II) sulphate, takes part in a redox reaction? Hint


Question 2 of 10
2. Copper(II) oxide speeds up the decomposition of aqueous hydrogen peroxide under room conditions. What would be seen in a test tube once the decomposition of aqueous hydrogen peroxide using copper(II) oxide is complete? Hint


Question 3 of 10
3. Copper(II) chloride cannot be prepared by reacting dilute hydrochloric acid with Hint


Question 4 of 10
4. What is the same for both ethene and poly(ethene)? Hint


Question 5 of 10
5. Although aluminum is a reactive metal, it does not corrode easily. Why is this so? Hint


Question 6 of 10
6. Which of the following mixtures is best separated by the use of a separating funnel? Hint


Question 7 of 10
7. Rubidium is an element in group I of the Periodic Table. Which statement about rubidium is likely to be correct? Hint


Question 8 of 10
8. When aqueous ammonium chloride was heated with aqueous Y, a pungent gas which turned moist red litmus paper blue evolved. Which ion must have been present in Y? Hint


Question 9 of 10
9. Which of the following compounds share the same type of linkage? Hint


Question 10 of 10
10. Which of the following is an endothermic reaction? Hint



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Most Recent Scores
Oct 10 2024 : Guest 99: 2/10
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quiz
Quiz Answer Key and Fun Facts
1. Which compound, when added to aqueous iron(II) sulphate, takes part in a redox reaction?

Answer: potassium manganate(VII)

Aqeuous iron(II) salts act as a reducing agent, while potassium mangante(VII) is an oxidising agent. The end product of the reaction gives a colorless or pale yellow solution.
2. Copper(II) oxide speeds up the decomposition of aqueous hydrogen peroxide under room conditions. What would be seen in a test tube once the decomposition of aqueous hydrogen peroxide using copper(II) oxide is complete?

Answer: a black solid and a colorless solution

Copper(II) oxide is a catalyst. It remains chemically unchanged at the end of the reaction. Hydrogen peroxide decomposes to become water and oxygen. Since copper(II) oxide is insoluble, a black solid and a colorless solution is formed at the end of the reaction.
3. Copper(II) chloride cannot be prepared by reacting dilute hydrochloric acid with

Answer: copper

Copper is too unreactive to have any reaction with dilute hydrochloric acid.
4. What is the same for both ethene and poly(ethene)?

Answer: empirical formula

The percentage composition of carbon and hydrogen is the same for both ethene and poly(ethene), there is no elimination or addition of any element or compound when forming poly(ethene) from ethene. Thus, empirical formula is the same.
5. Although aluminum is a reactive metal, it does not corrode easily. Why is this so?

Answer: it is protected by a layer of aluminum oxide

Aluminum reacts with oxygen in the air to form a non-porous layer of aluminum oxide that adheres to the metallic surface. This layer is very unreactive and protects the metal from corrosion.
6. Which of the following mixtures is best separated by the use of a separating funnel?

Answer: ethyl ethanoate and water

Ethyl ethanoate is immiscible with water, thus it is best separated using a separating funnel.
7. Rubidium is an element in group I of the Periodic Table. Which statement about rubidium is likely to be correct?

Answer: it forms an alkali with water

Group I metals, known as alkali metals, are the most reactive metals. They form very stable compounds and are not discharged in aqueous state. They can be obtained by electrolysis of its molten compound. They also react vigorously with water to form alkali.
8. When aqueous ammonium chloride was heated with aqueous Y, a pungent gas which turned moist red litmus paper blue evolved. Which ion must have been present in Y?

Answer: hydroxide ion

The gas is ammonia, thus aqueous Y must be an alkali, which therefore must contain the hydroxide ion. Ammonia is highly soluble in solution, thus must be heated to expel it from the solution.
9. Which of the following compounds share the same type of linkage?

Answer: terylene and fats

Terylene and fats share the ester linkage, nylon and proteins share the amide linkage.
10. Which of the following is an endothermic reaction?

Answer: dissolving sodium chloride in water

The energy needed to separate the sodium and chloride ions in the crystal lattice is greater than the energy evolved when the ions form hydrated ions. Heat of solution: +5.4 kJ per mol
Source: Author Garhobbs

This quiz was reviewed by FunTrivia editor gtho4 before going online.
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