Chemistry MCQ -9

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Chemistry MCQ -9

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Q: Which pollutant causes eutrophication in rivers?

1 point

A acid rain

B carbon monoxide

C fertiliser

D metal compounds

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Q: The pH of an aqueous solution of hydrochloric acid is 2. What will be the pH of the acid after the addition of 10 g of sodium chloride?

1 point

A 1

B 2

C 7

D 9

Clear selection

Q:In order to form a compound with oxygen, an atom of a Group II element mus

1 point

A transfer two electrons to an atom of oxygen.

B receive two electrons from an atom of oxygen.

C share two electrons with an atom of oxygen.

D bond with two atoms of oxygen.

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Q: Which metal oxide will be reduced by heating with iron?

1 point

A calcium oxide

B lead oxide

C magnesium oxide

D zinc oxide

Clear selection

1 point

A 1

B 4

C 3

D 2

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Q:Which process does not involve the use of a catalyst?

1 point

A the extraction of iron from haematite in a blast furnace

B the manufacture of sulfur trioxide

C the production of ammonia from nitrogen and hydrogen

D the redox reactions that remove combustion pollutants from car exhausts

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Q: How many moles of hydrogen chloride are formed when one mole of methane reacts with a large excess of chlorine in sunlight?

1 point

A 1

B 2

C 3

D 4

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Q:Which pair of substances can be used to prepare a sample of lead(II) chloride when added to water and mixed?

1 point

A lead and sodium chloride

B lead(II) nitrate and sodium chloride

C lead(II) carbonate and sodium chloride

D lead and hydrochloric acid

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Q:Which statement about the elements in the Periodic Table is correct?

1 point

A All the elements in the same group of the Periodic Table have the same reactivity.

B All the elements with four electrons in their outer shells are metals.

C An element in Group II of the Periodic Table would form an ion with a 2– charge.

D Elements in the same period of the Periodic Table have the same number of shells of electrons.

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Q: Which statement shows that graphite and diamond are different forms of the element carbon?

1 point

A Both graphite and diamond have giant molecular structures.

B Complete combustion of equal masses of graphite and diamond produces equal masses carbon dioxide and no other products.of

C Graphite and diamond have different melting points.

D Graphite conducts electricity, whereas diamond does not.

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