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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 31:

Chlorine gas is prepared in the laboratory by

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A Adding concentrated hydrochloric acid to solid manganese (IV) oxide
B Aciding concentrated tetraoxosulphate (VI) acid to solid sodium chloride
C Dropping concentrated hydrochloric acid onto potassium tetraoxomanganate (VI) crystals
D Aciding concentrated tetraoxosulphate (VI) acid to hydrochloric acid

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Question 32:

Metals of the first transition series have special properties which are different from those of groups I and II elements because they have partially filled

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A S orbitals
B P orbitals
C D orbitals
D F orbitals

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Question 33:

Hydrogen can be displaced from a hot alkaline solution by

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A Fe
B Cu
C Ca
D Sn

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Question 34:

Which of the following statements is true of sulphur (IV) oxide?

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A It forms tetraoxosulphate (VI) acid with water
B It is an odourless gas
C It is an acid hybride
D It forms white precipitate with acidified barium chloride

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Question 35:

The salt that will form a precipitate soluble in excess ammonia solution is

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A Ca(NO₃)₂
B Cu(NO_{3[sub])[sub]2}[/sub][/sub]
C Mg(NO_{3[sub])[sub]2}[/sub][/sub]
D Al(NO_{3[sub])[sub]3}[/sub][/sub]

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