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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 11:

How many grams of hydrogen gas will be liberated when 6g of magnesium ribbon dissolves in 500cm³ of 6M HCl?
(Mg=24, H=1, Cl=35.5)

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A 1.2 g
B 0.7 g
C 0.5 g
D 0.3 g
E 0.12 g

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Question 12:

Which of the following statements is an exception in the assumptions of the kinetic theory of gases?

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A Gases are composed of many elastic particles
B The particles are of negligible size
C The particles are in constant random motion
D The particles are of negligible mass
E The particles collide with each other

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Question 13:

Which of the following statements is true?

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A Metals conduct electricity while non-metals do not
B Metals have high density, non-metals have low density
C Metals form basic oxides, non-metals form acidic oxides
D In the electro chemical series, metals are above hydrogen while non-metals are below hydrogen
E Metals lose elections while non-metals gain electron during normal reactions

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Question 14:

The boiling point of water is higher than that of methanol because?

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A Water is oxide while methanol is an alcohol
B Inter molecular forces in water are stronger than those in methanol
C Water is an inorganic compound while methanol is organic
D Water is an ionic compound while methanol is a covalent compound
E Water is more reactive than methanol

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Question 15:

Chlorine, bromine and iodine resemble each other in that all?

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A Dissolve in alkalis
B React violently with hydrogen without heating
C Displace each other from solutions of their salts
D Are gases
E Are liquids

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