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Chemistry 2020 Jamb Past Questions and Answers

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Chemistry 2020 Jamb Past Questions


Question 26 :



A gaseous metallic chloride MCl consists of 20.22% of M by mass. The formula of the chloride is?
[ M = 27, Cl = 35.5]

A. MCl
B. MCl\(_2\)
C. MCl\(_3\)
D. M\(_2\)Cl\(_6\)


Question 27 :



What quantity of electricity will liberate 0.125 mole of oxygen molecules during the electrolysis of dilute sodium chloride solution?

A. 24,125 C
B. 48,250 C
C. 72,375 C
D. 96,500 C


Question 28 :



Which of the following types of bonding does not involve the formation of new substances?

A. Metallic
B. Covalent
C. Co-ordinate
D. Electrovalent


Question 29 :



An organic compound that does not undergo a reaction with both hydrogen cyanide and hydroxylamine can be?

A. Alkene
B. Alkanal
C. Alkanone
D. Alkanoic Acid


Question 30 :



The substance often used for vulcanization of rubber is?

A. Chlorine
B. Hydrogen peroxide
C. Sulphur
D. Tetraoxosulphate(vi) acid






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