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Waec chemistry past questions

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WAEC Past Questions and Answers on Chemistry Compiled by ​EduNgr.com From 2016 WAEC Past Questions Question 1 Which of the following sources of energy contributes to green-house effect? Options A) Natural gas B) Nuclear C) Wind D) Solar The correct answer is A. Question 2 A consequence of global warming is Options A) Air pollution B) Flooding C) Increased humidity D) Water pollution The correct answer is A. Question 3 Which of the following metals is common to both brass and bronze? Options A) Aluminium B) Copper C) Lead D) Iron The correct answer is B. Question 4 The alkanol obtained from the production of soap is Options A) Dihydric Alkanol B) Tertiary Alkanol C) Trihydric Alkanol D) Monohydric Alkanol The correct answer is C. Question 5 When a compound ​X ​is heated with concentrated tetraoxosulphate(VI)acid, it produces an alkene. ​X ​ia an Options A) Alkane B) Alkanol C) Alkanoate D) Alkyne The correct answer is B. Question 6 Ripening of fruits is hastened by using Options A) Ethanol B) Ethane C) Ethene D) Ethyne The correct answer is C. Question 7 Which of the following compounds is/are secondary alkanols?i) CH CH(CH )CH OH Ii) CH CH CH(OH)CH Iii) CH C(OH)(CH )CH Options A) I only B) II only C) I and III only D) II and III only The correct answer is B. Question 8 Consider the following reaction equation: C H + 3O 2CO + 2H O . The volume of oxygen at s.t.p that will be required to burn 14g of ethene is [C H = 28; Molar volume of gas at ...
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