Chemistry, 2015, JAMB Exam, Exam, Paper 1 | Objectives

Paper Info

Year :

2015

Title :

Chemistry

Exam :

JAMB Exam

Paper 1 | Objectives

51 - 60 of 64 Questions

#	Question	Ans
51.	The substance that is used in the steel industry for the removal of carbon. Sulphur and phosphorus impurities from pig iron is A. oxygen B. chlorine C. nitrogen D. hydrogen Show Content Detailed Solution There is an explanation video available below.	A
52.	If glucose is heated with concentrated tetraoxosulphate(vi)acid, it will be dehydrated to? A. carbon B. carbon(iv)oxide C. ethane D. ethanol Show Content Detailed Solution Carbon concentration of 4 will not give a precipitate heating. Option B,C,D will not be dehydrated There is an explanation video available below.	A
53.	Which of the following compounds can be represented by the molecular formula C2 H6O? A. propanal B. ethanol C. methanoic acid D. glucose Show Content Detailed Solution There is an explanation video available below.	B
54.	What is the pH of 0.00lmoldm³ solution of sodium hydroxide A. 14 B. 13 C. 12 D. 11 Show Content Detailed Solution There is an explanation video available below.	D
55.	N₂O_4(g)→ 2NO_2(g) In the endothermic reaction above, more products formed will be favored by A. A constant values B. an increase in pressure C. a decrease pressure D. a decrease volume Show Content Detailed Solution There is an explanation video available below.	C
56.	Chlorine gas turns damp starch-iodide paper A. pink B. colourless C. red D. dark blue Show Content Detailed Solution There is an explanation video available below.	D
57.	Chlorine consisting of two isotope of mass number 35 and 37 in the ratio 3:1 has an atomic mass of 35.5. Calculate the relative abundance of the isotope of mass number 37 A. 20 B. 25 C. 60 D. 75 Show Content Detailed Solution There is an explanation video available below.	B
58.	The principal constituent of natural gas is A. methane B. ethane C. propane D. Butane Show Content Detailed Solution There is an explanation video available below.	A
59.	In the electrolysis of CuSo4(g) using platinum electrode the reaction at the anode is A. 4H+ 4e - 2H₂ B. 4OH⁼ 4e- + 2H₂O + O₂ C. 2OH - 2e_- = 2OH D. 2OH^- + 2OH = 2H₂O + O₂ Show Content Detailed Solution 40H − 4e → 2H2O + O2is the reaction of sun at the anode in the electrolysis of CuSO4 (g) using platinum particles. Option A,C,D are not formed as a result of the equation There is an explanation video available below.	B
60.	S block elements of the periodic table one made up of A. groups 1, 2, 3 B. groups 1, and 2 C. group 3 D. group 3 to 7 Show Content Detailed Solution S block elements only are made up of group 1 and 2 options A,C,D takes place of the other blocks in the periodic table p,d,f etc. There is an explanation video available below.	B

51.	The substance that is used in the steel industry for the removal of carbon. Sulphur and phosphorus impurities from pig iron is A. oxygen B. chlorine C. nitrogen D. hydrogen Show Content Detailed Solution There is an explanation video available below.	A
52.	If glucose is heated with concentrated tetraoxosulphate(vi)acid, it will be dehydrated to? A. carbon B. carbon(iv)oxide C. ethane D. ethanol Show Content Detailed Solution Carbon concentration of 4 will not give a precipitate heating. Option B,C,D will not be dehydrated There is an explanation video available below.	A
53.	Which of the following compounds can be represented by the molecular formula C2 H6O? A. propanal B. ethanol C. methanoic acid D. glucose Show Content Detailed Solution There is an explanation video available below.	B
54.	What is the pH of 0.00lmoldm³ solution of sodium hydroxide A. 14 B. 13 C. 12 D. 11 Show Content Detailed Solution There is an explanation video available below.	D
55.	N₂O_4(g)→ 2NO_2(g) In the endothermic reaction above, more products formed will be favored by A. A constant values B. an increase in pressure C. a decrease pressure D. a decrease volume Show Content Detailed Solution There is an explanation video available below.	C

56.	Chlorine gas turns damp starch-iodide paper A. pink B. colourless C. red D. dark blue Show Content Detailed Solution There is an explanation video available below.	D
57.	Chlorine consisting of two isotope of mass number 35 and 37 in the ratio 3:1 has an atomic mass of 35.5. Calculate the relative abundance of the isotope of mass number 37 A. 20 B. 25 C. 60 D. 75 Show Content Detailed Solution There is an explanation video available below.	B
58.	The principal constituent of natural gas is A. methane B. ethane C. propane D. Butane Show Content Detailed Solution There is an explanation video available below.	A
59.	In the electrolysis of CuSo4(g) using platinum electrode the reaction at the anode is A. 4H+ 4e - 2H₂ B. 4OH⁼ 4e- + 2H₂O + O₂ C. 2OH - 2e_- = 2OH D. 2OH^- + 2OH = 2H₂O + O₂ Show Content Detailed Solution 40H − 4e → 2H2O + O2is the reaction of sun at the anode in the electrolysis of CuSO4 (g) using platinum particles. Option A,C,D are not formed as a result of the equation There is an explanation video available below.	B
60.	S block elements of the periodic table one made up of A. groups 1, 2, 3 B. groups 1, and 2 C. group 3 D. group 3 to 7 Show Content Detailed Solution S block elements only are made up of group 1 and 2 options A,C,D takes place of the other blocks in the periodic table p,d,f etc. There is an explanation video available below.	B

Prev
1
2
3
4
5
6
7
Next