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

Paper Info

Year :

2015

Title :

Chemistry

Exam :

JAMB Exam

Paper 1 | Objectives

21 - 30 of 64 Questions

#	Question	Ans
21.	Tartaric acid is used industrially to A. make baking powder B. make fruit juice C. remove rust D. dry substance Show Content Detailed Solution There is an explanation video available below.	A
22.	P1V1 = P2V2 supports ? A. Charles’s law B. Boyles’s law C. Graham’s law D. Avogadro’s law Show Content Detailed Solution There is an explanation video available below.	B
23.	A fixed mass of gas occupies 92cm3 at 3°C. What will be its volume at 18C if the pressure remains constant? A. 15.3cm³ B. 87.3cm³ C. 2.0cm³ D. 97.0cm³ Show Content Detailed Solution \(\frac{V_{1}}{T_{1}}\) = \(\frac{V_{2}}{T_{2}}\) \(T_{1}\) = 3 + 273 = 276K \(T_{2}\) = 18 + 273 = 291K \(V_{1}\) = \(92cm^{3}\) \(V_{2}\) = ? \(V_{2}\) = \(\frac{V_{1}T_{2}}{T_{1}}\) =\(\frac{92 \times 291}{276}\) = \(97.0cm^{3}\) There is an explanation video available below.	D
24.	Which of the following ions requires the largest quantity of electricity for discharge at an electrode? A. 2.0 mole of Q3⁺ B. 2.5 mole of R2⁺ C. 3.0 mole of T^- D. 4.0 mole of Y^- Show Content Detailed Solution 2.0 mole of Q3+ ions require the largest quantity of electricity for discharge at an electric. option B,C,D are all carrying a smaller quantity of electricity which not be proven for ant discharge There is an explanation video available below.	A
25.	Hydrogen can be displaced from a hot alkaline solution by A. Fe B. Cu C. Ca D. Sn Show Content Detailed Solution Tin dissolves in concentrated solution of alkalis to give trioxostannate(IV) salt and hydrogen. There is an explanation video available below.	D
26.	Which of the following types of alkanols undergo oxidation to produce alkanoic acids. I. Primary alkanols II. Secondary alkanols III. Tertiary alkanols A. I, II and III B. I and II only C. III only D. I only Show Content Detailed Solution There is an explanation video available below.	D
27.	Rare gases are stable because they A. are monoatomic B. form ions easily C. have duplet or octet electronic configuration in the outermost shells in their atoms D. are volatile gases Show Content Detailed Solution Rare gases are stable because they have duplet or octet electronic configurations in the outermost shells in their atoms, as a result they don’t go into solution easily. option A, B, Dare not because they go into solution easily (unstable) There is an explanation video available below.	C
28.	A major source of oxide of nitrogen is from the burning of A. coal B. wood C. fuel D. chlorofluorocarbons Show Content Detailed Solution There is an explanation video available below.	C
29.	Which of these radioactive elements is commonly used as a nuclear fuel A. uranium B. palladium C. actium D. thorium Show Content Detailed Solution Uranium is common nuclear because of its less stability as a result has a great tendency to increase energy than. Options B,C,D which are not stable There is an explanation video available below.	A
30.	All these are electromagnetic waves except A. White light B. Photon C. X-ray D. Infrared Show Content Detailed Solution There is an explanation video available below.	B

21.	Tartaric acid is used industrially to A. make baking powder B. make fruit juice C. remove rust D. dry substance Show Content Detailed Solution There is an explanation video available below.	A
22.	P1V1 = P2V2 supports ? A. Charles’s law B. Boyles’s law C. Graham’s law D. Avogadro’s law Show Content Detailed Solution There is an explanation video available below.	B
23.	A fixed mass of gas occupies 92cm3 at 3°C. What will be its volume at 18C if the pressure remains constant? A. 15.3cm³ B. 87.3cm³ C. 2.0cm³ D. 97.0cm³ Show Content Detailed Solution \(\frac{V_{1}}{T_{1}}\) = \(\frac{V_{2}}{T_{2}}\) \(T_{1}\) = 3 + 273 = 276K \(T_{2}\) = 18 + 273 = 291K \(V_{1}\) = \(92cm^{3}\) \(V_{2}\) = ? \(V_{2}\) = \(\frac{V_{1}T_{2}}{T_{1}}\) =\(\frac{92 \times 291}{276}\) = \(97.0cm^{3}\) There is an explanation video available below.	D
24.	Which of the following ions requires the largest quantity of electricity for discharge at an electrode? A. 2.0 mole of Q3⁺ B. 2.5 mole of R2⁺ C. 3.0 mole of T^- D. 4.0 mole of Y^- Show Content Detailed Solution 2.0 mole of Q3+ ions require the largest quantity of electricity for discharge at an electric. option B,C,D are all carrying a smaller quantity of electricity which not be proven for ant discharge There is an explanation video available below.	A
25.	Hydrogen can be displaced from a hot alkaline solution by A. Fe B. Cu C. Ca D. Sn Show Content Detailed Solution Tin dissolves in concentrated solution of alkalis to give trioxostannate(IV) salt and hydrogen. There is an explanation video available below.	D

26.	Which of the following types of alkanols undergo oxidation to produce alkanoic acids. I. Primary alkanols II. Secondary alkanols III. Tertiary alkanols A. I, II and III B. I and II only C. III only D. I only Show Content Detailed Solution There is an explanation video available below.	D
27.	Rare gases are stable because they A. are monoatomic B. form ions easily C. have duplet or octet electronic configuration in the outermost shells in their atoms D. are volatile gases Show Content Detailed Solution Rare gases are stable because they have duplet or octet electronic configurations in the outermost shells in their atoms, as a result they don’t go into solution easily. option A, B, Dare not because they go into solution easily (unstable) There is an explanation video available below.	C
28.	A major source of oxide of nitrogen is from the burning of A. coal B. wood C. fuel D. chlorofluorocarbons Show Content Detailed Solution There is an explanation video available below.	C
29.	Which of these radioactive elements is commonly used as a nuclear fuel A. uranium B. palladium C. actium D. thorium Show Content Detailed Solution Uranium is common nuclear because of its less stability as a result has a great tendency to increase energy than. Options B,C,D which are not stable There is an explanation video available below.	A
30.	All these are electromagnetic waves except A. White light B. Photon C. X-ray D. Infrared Show Content Detailed Solution There is an explanation video available below.	B

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