Chemistry, 1994, JAMB Exam, Exam, Paper 1 | Objectives

Paper Info

Year :

1994

Title :

Chemistry

Exam :

JAMB Exam

Paper 1 | Objectives

11 - 20 of 52 Questions

#	Question	Ans
11.	Which of the following physical properties decreases down a group in the periodic table? A. Atomic radius B. Ionic radius C. Electropositivity D. Electronegativity	D
12.	Element X, Y and Z belong to a groups I, V and VII respectively. Which of the following is TRUE about the bond types of XZ and YZ₃? A. Both are electrovalent B. Both are covalent C. XZ is electrovalent and YZ₃ is covalent D. XZ is covalent and YZ₃ is electrovalent	C
13.	A solid that absorbs water from he atmosphere and forms an aqueous solution is? A. hydrophilic B. efforescent C. deliquescent D. hygroscopic	C
14.	A major effect of oil pollution in coastal waters is the? A. destruction of marine life B. desalination of the water C. increase in the acidity of the water D. detoxification of the water	A
15.	Sodium chloride has no solubility product value because of its? A. saline nature B. high solubility C. low solubility D. insolubility	B
16.	The solubility, in moles per dm³ of 20.2 g of potassium trioxonitrate (V) dissolve in 100 g of the resulting mixture is? (K = 39, O = 16, N =14). A. 0.10 B. 0.20 C. 1.00 D. 2.00	D
17.	Which of the following atoms represents deuterium? A. No protons = 1, No of neutrons = 0, No of electrons = 0 B. No protons = 1, No of neutrons = 0, No of electrons = 1 C. No protons = 1, No of neutrons = 1, No of electrons = 1 D. No protons = 1, No of neutrons = 2, No of electrons = 1	C
18.	A few drops of concentrated PCI are added to about 10cm³ of a solution of pH 3.4. The pH of the resulting mixtures is? A. less than 3.4 B. greater than 3.4 C. unaltered D. the same as that of pure water	C
19.	Which of the following compounds is a base? A. CO₂ B. CaO C. H₃PO₃ D. CH₃COOCH₃	B
20.	20 cm³ of a 2.0 M solution of ethanoic acid was added to excess of 0.05 M sodium hydroxide. The mass of the salt produced is? (Na = 23, C = 12, O = 16, H = 1) A. 2.50 g B. 2.73 g C. 3.28 g D. 4.54 g	C

11.	Which of the following physical properties decreases down a group in the periodic table? A. Atomic radius B. Ionic radius C. Electropositivity D. Electronegativity	D
12.	Element X, Y and Z belong to a groups I, V and VII respectively. Which of the following is TRUE about the bond types of XZ and YZ₃? A. Both are electrovalent B. Both are covalent C. XZ is electrovalent and YZ₃ is covalent D. XZ is covalent and YZ₃ is electrovalent	C
13.	A solid that absorbs water from he atmosphere and forms an aqueous solution is? A. hydrophilic B. efforescent C. deliquescent D. hygroscopic	C
14.	A major effect of oil pollution in coastal waters is the? A. destruction of marine life B. desalination of the water C. increase in the acidity of the water D. detoxification of the water	A
15.	Sodium chloride has no solubility product value because of its? A. saline nature B. high solubility C. low solubility D. insolubility	B

16.	The solubility, in moles per dm³ of 20.2 g of potassium trioxonitrate (V) dissolve in 100 g of the resulting mixture is? (K = 39, O = 16, N =14). A. 0.10 B. 0.20 C. 1.00 D. 2.00	D
17.	Which of the following atoms represents deuterium? A. No protons = 1, No of neutrons = 0, No of electrons = 0 B. No protons = 1, No of neutrons = 0, No of electrons = 1 C. No protons = 1, No of neutrons = 1, No of electrons = 1 D. No protons = 1, No of neutrons = 2, No of electrons = 1	C
18.	A few drops of concentrated PCI are added to about 10cm³ of a solution of pH 3.4. The pH of the resulting mixtures is? A. less than 3.4 B. greater than 3.4 C. unaltered D. the same as that of pure water	C
19.	Which of the following compounds is a base? A. CO₂ B. CaO C. H₃PO₃ D. CH₃COOCH₃	B
20.	20 cm³ of a 2.0 M solution of ethanoic acid was added to excess of 0.05 M sodium hydroxide. The mass of the salt produced is? (Na = 23, C = 12, O = 16, H = 1) A. 2.50 g B. 2.73 g C. 3.28 g D. 4.54 g	C