Chemistry, 2010, JAMB Exam, Exam, Paper 1 | Objectives

Paper Info

Year :

2010

Title :

Chemistry

Exam :

JAMB Exam

Paper 1 | Objectives

31 - 40 of 49 Questions

#	Question	Ans
31.	Which of the following is used in rocket fuels? A. HNO₃ B. CH₃COOH C. H₂SO₄ D. HCl Show Content Detailed Solution - Due to its unique powerful oxidizing nature, Nitric acid is often used in rocket fuels as a propeller NB: Ethanol (not Ethanoic acid) is used alone or mixed with petrol as fuel for racing cars and in rockets. There is an explanation video available below.	A
32.	A constituent common to bronze and solder is? A. lead B. silver C. copper D. tin Show Content Detailed Solution - bronze, alloy traditionally composed of copper and tin. - Solder is an alloy, made from the elements, tin and lead. There is an explanation video available below.	D
33.	When iron is exposed to moist air, it gradually rusts. This is due to the formation of? A. hydrate iron (III) oxide B. anhydrous iron (III) oxide C. anhydrous iron (II) oxide D. hydrate iron (II) oxide Show Content Detailed Solution Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. There is an explanation video available below.	A
34.	A compound gives an orange-red color to non-luminous flame. This compound is likely to contain? A. Na⁺ B. Ca²⁺ C. Fe³⁺ D. Fe²⁺ Show Content Detailed Solution - Calcium when introduced into the flame, it will produce brick red / red-orange colour. There is an explanation video available below.	B
35.	Stainless steel is used for making? A. magnets B. tools C. coins and medals D. moving parts of clocks Show Content Detailed Solution - Stainless steel is an alloy of iron, nickel and chromium. It is used in making cutlery, tools and surgical equipment. There is an explanation video available below.	B
36.	The residual solids from the fractional distillation of petroleum are used as? A. coatings of pipes B. raw materials for the cracking process C. fuel for the driving tractors D. fuel for jet engines Show Content Detailed Solution Other residues (apart from bitumen) are used as fuel, pipe coating, etc There is an explanation video available below.	A
37.	The IUPAC nomenclature of the compound above is? A. 4 - ethyloctane B. 5 - ethyloctane C. 5 - propylheptane D. 3 - propylheptane Show Content Detailed Solution Adhering to the basic naming rules, this compound is identified as 4 - ethyloctane There is an explanation video available below.	A
38.	Which of the following is used as fuel in miners' lamp? A. Ethanal B. Ethyne C. Ethene D. Ethane Show Content Detailed Solution Ethyne is a sometimes used a fuel in miners'lamps. There is an explanation video available below.	B
39.	Which of the following organic compounds is very soluble in water? A. CH₃COOH B. C₂H₂ C. C₂H₄ D. CH₃COOC₂H₅ Show Content Detailed Solution Ethanoic acid ( CH\(_3\)COOH ) is the only organic compound listed here that is (very) soluble in water. There is an explanation video available below.	A
40.	Benzene reacts with hydrogen in the presence of nickel catalyst at 180ºC to give? A. xylene B. toluene C. cyclopentane D. cyclohexane Show Content Detailed Solution Cyclohexane is formed when Benzene (vapor) undergoes addition reaction with hydrogen in the presence of nickel catalyst at 180°C There is an explanation video available below.	D

31.	Which of the following is used in rocket fuels? A. HNO₃ B. CH₃COOH C. H₂SO₄ D. HCl Show Content Detailed Solution - Due to its unique powerful oxidizing nature, Nitric acid is often used in rocket fuels as a propeller NB: Ethanol (not Ethanoic acid) is used alone or mixed with petrol as fuel for racing cars and in rockets. There is an explanation video available below.	A
32.	A constituent common to bronze and solder is? A. lead B. silver C. copper D. tin Show Content Detailed Solution - bronze, alloy traditionally composed of copper and tin. - Solder is an alloy, made from the elements, tin and lead. There is an explanation video available below.	D
33.	When iron is exposed to moist air, it gradually rusts. This is due to the formation of? A. hydrate iron (III) oxide B. anhydrous iron (III) oxide C. anhydrous iron (II) oxide D. hydrate iron (II) oxide Show Content Detailed Solution Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. There is an explanation video available below.	A
34.	A compound gives an orange-red color to non-luminous flame. This compound is likely to contain? A. Na⁺ B. Ca²⁺ C. Fe³⁺ D. Fe²⁺ Show Content Detailed Solution - Calcium when introduced into the flame, it will produce brick red / red-orange colour. There is an explanation video available below.	B
35.	Stainless steel is used for making? A. magnets B. tools C. coins and medals D. moving parts of clocks Show Content Detailed Solution - Stainless steel is an alloy of iron, nickel and chromium. It is used in making cutlery, tools and surgical equipment. There is an explanation video available below.	B

36.	The residual solids from the fractional distillation of petroleum are used as? A. coatings of pipes B. raw materials for the cracking process C. fuel for the driving tractors D. fuel for jet engines Show Content Detailed Solution Other residues (apart from bitumen) are used as fuel, pipe coating, etc There is an explanation video available below.	A
37.	The IUPAC nomenclature of the compound above is? A. 4 - ethyloctane B. 5 - ethyloctane C. 5 - propylheptane D. 3 - propylheptane Show Content Detailed Solution Adhering to the basic naming rules, this compound is identified as 4 - ethyloctane There is an explanation video available below.	A
38.	Which of the following is used as fuel in miners' lamp? A. Ethanal B. Ethyne C. Ethene D. Ethane Show Content Detailed Solution Ethyne is a sometimes used a fuel in miners'lamps. There is an explanation video available below.	B
39.	Which of the following organic compounds is very soluble in water? A. CH₃COOH B. C₂H₂ C. C₂H₄ D. CH₃COOC₂H₅ Show Content Detailed Solution Ethanoic acid ( CH\(_3\)COOH ) is the only organic compound listed here that is (very) soluble in water. There is an explanation video available below.	A
40.	Benzene reacts with hydrogen in the presence of nickel catalyst at 180ºC to give? A. xylene B. toluene C. cyclopentane D. cyclohexane Show Content Detailed Solution Cyclohexane is formed when Benzene (vapor) undergoes addition reaction with hydrogen in the presence of nickel catalyst at 180°C There is an explanation video available below.	D