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Ionic Bonding of Aluminum Oxide. We covered all the Ionic Bonding of Aluminum Oxide MCQ in this post for free so that you can practice well for the exam.
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MCQ on Ionic Bonding of Aluminum Oxide for Students
When solid calcium oxide is mixed with water, it reacts vigorously to produce calcium hydroxide along with the release of heat. This process is known as lime slaking. The calcium hydroxide dissolves in water to form lime water. Which of the following statements are true about this reaction and the solution formed? (i) It is an endothermic reaction (ii) It is an exothermic reaction (iii) The pH of the resulting solution will be more than seven (iv) The pH of the resulting solution will be less than seven
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i) and (iv)
(d) (iii) and (iv)
Option b – (ii) and (iii)
What is the primary source of energy in stars?
(a) Transformation of hydrogen into helium
(b) Conversion of helium into hydrogen
(c) Breakdown of radioactive substances
(d) Excess oxygen supporting continuous combustion
Option a – Transformation of hydrogen into helium
Which of the following pairs is matched correctly?
(a) Silver iodide – Horn silver
(b) Silver chloride – Artificial rain
(c) Zinc phosphide – Rat poison
(d) Zinc sulphide – Philosopher’s wool
Option c – Zinc phosphide – Rat poison
Soda water formed by dissolving carbon dioxide in water is
(a) An oxidizing agent
(b) Basic in nature
(c) Acidic in nature
(d) A reducing agent
Option c – Acidic in nature
Which one among the following is not biodegradable?
(a) Domestic sewage
(b) Laboratory detergents
(c) Soap
(d) Plant leaves
Option b – Laboratory detergents
The process of converting ammonia into nitrites is known as
(a) Reaction of nitrogen monoxide with oxygen to produce nitric acid
(b) Interaction of nitrogen dioxide and water to yield nitric acid
(c) Transformation of ammonia into nitrites
(d) Conversion of nitrites into nitric oxide
Option c – Transformation of ammonia into nitrites
Which of the following is not a chemical change?
(a) Milk turning into curd
(b) Fruits becoming ripe
(c) Water evaporating
(d) Coal catching fire
Option c – Water evaporating
Bakelite is manufactured by the condensation of
(a) Urea and formaldehyde
(b) Phenol and formaldehyde
(c) Phenol and acetaldehyde
(d) Melamine and formaldehyde
Option b – Phenol and formaldehyde
Soap eliminates grease primarily through
(a) Coagulation
(b) Adsorption
(c) Emulsification
(d) Osmosis
Option c – Emulsification
Which reaction is dependent on the metal reactivity series?
(a) Decomposition reaction
(b) Displacement reaction
(c) Double displacement reaction
(d) Synthesis reaction
Option b – Displacement reaction
Which of the following represents corrosion?
(a) Formation of black coating on silver
(b) Formation of green coating on copper
(c) Formation of brown coating on iron
(d) All of the above
Option d – All of the above
Which of these represents a chemical transformation?
(a) Paper being burnt
(b) Iron turning magnetic
(c) Cane sugar dissolving in water
(d) Water freezing into ice
Option a – Paper being burnt
Desalination of seawater is achieved through
(a) Reverse osmosis
(b) Simple osmosis
(c) Sodium aluminium silicate used as zeolite
(d) Ion-selective electrode method
Option a – Reverse osmosis
Which of these is not a chemical reaction?
(a) Coal burning in air
(b) Sugarcane juice fermenting
(c) Table salt crystallizing from seawater
(d) Petroleum cracking
Option c – Table salt crystallizing from seawater
The hardening of plaster of Paris occurs due to
(a) Water loss (dehydration)
(b) Oxidation by air
(c) Absorption of water and formation of another hydrate
(d) Reaction with atmospheric carbon dioxide
Option c – Absorption of water and formation of another hydrate
Which of these produces a hissing sound when added to water?
(a) Limestone
(b) Slaked lime
(c) Sodalime
(d) Quicklime
Option d – Quicklime
Vulcanization of rubber commercially uses
(a) Sulphur
(b) Carbon
(c) Phosphorus
(d) Selenium
Option a – Sulphur
When carbon dioxide is bubbled into lime water, the solution becomes milky but clears upon continued bubbling. Why?
(a) Calcium carbonate initially forms, then becomes soluble calcium bicarbonate
(b) The reaction reverses and regenerates lime water
(c) Calcium bicarbonate first forms, which converts into calcium carbonate
(d) The solid formed at first dissolves in carbonic acid
Option a – Calcium carbonate initially forms, then becomes soluble calcium bicarbonate
During electroplating of utensils using zinc:
(a) The utensil is the cathode
(b) Pure zinc is the anode
(c) The utensil is the cathode and zinc is the anode
(d) The utensil is the anode and zinc is the cathode
Option c – The utensil is the cathode and zinc is the anode
Which one of the statements about chemical bonding is correct?
(a) Covalent bonds have directionality
(b) Ionic bonds have directionality
(c) Both covalent and ionic bonds are directional
(d) Both covalent and ionic bonds lack direction
Option a – Covalent bonds have directionality
Which of the following is not a chemical transformation?
(a) Ripening of fruits
(b) Milk turning into curd
(c) Freezing water into ice
(d) Digesting food
Option c – Freezing water into ice
What would be the effect if capillarity did not exist? 1. Kerosene lamps would not function 2. Drinking through a straw would be impossible 3. Blotting paper would lose functionality 4. Tall trees would not grow
(a) 1, 2, and 3 only
(b) 1, 3, and 4 only
(c) 2 and 4 only
(d) 1, 2, 3, and 4
Option b – 1, 3, and 4 only
Ammonium chloride used during tinning of brass utensils emits which fumes?
(a) Ammonia
(b) Carbon monoxide
(c) Hydrochloric acid
(d) A combination of ammonia and hydrochloric acid
Option d – A combination of ammonia and hydrochloric acid
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