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
Solid calcium oxide reacts vigorously with water to form calcium hydroxide accompanied by the liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form its solution called lime water. Which among the following is (are) true about slaking of lime 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)
The inexhaustible source of energy of the stars is due to
(a) the conversion of Hydrogen to Helium.
(b) conversion of Helium to Hydrogen.
(c) decay of radioactive elements.
(d) excess of oxygen that helps burn and release energy.
Option a – the conversion of Hydrogen to Helium
Which one of the following pairs is correctly matched?
(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 obtained by passing carbon dioxide into water is
(a) an oxidizing agent
(b) basic in nature
(c) acidic in nature
(d) a reducing agent
Option c – acidic in nature
Which of the following is not biodegradable?
(a) Domestic sewage
(b) Lab detergents
(c) Soap
(d) Plant leaves
Option b – Lab detergents
Which of the process is known as nitrification?
(a) The reaction of Nitrogen Monoxide with oxygen to form, nitric acid
(b) Reaction of nitrogen dioxide with water to form nitric acid
(c) Conversion of ammonia to nitrites
(d) Conversion of nitrite to nitric oxide
Option c – Conversion of ammonia to nitrites
Which one among the following is not a chemical change?
(a) Curding of Milk
(b) Ripening of fruit
(c) Evaporation of water
(d) Burning of Coal
Option c – Evaporation of water
Bakelite is formed 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 removes grease by
(a) Coagulation
(b) Adsorption
(c) Emulsification
(d) Osmosis
(e) None of the above / More than one of the above
Option c – Emulsification
Which of the following reactions is based on activity series of metals?
(a) Decomposition reaction
(b) Displacement reaction
(c) Double displacement reaction
(d) Synthesis reaction
Option b – Displacement reaction
An example of corrosion is
(a) Black coating on Silver
(b) Green coating on Copper
(c) Brown coating on Iron
(d) Above three
Option d – Above three
Which one of the following is an example of chemical change?
(a) Burning of paper
(b) Magnetization of soft iron
(c) Dissolution of cane sugar in water
(d) Preparation of ice cubes from water
Option a – Burning of paper
Which one of the following is involved in the desalination of seawater?
(a) Reverse osmosis
(b) Simple osmosis
(c) Use of sodium aluminium silicate as zeolite
(d) Use of ion-selective electrodes
Option a – Reverse osmosis
Which one of the following is not a chemical change?
(a) Burning of coal in the air
(b) Fermentation of sugar cane juice
(c) Crystallisation of table salt from seawater
(d) Cracking of petroleum
Option c – Crystallisation of table salt from seawater
Which one of the following is correct? The setting of the plaster of Paris is
(a) dehydration
(b) oxidation with atmospheric oxygen
(c) hydration leading to another hydrate
(d) combination with atmospheric CO₂
Option c – hydration leading to another hydrate
Which one of the following when dissolved in H₂O gives a hissing sound?
(a) Limestone
(b) Slaked lime
(c) Sodalime
(d) Quicklime
Option d – Quicklime
Commercial vulcanization of rubber involves
(a) sulphur
(b) carbon
(c) phosphorus
(d) selenium
Option a – sulphur
When carbon dioxide is passed through lime water, the solution turns milky, but, on prolonged passage, the solution turns clear. This is because
(a) the calcium carbonate formed initially is converted to soluble calcium bicarbonate on passage of more carbon dioxide
(b) the reaction is reversible and lime water is regenerated
(c) the calcium bicarbonate formed initially is converted to soluble calcium carbonate on passage of more carbon dioxide
(d) the initially formed insoluble compound is soluble in carbonic acid.
Option a – the calcium carbonate formed initially is converted to soluble calcium bicarbonate on passage of more carbon dioxide
In the process of electroplating a utensil with zinc
(a) the utensil is made the cathode
(b) pure zinc is made the anode
(c) the utensil is made the cathode and pure zinc is made the anode
(d) the utensil is made the anode and pure zinc is made the cathode
Option c – the utensil is made the cathode and pure zinc is made the anode
Which one of the following statements is correct?
(a) Covalent bonds are directional
(b) Ionic bonds are directional
(c) Both covalent and ionic bonds are directional
(d) Both covalent and ionic bonds are non-directional
Option a – Covalent bonds are directional
Which one of the following is not a chemical change?
(a) Ripening of fruits
(b) Curdling of milk
(c) Freezing of water
Option c – Freezing of water
Consider the following statements : If there were no phenomenon of capillarity 1. It would be difficult to use a kerosene lamp. 2. One would not be able to use a straw to consume a soft drink. 3. the blotting paper would fail to function. 4. the big trees that we see around would not have grown on the earth. Which of the statements given above is/are correct?
(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
While tinning of brass utensils, the ammonium chloride powder used to clean the hot utensil produces fumes of
(a) ammonia
(b) carbon monoxide
(c) hydrochloric acid
(d) ammonia and hydrochloric acid
Option d – ammonia and hydrochloric acid
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