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Which of the following statement regarding the oxides of alkali and alkaline metals is not correct?
- a)The reactivity of K2O towards water is more than that of Na2O towards water
- b)The oxides of alkaline earth metals are more basic than those of alkali metals
- c)MgO is used as a refractory material for lining electric furnaces.
- d)The milk of lime and lime water are two different solutions.
Correct answer is option 'D'. Can you explain this answer?
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Which of the following statement regarding the oxides of alkali and al...
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The question is asking for the statement that is not correct regarding the oxides of alkali and alkaline earth metals. We will analyze each statement and determine which one is incorrect.
Statement a: The reactivity of K2O towards water is more than that of Na2O towards water.
Explanation: The reactivity of an oxide towards water depends on the basicity of the oxide. The basicity of an oxide is determined by the number of hydroxide ions (OH-) that are produced when the oxide reacts with water. Alkali metal oxides are more basic than alkaline earth metal oxides, so the reactivity of Na2O towards water is higher than that of K2O. Therefore, statement a is incorrect.
Statement b: The oxides of alkaline earth metals are more basic than those of alkali metals.
Explanation: This statement is correct. Alkaline earth metal oxides are more basic than alkali metal oxides. Alkaline earth metals have two valence electrons, which they readily lose to form cations with a +2 charge. The resulting oxides, such as MgO and CaO, have a higher basicity compared to alkali metal oxides, which have a +1 charge.
Statement c: MgO is used as a refractory material for lining electric furnaces.
Explanation: This statement is correct. MgO is a refractory material, which means it has a high melting point and is resistant to heat. It is commonly used as a lining material in electric furnaces because it can withstand high temperatures without melting or reacting with the materials being processed.
Statement d: The milk of lime and lime water are two different solutions.
Explanation: This statement is incorrect. The milk of lime and lime water are the same solution. They both refer to a suspension of calcium hydroxide (Ca(OH)2) in water. The term "milk of lime" is often used to describe a solution that is prepared by mixing calcium oxide (CaO) or quicklime with water. The resulting suspension is milky in appearance. Lime water is another term used to describe the same solution. It is called "lime water" because it is a saturated solution of calcium hydroxide in water, and it has a slightly alkaline taste.
Therefore, the correct answer is option D: The milk of lime and lime water are two different solutions.
The question is asking for the statement that is not correct regarding the oxides of alkali and alkaline earth metals. We will analyze each statement and determine which one is incorrect.
Statement a: The reactivity of K2O towards water is more than that of Na2O towards water.
Explanation: The reactivity of an oxide towards water depends on the basicity of the oxide. The basicity of an oxide is determined by the number of hydroxide ions (OH-) that are produced when the oxide reacts with water. Alkali metal oxides are more basic than alkaline earth metal oxides, so the reactivity of Na2O towards water is higher than that of K2O. Therefore, statement a is incorrect.
Statement b: The oxides of alkaline earth metals are more basic than those of alkali metals.
Explanation: This statement is correct. Alkaline earth metal oxides are more basic than alkali metal oxides. Alkaline earth metals have two valence electrons, which they readily lose to form cations with a +2 charge. The resulting oxides, such as MgO and CaO, have a higher basicity compared to alkali metal oxides, which have a +1 charge.
Statement c: MgO is used as a refractory material for lining electric furnaces.
Explanation: This statement is correct. MgO is a refractory material, which means it has a high melting point and is resistant to heat. It is commonly used as a lining material in electric furnaces because it can withstand high temperatures without melting or reacting with the materials being processed.
Statement d: The milk of lime and lime water are two different solutions.
Explanation: This statement is incorrect. The milk of lime and lime water are the same solution. They both refer to a suspension of calcium hydroxide (Ca(OH)2) in water. The term "milk of lime" is often used to describe a solution that is prepared by mixing calcium oxide (CaO) or quicklime with water. The resulting suspension is milky in appearance. Lime water is another term used to describe the same solution. It is called "lime water" because it is a saturated solution of calcium hydroxide in water, and it has a slightly alkaline taste.
Therefore, the correct answer is option D: The milk of lime and lime water are two different solutions.
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Which of the following statement regarding the oxides of alkali and al...
Both are Ca(OH)2(aq) i.e. calcium hydroxide solution.
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Which of the following statement regarding the oxides of alkali and alkaline metals is not correct?a)The reactivity of K2O towards water is more than that of Na2O towards waterb)The oxides of alkaline earth metals are more basic than those of alkali metalsc)MgO is used as a refractory material for lining electric furnaces.d)The milk of lime and lime water are two different solutions.Correct answer is option 'D'. Can you explain this answer?
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Which of the following statement regarding the oxides of alkali and alkaline metals is not correct?a)The reactivity of K2O towards water is more than that of Na2O towards waterb)The oxides of alkaline earth metals are more basic than those of alkali metalsc)MgO is used as a refractory material for lining electric furnaces.d)The milk of lime and lime water are two different solutions.Correct answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Which of the following statement regarding the oxides of alkali and alkaline metals is not correct?a)The reactivity of K2O towards water is more than that of Na2O towards waterb)The oxides of alkaline earth metals are more basic than those of alkali metalsc)MgO is used as a refractory material for lining electric furnaces.d)The milk of lime and lime water are two different solutions.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statement regarding the oxides of alkali and alkaline metals is not correct?a)The reactivity of K2O towards water is more than that of Na2O towards waterb)The oxides of alkaline earth metals are more basic than those of alkali metalsc)MgO is used as a refractory material for lining electric furnaces.d)The milk of lime and lime water are two different solutions.Correct answer is option 'D'. Can you explain this answer?.
Which of the following statement regarding the oxides of alkali and alkaline metals is not correct?a)The reactivity of K2O towards water is more than that of Na2O towards waterb)The oxides of alkaline earth metals are more basic than those of alkali metalsc)MgO is used as a refractory material for lining electric furnaces.d)The milk of lime and lime water are two different solutions.Correct answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Which of the following statement regarding the oxides of alkali and alkaline metals is not correct?a)The reactivity of K2O towards water is more than that of Na2O towards waterb)The oxides of alkaline earth metals are more basic than those of alkali metalsc)MgO is used as a refractory material for lining electric furnaces.d)The milk of lime and lime water are two different solutions.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statement regarding the oxides of alkali and alkaline metals is not correct?a)The reactivity of K2O towards water is more than that of Na2O towards waterb)The oxides of alkaline earth metals are more basic than those of alkali metalsc)MgO is used as a refractory material for lining electric furnaces.d)The milk of lime and lime water are two different solutions.Correct answer is option 'D'. Can you explain this answer?.
Solutions for Which of the following statement regarding the oxides of alkali and alkaline metals is not correct?a)The reactivity of K2O towards water is more than that of Na2O towards waterb)The oxides of alkaline earth metals are more basic than those of alkali metalsc)MgO is used as a refractory material for lining electric furnaces.d)The milk of lime and lime water are two different solutions.Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
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Which of the following statement regarding the oxides of alkali and alkaline metals is not correct?a)The reactivity of K2O towards water is more than that of Na2O towards waterb)The oxides of alkaline earth metals are more basic than those of alkali metalsc)MgO is used as a refractory material for lining electric furnaces.d)The milk of lime and lime water are two different solutions.Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Which of the following statement regarding the oxides of alkali and alkaline metals is not correct?a)The reactivity of K2O towards water is more than that of Na2O towards waterb)The oxides of alkaline earth metals are more basic than those of alkali metalsc)MgO is used as a refractory material for lining electric furnaces.d)The milk of lime and lime water are two different solutions.Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Which of the following statement regarding the oxides of alkali and alkaline metals is not correct?a)The reactivity of K2O towards water is more than that of Na2O towards waterb)The oxides of alkaline earth metals are more basic than those of alkali metalsc)MgO is used as a refractory material for lining electric furnaces.d)The milk of lime and lime water are two different solutions.Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following statement regarding the oxides of alkali and alkaline metals is not correct?a)The reactivity of K2O towards water is more than that of Na2O towards waterb)The oxides of alkaline earth metals are more basic than those of alkali metalsc)MgO is used as a refractory material for lining electric furnaces.d)The milk of lime and lime water are two different solutions.Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice JEE tests.
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