Chemistry Exam > Chemistry Questions > Select correctstatemet(s):a)When Cl2 is added...
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Select correctstatemet(s):
- a)When Cl2 is added to KI solution containing chloroform, chloroform turns violet
- b)KI gives violet vapors when treated with conc. H2SO4
- c)Ca+2 ion gives brick red color in flame test
- d)PH3 is colorless and has rotten fish smell or garlic like odour
Correct answer is option 'A,B,C,D'. Can you explain this answer?
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Select correctstatemet(s):a)When Cl2 is added to KI solution containin...
Statement a: When Cl2 is added to KI solution containing chloroform, chloroform turns violet.
This statement is correct. When chlorine gas (Cl2) is added to a solution of potassium iodide (KI) containing chloroform (CHCl3), the chloroform turns violet. This is due to the formation of iodine (I2) in the reaction between chlorine and potassium iodide. The iodine then reacts with the chloroform, resulting in the formation of a violet-colored compound.
Statement b: KI gives violet vapors when treated with conc. H2SO4.
This statement is correct. When concentrated sulfuric acid (H2SO4) is added to potassium iodide (KI), violet vapors of iodine are produced. This is because sulfuric acid acts as an oxidizing agent, oxidizing iodide ions (I-) to iodine (I2) gas. The violet color of iodine vapors is observed.
Statement c: Ca2+ ion gives brick red color in flame test.
This statement is correct. When calcium ions (Ca2+) are subjected to a flame test, they emit a brick red color. The flame test involves heating a sample in a flame, causing the electrons in the metal ion to become excited. When the excited electrons return to their ground state, they release energy in the form of visible light. In the case of calcium ions, this energy corresponds to a brick red color.
Statement d: PH3 is colorless and has a rotten fish smell or garlic-like odor.
This statement is correct. Phosphine (PH3) is a colorless gas with a characteristic odor often described as rotten fish or garlic-like. It is highly toxic and flammable. The odor is due to the presence of phosphorus, which has a distinct smell. Phosphine does not have any noticeable color.
In conclusion, all the given statements are correct. Chloroform turns violet when Cl2 is added, KI produces violet vapors when treated with conc. H2SO4, Ca2+ ions give a brick red color in a flame test, and PH3 is a colorless gas with a distinct odor.
This statement is correct. When chlorine gas (Cl2) is added to a solution of potassium iodide (KI) containing chloroform (CHCl3), the chloroform turns violet. This is due to the formation of iodine (I2) in the reaction between chlorine and potassium iodide. The iodine then reacts with the chloroform, resulting in the formation of a violet-colored compound.
Statement b: KI gives violet vapors when treated with conc. H2SO4.
This statement is correct. When concentrated sulfuric acid (H2SO4) is added to potassium iodide (KI), violet vapors of iodine are produced. This is because sulfuric acid acts as an oxidizing agent, oxidizing iodide ions (I-) to iodine (I2) gas. The violet color of iodine vapors is observed.
Statement c: Ca2+ ion gives brick red color in flame test.
This statement is correct. When calcium ions (Ca2+) are subjected to a flame test, they emit a brick red color. The flame test involves heating a sample in a flame, causing the electrons in the metal ion to become excited. When the excited electrons return to their ground state, they release energy in the form of visible light. In the case of calcium ions, this energy corresponds to a brick red color.
Statement d: PH3 is colorless and has a rotten fish smell or garlic-like odor.
This statement is correct. Phosphine (PH3) is a colorless gas with a characteristic odor often described as rotten fish or garlic-like. It is highly toxic and flammable. The odor is due to the presence of phosphorus, which has a distinct smell. Phosphine does not have any noticeable color.
In conclusion, all the given statements are correct. Chloroform turns violet when Cl2 is added, KI produces violet vapors when treated with conc. H2SO4, Ca2+ ions give a brick red color in a flame test, and PH3 is a colorless gas with a distinct odor.
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Select correctstatemet(s):a)When Cl2 is added to KI solution containing chloroform, chloroform turns violetb)KI gives violet vapors when treated with conc. H2SO4c)Ca+2 ion gives brick red color in flame testd)PH3 is colorless and has rotten fish smell or garlic like odourCorrect answer is option 'A,B,C,D'. Can you explain this answer?
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Select correctstatemet(s):a)When Cl2 is added to KI solution containing chloroform, chloroform turns violetb)KI gives violet vapors when treated with conc. H2SO4c)Ca+2 ion gives brick red color in flame testd)PH3 is colorless and has rotten fish smell or garlic like odourCorrect answer is option 'A,B,C,D'. Can you explain this answer? for Chemistry 2025 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Select correctstatemet(s):a)When Cl2 is added to KI solution containing chloroform, chloroform turns violetb)KI gives violet vapors when treated with conc. H2SO4c)Ca+2 ion gives brick red color in flame testd)PH3 is colorless and has rotten fish smell or garlic like odourCorrect answer is option 'A,B,C,D'. Can you explain this answer? covers all topics & solutions for Chemistry 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Select correctstatemet(s):a)When Cl2 is added to KI solution containing chloroform, chloroform turns violetb)KI gives violet vapors when treated with conc. H2SO4c)Ca+2 ion gives brick red color in flame testd)PH3 is colorless and has rotten fish smell or garlic like odourCorrect answer is option 'A,B,C,D'. Can you explain this answer?.
Select correctstatemet(s):a)When Cl2 is added to KI solution containing chloroform, chloroform turns violetb)KI gives violet vapors when treated with conc. H2SO4c)Ca+2 ion gives brick red color in flame testd)PH3 is colorless and has rotten fish smell or garlic like odourCorrect answer is option 'A,B,C,D'. Can you explain this answer? for Chemistry 2025 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Select correctstatemet(s):a)When Cl2 is added to KI solution containing chloroform, chloroform turns violetb)KI gives violet vapors when treated with conc. H2SO4c)Ca+2 ion gives brick red color in flame testd)PH3 is colorless and has rotten fish smell or garlic like odourCorrect answer is option 'A,B,C,D'. Can you explain this answer? covers all topics & solutions for Chemistry 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Select correctstatemet(s):a)When Cl2 is added to KI solution containing chloroform, chloroform turns violetb)KI gives violet vapors when treated with conc. H2SO4c)Ca+2 ion gives brick red color in flame testd)PH3 is colorless and has rotten fish smell or garlic like odourCorrect answer is option 'A,B,C,D'. Can you explain this answer?.
Solutions for Select correctstatemet(s):a)When Cl2 is added to KI solution containing chloroform, chloroform turns violetb)KI gives violet vapors when treated with conc. H2SO4c)Ca+2 ion gives brick red color in flame testd)PH3 is colorless and has rotten fish smell or garlic like odourCorrect answer is option 'A,B,C,D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry.
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Select correctstatemet(s):a)When Cl2 is added to KI solution containing chloroform, chloroform turns violetb)KI gives violet vapors when treated with conc. H2SO4c)Ca+2 ion gives brick red color in flame testd)PH3 is colorless and has rotten fish smell or garlic like odourCorrect answer is option 'A,B,C,D'. Can you explain this answer?, a detailed solution for Select correctstatemet(s):a)When Cl2 is added to KI solution containing chloroform, chloroform turns violetb)KI gives violet vapors when treated with conc. H2SO4c)Ca+2 ion gives brick red color in flame testd)PH3 is colorless and has rotten fish smell or garlic like odourCorrect answer is option 'A,B,C,D'. Can you explain this answer? has been provided alongside types of Select correctstatemet(s):a)When Cl2 is added to KI solution containing chloroform, chloroform turns violetb)KI gives violet vapors when treated with conc. H2SO4c)Ca+2 ion gives brick red color in flame testd)PH3 is colorless and has rotten fish smell or garlic like odourCorrect answer is option 'A,B,C,D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Select correctstatemet(s):a)When Cl2 is added to KI solution containing chloroform, chloroform turns violetb)KI gives violet vapors when treated with conc. H2SO4c)Ca+2 ion gives brick red color in flame testd)PH3 is colorless and has rotten fish smell or garlic like odourCorrect answer is option 'A,B,C,D'. Can you explain this answer? tests, examples and also practice Chemistry tests.
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