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JEE CHEMISTRY MCQ: P-BLOCK ELEMENTS
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Medium
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Analyzing
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When water is added to an aqueous solution of potassium halide in presence of chloroform a violet colour is obtained. On adding more of water, the violet colour disappears and a colourless solution is obtained. This test confirms the presence of the following in aqueous solution:
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Correct option: A
Iodide
Option A (Iodide) is correct because the violet color in chloroform indicates the presence of iodine, which is formed by the reaction of iodide with chlorine water. The disappearance of the color with excess chlorine water indicates further oxidation of iodine.
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(iv) One of the major use of is in the manufacture of fertilizers.
Which of the following is the correct code for the statements above?
Reason: Ozone is diamagnetic but is paramagnetic. Which of the following is kept in water? ion and are isoelectronic but in contrast to is chemically inert because of: Consider the following statements
(i) Reaction shows reducing character of sulphur dioxide
(ii) contains four , two and one bond
(iii) gas can be dried effectively by using conc. .
(iv) One of the major use of is in the manufacture of fertilizers.
Which of the following is the correct code for the statements above?