Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-conceptual-Hard-Class 12
Which of the following statements about the cobalt nitrate test and residue observations is correct?
A
A white residue indicates a positive cobalt nitrate test.
B
A yellow residue when hot indicates the presence of Zn2+ ions.
C
Cobalt nitrate test is conducted only if a positive result is obtained from dilute H2SO4.
D
A brown-red precipitate forms when acetate reacts with ferric chloride solution.
Correct Answer
Option B
Detailed Explanation
The statement about the yellow residue when hot indicating Zn2+ is supported by the observations noted in Table 7.10, while the other options contain inaccuracies regarding the cobalt nitrate test and the reactions with ferric chloride.
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