Q48. Which of the following compounds will give silver mirror with ammoniacal silver nitrate? A. Formic acid B. Formaldehyde C. Benzaldehyde D. Acetone Choose the correct answer from the options given below :\\
(1) A, B and C only\\
(2) C and D only\\
(3) B and C only\\
(4) A only
Q49.\\
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(1)\\
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(2)\\
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(3)\\
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(4)\\
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