Home/Aldehyde and ketones
Relative Reactivity of carbonyls
Question#1
Identify the product Y in the sequence \( CH_3-CHO + CH_3-Mg-I \xrightarrow{ether} X \ \xrightarrow{H2O/H+} Y \) [Kerala (Med.) 2001]
Question#2
\( CH_3-Mg-Br + \) \( \rightarrow product \xrightarrow{H2O} A \) What is A ? [RPMT 1997]
Question#3
An important reaction of acetone is autocondensation in presence of concentrated sulphuric acid to give the aromatic compound [KCET 2003; MP PET 1986, 89; MP PMT 1992, 2000]
Question#4
The typical reactions of aldehyde is [Pb. CET 1986]
Question#5
Acetaldehyde reacts with [CBSE PMT 1991]
Question#6
Correct order of reactivity of CH 3CHO, C2H5 COCH and CH 3COCH 3 is [MP PMT 1991]
Increasing alkyl group the reactivity decreases.
Question#7
Which of the following products is formed when benzaldehyde is treated with CH3-MgBr and the addition product so obtained is subjected to acid hydrolysis [Haryana CEET 2000]
\( C_6H_5CHO \xrightarrow[H3O+]{CH3-MgBr} C_6H_5-CH(OH)-CH_3 \)
Question#8
Identify the reactant X and the product Y
\( CH_3-CO-CH_3 + X \rightarrow (CH_3)_3C-OMg-Cl + \xrightarrow{Hydrolysis} Y + Mg(OH)Cl \) [Kerala PMT 2003]
Question#9
Which of the following on reaction with NH 3 gives urinary antiseptic compound [MP PMT 1999]
Question#10
Which of the aldehyde is most reactive ? [DCE 2004]
Among Carbonyl Compounds, reactivity decrease with increase in alkyl groups as alkyl groups (+I effect) decrease positive character on C-atom. Thus, the correct order of reactivity is HCHO > CH3CHO > C6H5CHO
Question#11
Which of the following is the reducing agent NUMS2015
Question#12
Which of the following is the reducing agent NUMS2015