Home/Aldehyde and ketones
preparation of Ald & Ket
Question#1
Grignard reagent on reaction with acetone forms [BHU 1995; RPMT 2002; Roorkee 1990]
Question#2
An alkene of molecular formula C9H18 on ozonolysis gives 2,2 dimethyl propanal & 2-butanon, then the alkene is [Kerala CET 2005]
Question#3
When a mixture of methane and oxygen is passed through heated molybdenum oxide, the main product formed is [KCET 2004]
Question#4
Ethyne on reaction with water in the presence of HgSO4 and H2SO4 gives [UPSEAT 1999; BVP 2003]
Question#5
O3 reacts with CH2 =CH2 to form ozonide. On hydrolysis it forms [MP PET 1986, 90]
Question#6
Hydrolysis of ozonide of 1-butene gives [Kerala PMT 2003]
Question#7
Propyne on hydrolysis in presence of HCl and HgSO4 gives [DPMT 1980]
Question#8
CH3- CO-CH3 can be obtained by [CBSE PMT 1992]
Question#9
Methyl ethyl ketone is prepared by the oxidation of [IIT-JEE 1987; MP PMT 1992]
Question#10
Which of the following compound gives a ketone with Grignard reagent [CPMT 1988; MP PET 1997]
Question#11
On heating calcium acetate and calcium formate, the product formed is [DPMT 1984; EAMCET 1985; MP PMT 1996, 92; KCET 1990; CPMT 1979, 82, 84; BIT 1992; RPET 2000]
Question#12
Acetophenone is prepared by the reaction of which of the following in the presence of AlCl3 catalyst[AIIMS 1996]
Question#13
Dry heating of calcium acetate gives [DPMT 1979, 81, 96; NCERT 1981; KCET 1993; Bihar CEE 1995; MNR 1986; MP PMT 1997; MP PET 1993, 95; JIPMER 2002; AIIMS 1996; CPMT 1982, 86, 96, 2003; RPMT 2002]
Question#14
\( CH_3-CH_2-C \equiv CH \xrightarrow[R]{H2O} Butanone \) , R is [BHU 2003]
\( CH_3-CH_2-C \equiv CH \xrightarrow[HgSO4]{H2O} Butanone \)
Question#15
The end product in the following sequence of reaction is [Bihar CEE 2002]
\( CH \equiv CH \xrightarrow[ HgSO4]{ H2SO4} A \xrightarrow[H2O]{CH3MgBr} B \xrightarrow{[O]} ? \)
\( CH \equiv CH \xrightarrow[HgSO4]{H2SO4} CH_3-CHO \xrightarrow[H2O]{CH3MgBr} CH_3-CH(OH)-CH_3 \xrightarrow{[O]} CH_3-CO_CH_3 \)
Question#16
Question#17
formalin is an aqueous solution of NUMS2017
Question#18
Question#19
Na2Cr2O7 what the product will be when secondary alcohols are oxidized in same condition MDCAT2011
In the presence of K2Cr2O7
\( 1^o alcohol \ \xrightarrow{[O]} \ ald \) immediately distilled off the product otherwise it would converted into carboxylic acid
\( 2^o alcohol \ \xrightarrow{[O]} \ ketone \)
\( 3^o alcohol \ \xrightarrow{[O]} \ no \ reaction \)
Question#20
Dry distillation of calcium salt of acetic acid and formic acid results into formation of MDCAT2010
Question#21
In the conversion of ethylene into acetaldehyde, cupric chloride acts as MDCAT2009
The Wacker process refers to the oxidation of ethylene to acetaldehyde in the presence of palladium(II) chloride and copper(II) chloride as the catalyst.
Question#22
Aldehyde can be synthesized by the oxidation of MDCAT2008