CBSE
Multiple Choice QuestionsClemmensen reduction of a ketone is carried out in the presence of which of the following?
Zn-Hg with HCl
LiAlH4
H2 and Pt as catalyst
Glycol with KOH
In electrophilic aromatic substitution reaction, the nitro group is meta directing because it
decreases electron density at ortho and para positions
decreases electron density at meta position
increases electron density at meta position
ncreases electron density at ortho and para positions
CH3COOH Y X
Here, X is
glycollic acid
-hydroxy propionic acid
succinic acid
malonic acid
Sugars are seperated by using the solvent BAW (n-butanol acetic acid -HO) and detected by spraying the plate with
aniline hydrogen phthalate solution
hydrogen peroxide solution
crystals of I2
cupric oxide
Which of the following is not a resonating form of benzaldehyde?
Which one of the following does not undergo iodoform reaction?
Secondary butyl alcohol
Iso-propyl alcohol
Diethyl ketone
Ethyl alcohol
The compound which is not formed during the dry distillation of a mixture of calcium formate and calcium acetate is
methanal
propanal
propanone
ethanal
Which of the following reagents converts both acetaldehyde and acetone to alkanes ?
Ni/H2
LiAlH4
I2/ NaOH
Zn-Hg/ conc. HCl
Product 'Q' is
an amide
an amine
nitro compound
nitrile compound
The compound which forms acetaldehyde when heated with dilute NaOH, is
1,1-dichloroethane
1,1,1-trichloroethane
1-chloroethane
1,2-dichloroethane
