Pure silicon doped with phosphorus is a
metallic conductor
insulator
n-type semiconductor
p-type semiconductor
IUPAC name of the following compound
N, N- dimethylcyclopropane carboxamide
N-methylcyclopropanamide
cyclopropionamide
None of the above
The product of following reaction is
2CH3MgBr + CH2O
CH3OH
C2H5OH
CH4
C2H6
B.
C2H5OH
The product of the above given reaction is C2H5OH. The reaction can be expanded as follows:
CH3CH2OH can also be written as C2H5OH.
Sodium formate on heating gives
oxalic acid and H2
sodium oxalate and H2
sodium oxalate
CO2 and caustic soda
Which does not give a precipitate with AgNO3 solution?
[Co(NH3)6]Cl3
[Co(NH3)5Cl]Cl2
[Co(NH3)4Cl2]Cl
[Co(NH3)3Cl3]
Total volume of atoms present in a face centred cubic unit cell of a metal is (r is atomic radius)
Gold number is associated with
amount of gold
protective colloids
purple of cassius
electrophoresis
Noble gases are used in discharge tubes to give different colours. Reddish-orange glow is due to
Ar
Ne
Xe
Kr