CBSE
Multiple Choice QuestionsChloroform , on exposing to air and sunlight produce :
chloropicrin
phosgene
carbon tetrachloride
benzene
The use of CCl4 as fire extinguisher depends on the fact that :
it is an inorganic compound
it is an organic compound
its vapour is much heavier than air and non-combustible
it is a compound of chlorine
Boiling point of benzene is 353.23 K. When 1.8 g of non-volatile solute is dissolved in 90 g of benzene. Then boiling point is raised to 354.11 K. Given Kb (benzene) = 2.5 kg mol-1. The molecular mass of non-volatile substance is
58 g mol-1
120 g mol-1
116 g mol-1
60 g mol-1
The product formed by the reaction between acetylene and HOCl :
ethylene chloride
vinyl chloride
dichloro acetaldehyde
ethyledene chloride
The product of reaction between chloroform and acetone is used as :
insecticide
analgesic
hypnotic
war gas
Which of the following is true for an ideal solution?
H(mix) = 0
S(mix) = 0
G(mix) = 0
None of these
Which of the following does not give nitroalkane?
CH3-N(CH3)-CH3
C2H5I
CH3 - CH3
Both (a) and (b)
Tertiary alkyl halides are practically inert towards substitution by SN2 mechanism because of :
steric hindrance
inductive effect
instability
insolubility
But-1-ene
The product in the above reaction is
CH3CH2CH2CH2OH
CH3CH2CH(OH)CH3
CH2=CH2CH(OH)-CH3
CH3-CH=C(OH)-CH3
R-X R-NO3 , for the completion of the reaction suitable reagent is :
NO2
NaNO2
AgNO2
NaNO2 + dil. HCl
