Alum is a water purifier because it
coagulates the impurities
softens hard water
gives taste
destroys the pathogenic bacteria
Ethyl chloride on heating with AgCN forms a compound X. The functional isomer of X is
C2H5NC
C2H5NH2
C2H5CN
None of these
20 mL of 0.5 N HCl and 35 mL of 0.1 N NaOH are mixed. The resulting solution will
be neutra
be basic
turn phenolphthalein solution pink
turn methyl orange red
A commercial sample of hydrogen peroxide is labelled as is volume. Its percentage strength is nearly
1%
3%
10%
90%
Activated charcoal is used to remove colouring matter from pure substances. It works by
oxidation
reduction
bleaching
adsorption
A gas decolourised by KMnO4 solution but gives no precipitate with ammoniacal cuprous chloride is
ethane
methane
ethene
acetylene
C.
ethene
Decolourisation of KMnO4 (unsaturation test)
H3C-C(Cl) = CH - CH(CH3) - CH3
2-chloro-4-methyl-2pentene
4-chloro-2-methyl-3-pentene
4-methyl-2-chloro-2-pentene
2-chloro-4,4-dimethyl-2-butene
Amongst the following the compound that can most readily get sulphonated is
benzene
toluene
nitrobenzene
chlorobenzene