The metal that does not give the borax bead test is
Chromium
nickel
lead
manganese
C.
lead
Only coloured salts give borax-bead test. Salts of lead are not coloured.
A white solid 'A' on heating gives off a gas which turns lime water milky. The residue is yellow when hot but turns white on cooling. This solid 'A' is
zinc sulphate
zinc carbonate
lead sulphate
lead carbonate
Which of the following compounds exhibits optical isomerism?
CH3CH2COOH
CH3CHOHCOOH
CH3CH2CH2OH
CH3CHOHCH3
Gasoline is obtained from crude petroleum oil by its
fractional distillation
vacuum distillation
steam distillation
pyrolysis
Alkene which on ozonolysis yields acetone, is
CH2=CH-CH2-CH3
CH3-CH=CH2
CH3-CH=CH-CH3
(CH3)2-C=C-(CH3)2