Lassaigne's test is used to detect :
nitrogen and halogens
sodium and halogens
halogens and sulphur
nitrogen, sulphur and halogens
Disymmetric object is one which is:
superimposable on its mirror image
non-superimposable on its mirror image
optically inactive
achiral
Cycloalkane has the formula :
CnH2n+2
CnH2n-2
CnH2n
C2nH2
C.
CnH2n
Cycloalkanes have the formula CnH2n.
To differentiate between carbon-12, carbon-13 and carbon-14, the instrument that you would use is :
infra-red spectrometer
atomic absorption spectrometer
mass spectrometer
ultraviolet spectrometer
A mixture of sand and iodine can be separated by:
crystallisation
sublimation
distillation
fractionation