If it is assumed that decays only by emitting -and (-particles, the possible product of the decay is
The reaction that takes place when Cl2 gas is passed through conc. NaOH solution is
oxidation
reduction
displacement
disproportionation
Blackened oil painting can be restored into original form by the action of
Cl2
BaO2
H2O2
MnO2
C.
H2O2
The lead of oil paintings gets converted into lead sulphide by atmospheric H2S leading to blackening of paintings. Hydrogen peroxide (H2O2) oxidises the black lead sulphide into white lead sulphate, thus restores the colour of oil painting.
Which of the following statements is not correct?
Silicon is extensively used as a semiconductor
Carborundum is SiC
Silicon occurs in free state in nature
Mica contains the element silicon
The addition of HBr to 2-pentene gives
2-bromopentane only
3-bromopentane only
2-bromopentane and 3-bromopentane
1-bromopentane and 3-bromopentane
ethylene can be separated from acetylene by passing the mixture through
fuming H2SO4
pyrogallol
ammoniacal Cu2Cl2
charcoal powder
In the compound the hybridisation of C-2 and C-3 carbons are respectively
sp3 and sp3
sp2 and sp3
sp2 and sp
sp3 and sp
The two structures written below represent
pair of diastereomers
pair of enantiomers
same molecule
both are optically inactive