HF is not preserved in glass bottle because :
it reacts with the visible part of the light
it reacts with the sodium oxide of the glass
it reacts with the aluminium oxide of the glass composition
it reacts with SiO2 of the glass
Which of the following is not hydrolysed ?
AsCl3
PF3
SbCl3
NF3
D.
NF3
Nitrogen forms NF3 ; the electron donating tendency is minimum in NF3 .It is not hydrolysed because in NF3 due to absence of 2d - orbital in N atom ,it cannot accept electron from H2O for hydrolysis of NF3 .
Which acid has P - P linkage?
Hypophosphoric acid
Pyrophosphoric acid
Metaphosphoric acid
Orthophosphoric acid
Which statement is wrong for NO ?
It is anhydride of nitrous acid
Its dipole moment is 0.22 D
It forms dimer
It is paramagnetic
Assertion : Bleaching powder reacts with dilute acids to evolve chlorine.
Reason : The chlorine liberated by the action of dilute acids on bleaching powder is called available chlorine.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion : Liquid NH3,is used for refrigeration.
Reason : Liquid NH3 quickly vapourises.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.