CBSE
Multiple Choice QuestionsThe number of S - S bonds in sulphur trioxide trimer (S3O9) is
three
two
one
zero
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
What is the correct relationship between the pHs of isomolar solutions of sodium oxide (pH1), sodium sulphide (pH2), sodium selenide (pH3) and sodium telluride (pH4)?
pH1 > pH2 = pH3 =pH4
pH1 <pH2 < pH3 <pH4
pH1 < pH2 > pH3< pH4
pH1> pH2 > pH3 > pH4
Which acid has P - P linkage?
Hypophosphoric acid
Pyrophosphoric acid
Metaphosphoric acid
Orthophosphoric acid
When fluorine reacts with hot and conc. NaOH , it gives :
Na2O
Na
H2
O2
Which of the following is not hydrolysed ?
AsCl3
PF3
SbCl3
NF3
There is no S-S bond in :
S2O42-
S2O52-
S2O32-
S2O72-
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
End product of the hydrolysis of XeF6 is :
XeOF4
XeO2F2
XeO3
XeOF3
XeF6 on complete hydrolysis produces
XeOF4
XeO2F2
XeO3
XeO2
