When H2S is passed through HNO3 solution, the product formed is
Milk of S
Colloidal S
Υ-S
β-S
Which compound has bond angle nearly 90°?
NH2
SO2
H2O
H2S
'In Kipp's apparatus. H2S is prepared
Continuously
By FeS + Conc. H2SO4
By FeS + dil. H2SO4
By Fe + dil. H2SO4
Ozone reacts with
C2H4
C2H2
C6H6
All
The reaction in the Kipp's apparatus stops when the outlet is closed from the top because
The acid become weak
Gas pressure breaks the contact between FeS and the acid
Gas starts coming out
Protective film is formed on FeS
Which metal sticks to a glass plate after treatment with ozone
Silver
Mercury
Copper
Lead
H2SO4 has very corrosive action on skin because
It reacts with proteins
It acts as dehydrating agent and absorption of water is highly exothermic
It acts as oxidizing agent
It has bleaching action
Which one has the highest bond energy?
O-O
S-S
Se-Se
Te-Te
Which hydride is most acidic?
H2Te
H2Se
Number of hydroxyl groups present in pyrosulphuric acid is
3
4
6
2
