MEDIUM
JEE Main
IMPORTANT
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Diborane B2H6 reacts independently with O2 and H2O to produce, respectively:

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Important Questions on The p-Block Elements

MEDIUM
JEE Main
IMPORTANT
When metal M is treated with NaOH, a white gelatinous precipitate X is obtained, which is soluble in excess of NaOH. Compound X when heated strongly gives an oxide which is used in chromatography as an adsorbent. The metal M is
MEDIUM
JEE Main
IMPORTANT
The compound that does not produce nitrogen gas by thermal decomposition is:
MEDIUM
JEE Main
IMPORTANT
The number of S=O and S-OH bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are:
MEDIUM
JEE Main
IMPORTANT

In the following reactions, products A and B , respectively, are:
NaOH+Cl2A+side products
hot and conc.


CaOH2+Cl2B+side products
dry

HARD
JEE Main
IMPORTANT
The ammonia NH3 released on quantitative reaction of 0.6 g urea NH2CONH2 with sodium hydroxide NaOH can be neutralized by
EASY
JEE Main
IMPORTANT
The electron gain enthalpy (in kJmol ) of fluorine, chlorine, bromine and iodine, respectively, are
HARD
JEE Main
IMPORTANT
Chlorine reacts with hot and concentrated NaOH and produces compounds X and Y. Compound X gives white precipitate with silver nitrate solution. The average bond order between Cl and O atoms in Y is _______________.