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Chemistry
List of top Chemistry Questions on p -Block Elements
A black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with
$NH_3$
an unstable trihalide is formed. In this process the oxidation state of nitrogen changes from
Chemistry
p -Block Elements
A 500 g toothpaste sample gas 0.2 h fluoride concentration. What is the concentration of
$F^-$
ions in terms of ppm level ?
Chemistry
p -Block Elements
Atomic no.
$81$
is placed in
Chemistry
p -Block Elements
Which one of the following statements regarding ammonia is not correct?
Chemistry
p -Block Elements
The correct order of reactivity of halogen is
Chemistry
p -Block Elements
Which one of the following liberate bromine when reacted with
$KBr$
?
Chemistry
p -Block Elements
Ozone is used for purifying water because
Chemistry
p -Block Elements
Which of the following is a tribasic acid?
Chemistry
p -Block Elements
The aqueous solution/liquid that absorbs nitric oxide to a considerable extent is:
KEAM
Chemistry
p -Block Elements
The relative strengths of trichlorides of boron group to accept a pair of electron is given by
KEAM
Chemistry
p -Block Elements
Which hydride amongst the following has the least boiling point?
KEAM
Chemistry
p -Block Elements
$B(OH)_3$
is a
KEAM
Chemistry
p -Block Elements
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