The p-Block Elements - Online Test
Q1. The brown ring test for nitrates depends on
Answer : Option C
Explaination / Solution:
in ring test of nitrates nitrate ion is reduced to nitric oxide.
Q2. One mole of magnesium nitride on the reaction with an excess of water gives:
Answer : Option C
Explaination / Solution:
on hydrolysis roduces two moles of ammonia.
Q3. Argon is used
Answer : Option A
Explaination / Solution:
Ar is used in high temperature welding to provide inert atmosphere.
Q4. Atoms in a molecule of white phosphorus are arranged regularly in the following way
Answer : Option D
Explaination / Solution:
in P4 four P atoms are arranged at the corners of tetrahedron.
