Q.1.
Which of the following ion has maximum oxidising power
Q.2.
What was the name of the combination of chlorine gas and carbon monoxide gas that wastimes more powerful than Chlorine?
Q.3.
ZnO + 2NaOH
Q.4.
White phosphorous has characteristic
Q.5.
All elements in the Halogen family react violently because
Q.6.
Conc HNO3 is yellow in colour due to presence of
Q.7.
Chalcogens are
Q.8.
Radioactive gas often found in basements. Formed from the radioactive decay of Radium.
Q.9.
Most reactive elemental gas.
Q.10.
Least reactive noble gas.
Q.11.
Glows red/orange when electricity is passed through it.
Q.12.
Balance the ionic equation:Cl2 + KBr → Br+ KCl
Q.13.
How many valence electrons are in the element iodine?
Q.14.
Name most metallic element in Group 14
Q.15.
States of groupelements are ...
Q.16.
What is the oxidation number of Oxygen in OF2?
Q.17.
Correct order of boiling point is
Q.18.
The molecular shape of SF4 is
Q.19.
Hydrogen bonding does NOT play any role in the boiling point of
Q.20.
Silicones are inert and non-toxic because silicones