Subject - Chemistry Chapter - Non Metals There are 20 multiple choice questions scoring 3 for each. There are 20 true or false questions scoring 2 for each. Overall 40 questions in 45 minutes.
Dry air
Moisture
Sunlight
Pure oxygen
Nitrogen
Oxygen
Sulfur dioxide
Phosphene
Cupric oxide
Mercuric oxide
Zinc oxide
Aluminium oxide
Iodine solution
Chlorine solution
Sodium chloride
Potassium iodide
Cesium
Silicon
Tin
Titanium
Diamond
Silica
Carborundum
Graphite
Diamond is a bad conductor of heat and electricity
Diamond crystalizes in the body centered cubic lattice
The C-C bond length of diamond is 154pm
Diamond is more dense than graphite.
Phosphorus is a element in Group 15
Phosphorus is obtained by heating the rock phosphate with coke and sand in an electrical furnace around 1800 K
The phosphorus molecule contains four atoms
Black phosphorus is the least stable form of the allotropes of phosphorus
No unpaired electrons
One unpaired electron
Two unpaired electrons
Four unpaired electrons
A fast oxidizing agent
A powerful oxidizing agent
A bent molecule
A stable allotrope
Yellow
Red
Green
Violet
Rhombic sulfur
Monoclinic sulfur
Amorphus sulfur
Plastic sulfur
Decrease
Increase
Remain unchanged
Become double
White
Red
Black
Yellow
Linear
Square planar
Tetrahedral
Octahedral
Fluorine
Chlorine
Bromine
Iodine
Fluorine
Chlorine
Bromine
Iodine
In air
Under water
Under kerosene
Under carbon disulfide
Chloropatite
Fool's gold
Sphalerite
Chalcopyrite
It is non poisonous
It glows in dark
It has a low ignition temperature
It is a powerful reducing agent
True
False
True
False
True
False
True
False
True
False