Name the metal which has lowest density:
Lithium
Iridium
Aluminium
Copper
Certain metallic oxides reduced with aluminium rather than
Carbon
Hydrogen
Nitrogen
What is defined as the mass of a unit volume of a substance?
Density
Volume
Mass
Lustre
__________ is classified as a strategic element.
Titanium
Calcium
______________ are heated in presence of air.
Roasting
Calcination
Heating
Rusting
Arsenic is a
Metal
Non metal
Metalloid
Conductor
A chemical process is used for obtaining a metal from its oxide.
Oxidation
Reduction
Redox
Electrolysis
Cu2S + 2Cu2O → 6Cu + SO2
In which process of metallurgy of copper, above equation is involved -
Self reduction
Refining
Purification
Which fruit is used for restoring the shine of tornished copper decoration?
Lemon
Apple
Mango
Banana
Who are the good conductors of heat and electricity?
Metals
Non metals
Electrons
Plastic