Magnetic force, electrostatic force and gravitational force are all three non-contact forces. The only left force is muscular force. This means that muscular force is not a non-contact force.
Which of the following is the richest source of phosphorus?
Cinnabar is an ore of which metal?
Hydrogen was discovered by:
What are proteins chemically composed of?
Gunpowder consists of a mixture of:
The rate of evaporation increases with ______.
Which mineral is the ore Of aluminium ?
Radon, used in radiotherapy, belongs to which group on the periodic table?
Which chemical compound is used in the indelible ink for elections?
Identify the element that is NOT a metalloid.
