Bronze is an alloy of ____________?
A. Copper and zinc
B. Tin and zinc
C. Copper and tin
D. Iron and zinc
Bronze medal is made up of metals ?
A. Copper,nickel
B. Copper, tin
C. Copper, silver
D. Copper, zinc
Hygrometer is used for measuring the ____________?
A. Speed of sound
B. Density of milk
C. Humidity of air
D. Specific gravity of liquids
Dry ice is ___________?
A. Methane hydrate
B. Liquid nitrogen
C. Solid carbon dioxide
D. Frozen water
Chemical used to kill rats and mice are ?
A. Insecticides
B. Rodenticides
C. Fungicides
D. Herbicides
Founder of modern astronomy was _________________?
A. Archimedes
B. William gilbert
C. Nicolas copernicus
D. Michael faraday