A. Silver
B. Gold
C. Platinum
D. Aluminium oxide
A. John dalton
B. E.rutherford
C. De broglie
D. i.mendeleef
A. Oxygen
B. Nitrogen
C. Hydrogen
D. Carbon dioxide
A. Ethyl alcohol
B. Glycerol
C. Glycol
D. Methyl alcohol
A. Zinc
B. Lead
C. Carbon
D. Tin
A. Copper sulfate
B. Magnesium sulfate
C. Ferrous sulfate
D. None of these
A. Epsom salt
B. Gypsum salt
C. Blue vitriol
D. Potash alum
A. Nitric acid
B. Hydrochloric acid
C. Phosphoric acid
D. Sulfuric acid
A. Calcium
B. Chondroitin sulfate
C. Boron
D. Phosphate
A. Blood
B. Lungs
C. Eyes
D. Nerves