A. 42 Gallons
B. 156 Liters
C. 186 Liters
D. 158.9 Liters

A. Oxygen
B. Hydrogen
C. Nitrogen
D. Helium

A. Nitrogen
B. Methane
C. Carbon dioxide
D. Hydrogen

A. An acidic oxide
B. A basic oxide
C. A neutral oxide
D. An atmospheric oxide

A. Alumina
B. Calcium oxide
C. Gypsum
D. Silica

A. Bronze
B. Aluminium bronze
C. German silver
D. Phosphorus bronze

A. Brass
B. Bronze
C. Gunmetal
D. German silver

A. Phytometer
B. Cytometer
C. Potometer
D. Crescograph

A. Gastric juice
B. Optic nerve
C. Sperm
D. Dandruff

A. Oxygen,-iron, and potassium.
B. Oxygen, iron and silicon
C. Silicon, aluminum and oxygen
D. Silicon, iron, and magnesium