A. without any change in the weight of the nail
B. with a decrease in the weight of the nail
C. with an increase in the weight of the nail
D. without any change in color or weight of the nail
Correct Answer: C. with an increase in the weight of the nail
A. Esters of heavy fatty acids
B. Salts of silicates
C. Mixture of glycerol and alcohols
D. Sodium or potassium salts of heavier fatty acids
Correct Answer: D. Sodium or potassium salts of heavier fatty acids
A. Aeroplane
B. Lightwaves
C. Ship
D. Sound waves
Correct Answer: C. Ship
A. hydrogen
B. ethane
C. nitrogen
D. methane
Correct Answer: D. methane
A. cellulose
B. pectin
C. glucose
D. amylase
Correct Answer: A. cellulose
A. snow
B. storm
C. rainfall
D. intense heat
Correct Answer: C. rainfall
A. 1 cm
B. 1 m
C. 10 micron
D. 1 angstrom
Correct Answer: D. 1 angstrom
A. Teflon
B. Black paint
C. PVC
D. Polystyrene
Correct Answer: A. Teflon
A. Hydrogen
B. Sulfur
C. Carbon
D. Oxygen
Correct Answer: A. Hydrogen
A. Gypsum and Clay
B. Limestone and Clay
C. Clay
D. Limestone
Correct Answer: B. Limestone and Clay