A. 60
B. 70
C. 80
D. 90
A. Water
B. Hexane
C. Dimethylflormamide
D. Ethanol
A. whole amount of reactant does not change into product
B. chemical equilibrium is established
C. a catalyst changes the direction of reaction
D. rate of forward reaction decreases as reaction proceeds
A. Filtration
B. Crystallization
C. Solvent extraction
D. Chromatography
A. 2 amino groups and 1 carboxylic group
B. 1 amino and 1 carboxylic groups
C. 2 carboxylic groups and 1 amino group
D. 2 amino and 2 carboxylic groups
A. to dry the moisture of slurry
B. to decompose lime stone to unslaked lime
C. combination of different oxides like CaO SiO2 Fe2O3 and Al2O3
D. to reduce the impurities
A. Ion dipole forces
B. London forces
C. Hydrogen bonding
D. Dipole dipole forces