Which one of the following aqueous solutions will be basic ?
Which one of the following aqueous solutions will be basic ?
A. NaCI
B. Na2SO4
C. Na2CO3
D. FeCl3
A. NaCI
B. Na2SO4
C. Na2CO3
D. FeCl3
A. Hot air currents
B. folds of filter paper
C. oven
D. Vacuum desiccator
A. Flrorine
B. Chlorine
C. Bromine
D. Iodine
A. 1.008
B. 0.55
C. 0.184
D. 1.637
A. this acid, in ancient times, was used to eliminate ant-hills
B. this corrosive acid is secreted by ants to drive away their enemies
C. this acid was first obtained by the distillation of ants
D. ants are attracted by the odour of this acid
A. formula unit
B. empirical formula
C. molecular formula
D. formula mass