Electrolysis of dilute solution of NaCl results at the anode_______________?
A. sodium
B. hydrogen
C. chlorine
D. oxygen
Submitted by :- Jamil Ahmed
Carnalite has chemical formula__________________?
A. KCI
B. KCI.MgCl2.6H2O
C. Na2B4O7.1H2O
D. CaCO3.MgCO3
Submitted by :- Jamil Ahmed
NaOH is named as caustic soda because________________?
A. It corrodes the organic tissues
B. It is used in soda water
C. It reacts with chlorine gas
D. It reacts with fats to form soap
Submitted by :- Jamil Ahmed
First ionization potential of alkaline earth metal is greater than alkali metals because___________________?
A. They are more reactive
B. They have greater atomic radii
C. They have smaller atomic sizes
D. All
Submitted by :- Jamil Ahmed
Alkali and alkaline earth metals impart colours when heated over burner. It is due to______________?
A. Smaller electronegativity of alkali metals
B. Smaller ionic radius of these metals
C. De-excitation of electrons from higher energy levels to low energy level
D. Excitation of electrons from low energy levels to higher energy levels
Submitted by :- Jamil Ahmed
In diaphragm cell level of brine in anode compartment is kept slightly higher which prevents_______________?
A. Hydroxide ions to reach anode
B. Chlorine gas to mix
C. Cathode to decay
D. All of the above
Submitted by :- Jamil Ahmed
The deliquescence is a property in which a solid____________________?
A. Absorbs moisture and remains solid
B. Absorbs moisture and turns to liquid form
C. Loses water of crystallization
D. Increases the number of water of crystallization
Submitted by :- Jamil Ahmed
Which one of the following gives white precipitate with aqueous solution of BaCl2?
a. NaHCO3
B. NaNO3
C. Na2CO3
D. Na2CrO4
Submitted by :- Jamil Ahmed
Gypsum is applied to the soil as a source of________________?
A. Ca and P
B. S and P
C. Ca and S
D. we could not apply
Submitted by :- Jamil Ahmed