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.Management Sciences
Category: S-BLOCK ELEMENTS
Downs cell is used to prepare_________________?
A. Sodium carbonate
B. Sodium bicarbonate
C. Sodium metal
D. Sodium hydroxide
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
In diaphragm cell hydrogen is discharged by the reduction of__________________?
A. Water
B. HCI
C. Na+
D. NaCl
Which one of the following gives white precipitate with aqueous solution of BaCl2?
A. NaHCO3
B. NaNO3
C. Na2CO3
D. Na2CrO4
Which one of the following pairs shown diagonal relationship in the periodic table ?
A. Sodium and Lithium
B. Lithium and magnesium
C. Lithium and beryllium
D. Boron and Beryllium
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
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
Ammonia may be prepared by heating ammonium chloride with_______________?
A. Water
B. NaCl
C. Aqueous sodium hydroxide
D. H2SO4
Which of the following sulphates is not soluble in water ?
A. Sodium sulphate
B. Potassium sulphate
C. Zinc sulphate
D. Barium sulphate
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