A. KCI
B. KCI.MgCl2.6H2O
C. Na2B4O7.10H2O
D. CaCO3.MgCO3
Carnalite has chemical formula__________________? Read More »
Chemistry Mcqs, S-BLOCK ELEMENTS 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
NaOH is named as caustic soda because________________? Read More »
Chemistry Mcqs, S-BLOCK ELEMENTS A. They are more reactive
B. They have greater atomic radii
C. They have smaller atomic sizes
D. All
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
A. Hydroxide ions to reach anode
B. Chlorine gas to mix
C. Cathode to decay
D. All of the above
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
The deliquescence is a property in which a solid____________________? Read More »
Chemistry Mcqs, S-BLOCK ELEMENTS A. NaHCO3
B. NaNO3
C. Na2CO3
D. Na2CrO4
Which one of the following gives white precipitate with aqueous solution of BaCl2? Read More »
Chemistry Mcqs, S-BLOCK ELEMENTS A. Lose water and remain solid
B. Gain water and remain solid
C. Gain water and become liquid
D. Remains unchanged
Crystals of Na2CO3. 10H2O when exposed to air_________________? Read More »
Chemistry Mcqs, S-BLOCK ELEMENTS A. Water
B. NaCl
C. Aqueous sodium hydroxide
D. H2SO4
Ammonia may be prepared by heating ammonium chloride with_______________? Read More »
Chemistry Mcqs, S-BLOCK ELEMENTS A. Sodium carbonate
B. Sodium bicarbonate
C. Sodium metal
D. Sodium hydroxide
Downs cell is used to prepare_________________? Read More »
Chemistry Mcqs, S-BLOCK ELEMENTS