A elements are named as alkali metals because_______________?
A. Their oxides are basic B. Their oxide and hydroxides are water soluble C. Both A & B D. They are found in earth
Chemistry MCQs
Formula of Chile saltpetre is__________________?
A. NaNO3 B. CaCO3 C. Ba (NO3)2 D. NH4Cl
The oxides of beryllium BeO is_______________?
A. Acidic B. Basic C. Amphoteric D. Neutral
Li is different from its family members due to____________________?
A. small size B. high charge density C. less electropositivity D. all of the above
Carbonates of lithium are not stable like that of sodium due to________________?
A. Low electronegativity B. Low electropositivity C. Low charge density D. Not known yet
Which one of the following is not an alkali metal ?
A. Francium B. Caesium C. Rubidium D. Radium
The element cesium bears resemblance with________________?
A. Ca B. Cr C. Both of the above D. None of the above
Downs cell is used to prepare_________________?
A. Sodium carbonate B. Sodium bicarbonate C. Sodium metal D. Sodium hydroxide
Ammonia may be prepared by heating ammonium chloride with_______________?
A. Water B. NaCl C. Aqueous sodium hydroxide D. H2SO4
Crystals of Na2CO3. 10H2O when exposed to air_________________?
A. Lose water and remain solid B. Gain water and remain solid C. Gain water and become liquid D. Remains unchanged