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.Management Sciences
Category: S-BLOCK ELEMENTS
Carbonates of lithium are not stable like that of sodium due to________________?
0
A. Low electronegativity
B. Low electropositivity
C. Low charge density
D. Not known yet
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
Addition of 2% gypsum in cement________________?
A. Triggers hydration
B. Triggers hydrolysis
C. Prevents rapid hardening
D. all of the above
The element cesium bears resemblance with________________?
A. Ca
B. Cr
C. Both of the above
D. None of the above
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
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