S Block Elements - Topic Wise Multiple Choice Questions (MCQ)
1 )
Which of the following is not correct for work function of Na+ ions in human body?
An important role in nerve signal transmission.
Control of flow of water between cell membrane.
For transport of sugar and amino acid in cell.
They activate the enzyme. ✔
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2 )
KO2 is used in oxygen cylinders in space and submarines because it...
absorbs CO2 and increases O2 content ✔
eliminates moisture
produces ozone
None of the above.
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3 )
Which of the following is not a Mg ore?
Magnesite
Gypsum ✔
Dolomite
Carnalite
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4 )
The name “Blue John” is given to which of the following compounds.
CaH2
CaF2 ✔
Ca3(PO4)2
CaO
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5 )
The alkali metals are low melting. Which of the following alkali metal is expected to melt if the room temperature rises to 300 c?
Na
K
Rb
Cs ✔
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