MCQ
Carborundum is
- ✓$SiC$
- B$AlC{l_3}$
- C$A{l_2}{(S{O_4})_3}$
- D$A{l_2}{O_3}\,.\,2{H_2}O$
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(Molar mass of $Na_2CO_3 = 106\ g\ mol^{-1} )$
(Given : $R =8.3 \,J \,K ^{-1}\, mol ^{-1}$ )
Oxygen $(61.4\%);$ Carbon $(22.9\%),$ Hydrogen $(10.0\%);$ and Nitrogen $(2.6\%).$ The weight which a $75\, kg$ person would gain if all $^1H$ atoms are replaced by $^2H$ atoms is ....... $kg$