What is the chemical formula for Plaster of Paris?
- A$CaSO_4$
- B$CaSO_4 \cdot 7H_2O$
- C$CaSO_4 \cdot \frac{1}{2}H_2O$
- D$CaSO_4 \cdot 2H_2O$
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Similar Questions
How would you explain the following observations?
$(i)$ $BeO$ is almost insoluble but $BeSO_4$ is soluble in water,
$(ii)$ $BaO$ is soluble but $BaSO_4$ is insoluble in water,
$(iii)$ $LiI$ is more soluble than $KI$ in ethanol.
$(i)$ $BeO$ is almost insoluble but $BeSO_4$ is soluble in water,
$(ii)$ $BaO$ is soluble but $BaSO_4$ is insoluble in water,
$(iii)$ $LiI$ is more soluble than $KI$ in ethanol.
Medium
View Solution$Ba$,$Ca$,and $Sr$ form halide hydrates. Their formulas are $BaCl_2 \cdot x H_2 O$,$CaCl_2 \cdot y H_2 O$,and $SrCl_2 \cdot z H_2 O$. The values of $x$,$y$,and $z$ respectively are:
Give the uses of cement.
Easy
View SolutionMatch the compounds given in Column-$I$ with their uses mentioned in Column-$II$:
Column-$I$ Column-$II$ $A$. $CaCO_3$ $1$. Dentistry,ornamental work $B$. $Ca(OH)_2$ $2$. Manufacture of sodium carbonate from caustic soda $C$. $CaO$ $3$. Manufacture of high quality paper $D$. $CaSO_4$ $4$. Used in white washing
| Column-$I$ | Column-$II$ |
|---|---|
| $A$. $CaCO_3$ | $1$. Dentistry,ornamental work |
| $B$. $Ca(OH)_2$ | $2$. Manufacture of sodium carbonate from caustic soda |
| $C$. $CaO$ | $3$. Manufacture of high quality paper |
| $D$. $CaSO_4$ | $4$. Used in white washing |
Medium
View SolutionWhy are the elements of group-$2$ known as alkaline earth metals?
Easy
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