MCQ
Which statement is wrong ?
- ABeryl is an example of cyclic silicate.
- B$Mg_2SiO_4$ is orthosilicate.
- CBasic structural unit in silicates is the $SiO_4$ tetrahedron.
- ✓Feldspars are not aluminosilicates.
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$\left[\right.$ Given $: \mathrm{h}=6.63 \times 10^{-34} \,\mathrm{Js}$ and $\left.\mathrm{c}=3.0 \times 10^{8} \,\mathrm{~ms}^{-1}\right]$
What is $A$

For a certain quantity of reactants, if the volume of the reaction vessel is reduced by a factor of $3,$ the rate of the reaction increases by a factor of $.....$. (Round off to the Nearest Integer).
Arrange the following in increasing order of their covalent character.
_x000D_ _x000D_$CaF _{2}$,$CaCl _{2}$,$CaBr _{2}$,$CaI _{2}$
_x000D_ _x000D_Choose the correct answer from the options given below.