Carborundum is
- A$SiC$
- B$Al_{2}O_{3} \cdot H_{2}O$
- C$Al_{2}(SO_{4})_{3}$
- D$AlCl_{3}$
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Pyrosilicate ion is
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View SolutionAssertion $(A)$: The maximum covalency of $Si$ and $Ge$ is $6$ but that of carbon is $4$.
Reason $(R)$: Due to the presence of $d$-orbitals in $Si$ and $Ge$,both these elements can undergo $sp^3d^2$ hybridisation and covalency of $6$ is possible. Carbon has no $d$-orbitals in it and hence its covalency is $4$.
The correct answer is:
Reason $(R)$: Due to the presence of $d$-orbitals in $Si$ and $Ge$,both these elements can undergo $sp^3d^2$ hybridisation and covalency of $6$ is possible. Carbon has no $d$-orbitals in it and hence its covalency is $4$.
The correct answer is:
Which of the following is true for diamond?
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View SolutionWhich of the following acids is formed when $SiF_4$ reacts with water?
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View Solution$PbO_2$ reacts with concentrated $HNO_3$. The gas evolved is:
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