Graphite and Cinnabar are examples of $.......$ and $.......$ crystal systems,respectively.
- AHexagonal and Trigonal
- BTrigonal and Hexagonal
- CHexagonal and Cubic
- DOrthorhombic and Hexagonal
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Similar Questions
Given below are two statements. One is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: Sharp glass edge becomes smooth on heating it up to its melting point.
Reason $R$: The viscosity of glass decreases on melting.
Choose the most appropriate answer from the options given below.
Assertion $A$: Sharp glass edge becomes smooth on heating it up to its melting point.
Reason $R$: The viscosity of glass decreases on melting.
Choose the most appropriate answer from the options given below.
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