Q. Allochromatic minerals may show more than two colours.

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Q. Pseudochromatism occurs due to ___________

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Q. The phenomenon due to which a mineral shows rainbow colours is?

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Q. Play of colours is not desirable.

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Q. Colour changing phenomenon which involves oxidation is ____________

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Q. Lustre doesn’t depend on?

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Q. Lustre is dependent on colour.

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Q. High density, high refractive index is characteristic of ___________

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Q. Type of shine or lustre associated with lustre of diamond is ___________

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Q. Streak is an important diagnostic property of ___________

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Q. Which mineral gives streak?

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Q. The mineral which is almost black but gives brown streak is?

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Q. Hardness of a mineral depends upon ___________

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Q. The scale of hardness is?

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Q. Minerals of equal hardness do no scratch each other.

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Q. Hardness of human nail varies between ___________

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Q. Hardness is which kind of property?

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Q. How does hardness vary with decomposition?

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Q. Hardness is a relative property.

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Q. The tendency of a crystallized mineral to break along certain directions yielding more or less smooth, plane surfaces is ___________

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