It is soft sulphate mineral. That is offered in plaster formation. The is supplied in blackboard chalk formation.It is offered as a fertilizer.It Talc have the right to not scrape gypsum because it is harder than talc.

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It has actually no soapy feel.

Talc is hydrous magnesium silicate mineral . It is usually green ,gray, white , brown or colourless.It is a translucent mineral . It has actually pearly luster.

It is soften known mineral. The chemical formula of talc is

.It covers magnesium, silicon, oxygen and hydrogen.It has too much softness and also greasy. It has actually soapy feel. Gypsum is harder than talc and also more difficult to scratch.

Hence, the choice B is true. B. Talc has soapy feel.

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