a2zinterviews

6.	The basic raw materials required for the manufacture of cement are ___ and ___

Answer

Ans: limestone, clay

7.	Volatile metals like zinc and mercury are purified by ___ process.

Answer

Ans: distillation

8.	The organic acid present in vinegar is _____

Answer

Ans: acetic acid

9.	_____ is better than soap for washing clothes when hard water is used.

Answer

Ans: Detergents

10.	_____ is the catalyst used in the Haber’s process.

Answer

Ans: Iron