Q.No.1

Anhydrous copper sulphate (CuSO4 ) is

Q.No.2

CuSo4 solution reacts with KCN to give

Q.No.3

Pig Iron is also called

Q.No.4

Which of the following contains least percentage of iron

Q.No.5

Which of the following metal can be prepared simply by heating its ore in presence of air

Q.No.6

Very dilute solution of Zinc sulphate is used as

Q.No.7

Railway wagon axles made by heating rods of iron embedded in charcoal powder . This process is known as

Q.No.8

Which of the following statements is true?

Q.No.9

Generally metals occurs in the native state in the nature because

Q.No.10

Oil used in forth floation process is


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