Calcium, Copper, Lead, Aluminium, Zinc, Chromium, Magnesium, Iron Choose the major metals from the list given above to make the following alloys : (i) Stainless steel. (ii) Brass.

Calcium, Copper, Lead, Aluminium, Zinc, Chromium, Magnesium and Iron. Choose the major metals from the list given above to make the following alloys : Stainless steel

Calcium, Copper, Lead, Aluminium, Zinc, Chromium, Magnesium and Iron. Choose the major metals from the list given above to make the following alloys : Brass

Match list I with list II and choose the correct answer from the codes given below :

Match list - I with list - II and choose the correct answer from the code given below Codes are

State the main constituent metal in each alloy i] Duralumin ii] Brass iii] Stainless steel.

Fill in the blanks choosing appropriate word/ words from those given in the brackets : (gravity separation, magnetic separation, absence, presence, CuFeS_2 , Cu_2S , froth flotation, aluminium, iron, smelting, pure, impure, mines, copper, silver, sulfide, zinc, chromium nickel, tin, blister copper, Cus, Fes, thermal, electrical, argentite or silver glance (Ag_2S) , cuprous oxide, cuprous sulfide.) Stainless steel is an alloy of............

Fill in the blanks from the choices given in brackets: An alloy used to make statues is ……………...(bronze, brass, fuse metal)

Name the chief forms of the occurrence of the following in the earth's crust : (i) aluminium (ii) calcium (ii) sodium (iv) lead