35% + _______% = 100%

64% + 20% +________ % = 100%

70% = ______%- 30%

45% = 100% -________%.

Fill in the blanks: Probability of _________ events is 100%

Fill in the blanks- __________ is an alloy made up of 95% of aluminium, 1% of magnesium, 4% of copper.

Fill in the blanks- ___________ is an alloy made up of 88% of Cu, 10% of Sn and 2% of Zn.

What happens when 50% of copper, 35% of zinc and 15% of nickel combine together?

Fill in the blanks- __________ alloy is made up of 95% of copper, 4% of tin, 1% of phosphorus.

Choose the correct option out of the following- Which alloy is made up of 95% Cu, 4% Sn, 1% P?

The chief ore of Zn is the sulphide ZnS. The ore is concentrated by froth floatation process and then heated in air to convert ZnS to ZnO . 2ZnS+3O_3 80% rarr 2ZnO+2SO. ZnO+H_2SO_4 100% rarr Zn SO_4+H_2O and 2ZnSO_4+2H_2O 80% rarr 2Zn+2Hn+2H_2SO_4+O_2 . The number of moles of ZnS required for producing 2 moles of Zn will be :