Question : A fuse wire is made of

Option 1: An alloy of tin and copper

Option 2: An alloy of tin and lead

Option 3: An alloy of tin and aluminium

Option 4: An alloy of Nickel and Chromium

Question : The metallic contituents of hard water are:

Option 1: Magnesium calcium and tin

Option 2: Iron ,tin and calcium

Option 3: Calcium ,magnesium and iron

Option 4: Magnesium ,tin and iron

Question : In two alloys, the ratio of Aluminium to Zinc is 5 : 6 and 3 : 5. If 242 kg of the first alloy and 144 kg of the second alloy are mixed, then the ratio of Aluminium and Zinc in the new alloy will be:

Option 1: 76 : 117

Option 2: 82 : 111

Option 3: 93 : 100

Option 4: 68 : 125

Question : Philosopher's wool is chemically

Option 1: Aluminium oxide

Option 2: Magnesium oxide

Option 3: Zinc oxide

Option 4: Calcium oxide

Question : Two alloys consist of copper and tin. The copper-to-tin ratio in the first alloy is 1 : 3, and in the second alloy, it is 2 : 5. What ratio should the two alloys be mixed in to create a new alloy with a tin-to-copper ratio of 8 : 3?

Option 1: 3 : 5

Option 2: 4 : 7

Option 3: 3 : 8

Option 4: 5 : 11