Question : Which of the following metals has the least melting point?

Option 1: Gold

Option 2: Silver

Option 3: Mercury

Option 4: Copper

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

Question : Magnalium is an alloy of

Option 1: Aluminium and Mangnesium

Option 2: magnesium and Tin

Option 3: Aluminium and Zinc

Option 4: Manganese and Magnesium

Question : Zinc and copper are in the ratio 5 : 3 in 400 gm of an alloy. How much copper (in grams) should be added to make the ratio 5 : 4?

Option 1: 50

Option 2: 66

Option 3: 72

Option 4: 200

Question : Coins made of metal first appeared in which of the following?

Option 1: Harappan Civilisation

Option 2: Later Vedic Age

Option 3: Age of the Buddha

Option 4: Age of the Mauryas