Related Questions

Given that, 24 carat gold is pure gold, 18 carat gold is 3/4th of pure gold and 20 carat gold is 5/6th of pure gold, the ratio of the pure gold in 18 carat gold to the pure gold in 20 carat gold is -
A 5 : 8
B 10 : 9
C 8 : 5
D 9 : 10
In a rare coin collection, all coins are either pure gold or pure silver , and there is initially one gold coin for every three silver coins . With the addition of 10 more gold coins to the collection, the ratio of gold coins to silver coins is 1 to 2. Based on this information , how many total coins are there now in this collection (after the acquisition)?
A 40
B 50
C 70
D 90
Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as
A Quick setting cement
B Rapid hardening cement
C White cement
D Low heat Portland cement
Iron is a useful metal. Here iron is
A an adjective
B a noun
C an adverb
D a verb
How many iron rods, each of length 7 m and diameter 2 cm can be made out of 0.88 m3 of iron?
A 400
B 200
C 300
D 100
If you need 98 ounces of iron and 2 ounces of carbon to make a sheet of steel. How much iron you need in ounces to make 12 sheet steel?
A 98
B 50
C 49
D 198
Iron is a useful metal. এখানে ‘Iron’ শব্দটি কোন প্রকারের Noun ?
A Proper Noun
B Material Noun
C Collective noun
D Common Noun
Iron is a useful metal. এখানে 'Iron' শব্দটি কোন প্রকারের noun?
A Proper Noun
B Collective Noun
C Common Noun
D Material Noun
Which of the following is added to iron to make iron hard and strong?
A Zinc
B Copper
C Carbon
D Sodium
Which of the following metals displaces Iron from Iron Chloride?
A Lead
B Zinc
C Tin
D Silver

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