'X' metal is soft and can be easily cut with a knife. It catches fire when exposed to air and water and is also used in street lights. What is 'X'?

'X' metal is soft and can be easily cut with a knife. It catches fire

1.	'X' metal is soft and can be easily cut with a knife. It catches fire when exposed to air and water and is also used in street lights. What is 'X'?
A.	Sodium
B.	Mercury
C.	Calcium
D.	Lithium
Answer» B. Mercury

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'X' metal is soft and can be easily cut with a knife. It catches fire when exposed to air and water and is also used in street lights. What is 'X'?

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