CBSE Class 10 Science 2020 · Paper 31/1/2 · Question 5(b)
An element ‘X’ reacts with to give a compound with a high melting point. This compound is also soluble in water. The element ‘X’ is likely to be :
- (a)iron
- (b)calcium
- (c)carbon
- (d)silicon
Answer
(b) calcium
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