Home
Class 10
CHEMISTRY
An element reacts with oxygen to give a ...

An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be
(a)
(b)
(c)
(d)

A

calcium

B

carbon

C

silicon

D

iron

Text Solution

Verified by Experts

Pure calcium oxide or lime, is an amorphous white solid, having a high melting point (2273 k)
When lime is added to water, a hissing sound is produced and a large amount of heat is generated.
`CaO+H_2O to Ca(OH)_2_(Slaked lime)+Heat`
Therefore, the correct answer is (a)
Promotional Banner

Topper's Solved these Questions

  • METALS AND NON-METALS

    VK GLOBAL PUBLICATION|Exercise VERY SHORT ANSWER QUESTIONS|26 Videos

  • METALS AND NON-METALS

    VK GLOBAL PUBLICATION|Exercise SHORT ANSWER QUESTION-I|21 Videos

  • METALS AND NON-METALS

    VK GLOBAL PUBLICATION|Exercise PROFICIENCY EXERCISE LONG ANSWER QUESTION|3 Videos

  • CHEMICAL REACTIONS AND EQUATIONS

    VK GLOBAL PUBLICATION|Exercise PROFICIENCY EXERCISE (LONG ANSWER QUESTIONS)|2 Videos

  • MODEL QUESTION PAPER - 4

    VK GLOBAL PUBLICATION|Exercise SECTION - B |2 Videos

Similar Questions

Explore conceptually related problems

An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be (a) calcium (b) carbon (c) silicon (d) iron

Amino acids have high melting points and are soluble in water.

Generally the ionic' compounds have high melting points. Give reason

Transition elements show high melting points. Why?