Question

Assertion
Diamond and graphite are allotropes of carbon
Reason
Some elements can have several different structural forms while in the same physical state. These differing forms are called allotropes.
(a) Both a and r are true and r is the correct explanation of a
(b) both a and r are true but r is not the correct explanation of a
(c) a is true but r is false
(d) a is false but r is true

Answer 1

Answer:

option A  

both a and r are true and r is the correct explanation of a

Answer 2

Both assertion and reason are true and the reason is the correct explanation of assertion.

• The assertion statement is 'Diamond and graphite are allotropes of carbon.' which is correct Diamond and Graphite are different forms of carbon which are called the allotropes of the carbon.
• The reason statement is 'Some elements can have several different structural forms while in the same physical state. These differing forms are called allotropes.' which is also correct. The basic atom in Diamond and Graphite is carbon. They differ only in the arrangement of the carbon atoms.
• The assertion and reason both statements are correct and the reason is the correct explanation of the assertion statement as it very well explains the assertion statement.