Question

Anuska is completed her science chapter where she wrote some statements. Which of the

following is a correct statement?

(a) An element cannot be split up into two or more simpler substances because it is made of

only one kind of atoms.

(b) There are 118 elements known at present, out of which 94 elements, occur in nature while

the remaining 24 elements have been prepared artificially.

(c) 11 elements are gases whereas only two elements mercury and bromine a liquid at room

temperature.

(d) All of the above
In the following Question number 9 & 10, the Assertion and Reason have been put forward. Read

the statements carefully and choose the correct alternative from the following:

(a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the

Assertion.

(b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the

Assertion.

(c) Assertion is true but the Reason is false.

(d) The statement of the Assertion is false but the Reason is true.
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Answer 1

Answer:

(a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the