Question

Assertion: If two or more isotopes of an element take part in the formation of a compound, then the same compound may have different ratios of the element.
Reason: In CO2 using C12 isotope, the ratio of C: O=3:8

In CO2 using C14 isotope, the ratio of C: O=7:16
A.
The assertion is True, Reason is True and Reason is correct explanation of Assertion

B.
The assertion is True, Reason is True but Reason is not correct explanation of Assertion

C.
The assertion is True, Reason is False

D.
The assertion is False, Reason is True

Answer 1

Answer:

A

SOLUTION

More elastic the material, higher the Young's Modulus.

Young's Modulus of Steel = 200 GPa

Young's Modulus of Rubber = 0.01-0.1 GPa

Young's Modulus of Steel is much higher than Rubber, So steel is more elastic than rubber.

Y = FL/Al

Y - Young's Modulus

L - Actual Length

A - Cross Section Area

l - Elongation

l = FL/AY

keeping F,L,A constant

l is inversely proportional to Y

Hence, Higher the Young's Modulus lesser the deformation (for Different Materials)