Assertion (A): a.m.u is defined as the quantity of mass equal to $\frac{1}{12}$ th of mass of C–12 atom.
Reason (R): The molecular weight of ${Na}_{2} {CO}_{3}$ is 106.

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

A is correct and R is incorrect.

Both A and R are correct and R is correct explanation of A.

A is incorrect and R is correct.

Both A and R are correct but R is not correct explanation of A.

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Molecular weight of ${Na}_{2} {CO}_{3}$ is 106 and a.m.u is equal to $\frac{1}{12}$ th of the mass of C-12 atom. Here, both Assertion and reason are true but there is no relation between them.

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Get Expert Academic Guidance – Connect with a Counselor Today!