Question

the value of amu is which of the following is
A. `1.57xx10^(-24)` kg
B. `1.66xx10^(-24)` kg
C. `1.99xx10^(-23)` kg
D. `1.66xx10^(-27)` kg

Answer 1

Correct Answer - D
amu represents atomic mass unit. It is used in place of unified mass unit.
1 amu = 1 avogram =1 aston = 1 dalton
1 amu `=1/12 xx` mass =1 aston = 1 dalton
`=1/12xx1.9924xx10^(-23) g`
`=1.66 xx10^(-24) g=1.66xx10^(-27) kg`.