Carbon found nature as a mixture of C-12 and C-13. The average atomic mass of carbon is 12.011u. What is the percentage abundance of carbon-12 in natu

(a) Ratio of neutrons to protons is 2.3: 1 which is not the stable ratio of 1:1 (b) Age of fossils can be estimated by C-14 decay. All living organisms have...

B) heterogeneous

A) \(\cfrac{mass \,of \,solute}{mass \,of \,solution}\) × 100 

Correct option is A) 12.01

D) P – S, Q – U, R – T

Correct option is (B) 16 Kgs Average weight of 15 packets \(=\frac{5\times24+10\times12}{15}\) \(=\frac{120+120}{15}\) \(=\frac{240}{15}\) = 16 kg

Correct Answer - B-10 = 20%, B-11 =80%

Correct Answer - c Average = `("Sum of the quantities")/("Number of the quantities")`

Correct Answer - B::D