Back to ENVIRONMENTAL CHEMISTRY

NEET UG CHEMISTRY MCQ: ENVIRONMENTAL CHEMISTRY

1 Medium

1 of 1

Application +4 | -1

Haemoglobin contains

0.34 \%

of iron by mass. The number of

\mathrm{Fe}

atoms in

3.3 \mathrm{~g}

of haemoglobin is

(Given : Atomic mass of

\mathrm{Fe}

is

56 \mathrm{u}, \mathrm{N}_{\mathrm{A}}=6.022 \times

\left.10^{23} \mathrm{~mol}^{-1}\right)

View answer and explanation

Correct option: C

1.21 \times 10^{20}

Option C (

1.21 \times 10^{20}

) is correct because it is the calculated number of Fe atoms in 3.3 g of hemoglobin based on the given percentage and Avogadro's number.

More Questions from ENVIRONMENTAL CHEMISTRY

Practice All Chapter MCQs →

Average ozone concentration in Jakarta, Indonesia have been reported to be

0.015 \mathrm{~mg} \mathrm{~m}^{-3}

and those in Tokyo, Japan are

20 \mathrm{~ppmV}

. What is the approximate ratio of these two values, when expressed in the same unit? Increasing skin cancer and high mutation rate are due to S-I: Aldehydes are one of the constituents of photochemical smog.
S-II: Aldehydes are produced by photochemical oxidation of hydrocarbons by ozone. Which of the following statements is false? Most suitable atmospheric reaction which is relating to that of disfiguring of Taj Mahal is: Formation of London smog takes place in