0.33%  of iron (by weight) is present in hemoglobin (Molecular wt = 67200).
The number of iron atom(s) in one molecule will be:

1.  1
2.  2
3.  3
4.  4

Subtopic:  Equation Based Problem |
71%
From NCERT
AIPMT - 1998
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The volume of CO2 obtained by the complete decomposition of 9.85 grams of BaCO3 is:

1. 2.24 lit.

2. 1.12 lit.

3. 0.84 lit.

4. 0.56 lit

Subtopic:  Equation Based Problem |
69%
From NCERT
AIPMT - 2000
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The percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (at. wt = 78.4) then the minimum molecular weight of peroxidase anhydrous enzymes is:

1. $1.568$ $×$ ${10}^{4}$

2. $1.568$ $×$ ${10}^{3}$

3. 15.68

4. $2.136$ $×$ ${10}^{4}$

Subtopic:  Equation Based Problem |
69%
From NCERT
AIPMT - 2001
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The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270 kg of aluminum metal from bauxite by the Hall process is:

1. 90 kg

2. 540 kg

3. 180 kg

4. 270 kg

(Atomic mass : Al = 27)

Subtopic:  Equation Based Problem |
From NCERT
AIPMT - 2005
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