Exams › JEE Main › Chemistry

Insulin and haemoglobin contain, respectively, the metals:

1. Zn, Hg
2. Zn, Fe
3. Co, Fe
4. Mg, Fe

Correct answer: Zn, Fe

Solution

Insulin is associated with zinc, while haemoglobin contains iron in its porphyrin (haem) ring.

Related JEE Main Chemistry questions

• A transition metal M gives a volatile chloride whose vapour density is 94.8. If this chloride contains 74.75% chlorine by mass, what is the formula of the metal chloride?
• What is the ratio of the magnetic moments of Fe(III) and Co(II)?
• Which of the following species contains the greatest number of unpaired electrons?
• Which of the following species contains an atom in the +6 oxidation state?
• Which of the following pairs contains compounds in which the metal in each case is present in its maximum possible oxidation state?
• Among the following metal oxides, which one exhibits antiferromagnetic behavior?

⚔️ Practice JEE Main Chemistry free + battle 1v1 →