JEE Chemistry - MCQ Practice Questions

In the nitration of benzene with HNO₃/H₂SO₄, the rate-determining step involves attack by:

The ionization energy of nitrogen is higher than oxygen because:

Which compound shows the highest ionic character?

The solubility of alkaline earth metal hydroxides increases down the group with the exception of:

The correct order of lattice energies is:

In the reaction 2KMnO₄ + 16HCl → 2KCl + 2MnCl₂ + 5Cl₂ + 8H₂O, the reducing agent is:

The thermal stability of Group 16 hydrides decreases in the order:

Which of the following transition metals can form stable complexes with CO?

The correct order of reducing power of Group 17 hydrides is:

In the extraction of copper from chalcopyrite (CuFeS₂), the role of silica (SiO₂) is:

Which of the following statements about borax (Na₂B₄O₅(OH)₄·8H₂O) is correct?

Which statement about diagonal relationship in periodic table is correct?

The most stable oxidation state of chromium is:

In the reaction of P₄ with excess oxygen, the product is:

The color of K₂Cr₂O₇ solution is due to:

Which of the following metals can displace hydrogen from dilute acids?

The aqueous solution of which salt would be basic?

Which complex ion shows maximum paramagnetism?

The lattice energy of NaCl is higher than that of NaI because:

Which of the following elements forms the most stable +6 oxidation state compound?