The variation of the boiling points of the hydrogen halides is in the order HF > HI > HBr > HCl. What explains the higher boiling point of hydrogen fluoride?
Options
(a) There […]
The vacant space in bcc lattice unit cell is
Options
(a) 48.00% (b) 23.00% (c) 32.00% (d) 26.00%
Correct Answer:
32.00%
Explanation:
No explanation available. Be the first to write the explanation for […]
The sum of coordination number and oxidation number of the metal M in the complex [M(en)₂(C₂O₄)]Cl (where en is ethylenediamine) is
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(a) 6 (b) 7 (c) 8 (d) 9
Correct Answer:
9
The stability of +1 oxidation state among Al, Ga, In, and TI increases in the sequence
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(a) Al< Ga < In < TI (b) TI < In < Ga < Al (c) […]
The rate constant of the reaction A → B is 0.6 ˣ 10⁻³ mol per second. If the concentration of A is 5 M, then concentration of B after 20 minutes is
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The oxidation of benzene by V₂O₅ in the presence of air produces
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(a) maleic anhydride (b) benzoic acid (c) benzaldehyde (d) benzoic anhydride
Correct Answer:
maleic anhydride
Explanation:
No explanation available. Be […]
The name of complex ion, [Fe(CN)₆]³⁻ is
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(a) hexacyanitoferrate (III) ion (b) tricyanoferrate (III) ion (c) hexacyanidoferrate (III) ion (d) hexacyanoiron (III) ion
Correct Answer:
hexacyanidoferrate (III) ion
Explanation:
No explanation available. […]
The heat of combustion of carbon to CO₂ is -393.5 kJ/mol. The heat released upon formation of 35.2 g of CO₂ from carbon and oxygen gas is
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(a) 315 kJ (b) -630 kJ […]
The Formation of the oxide ion, O²⁻ from oxygen atom requires first an exothermic and then an endothermic step as shown below: O(g) + e⁻ → O⁻(g) ; Δf H° = -141 kJ mol⁻¹ O⁻(g) […]
Strong reducing behaviour of H₃PO₂ is due to
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(a) high electron gain enthalpy of phosphorus (b) high oxidation state of phosphorus (c) presence of two –OH groups and one P–H bond (d) […]
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