When 25g of Na₂SO₄ is dissolved in 10³ kg of solution,its concentration will be
When 25g of Na₂SO₄ is dissolved in 10³ kg of solution,its concentration will be Options (a) 2.5ppm (b) 25ppm (c)…
8 years ago
Questions
The basic component of the smog is
The basic component of the smog is Options (a) PAN (b) PBN (c) NO₂ (d) all of these Correct Answer:…
8 years ago
Ethyl iodide when heated with sodium in dry ether gives pure
Ethyl iodide when heated with sodium in dry ether gives pure Options (a) C₄H₁₀ (b) C₂H₆ (c) C₃H₈ (d) C₂H₅OH…
8 years ago
The correct order of decreasing acidic nature of H₂O,ROH,CH≡CH and NH₃ is
The correct order of decreasing acidic nature of H₂O,ROH,CH≡CH and NH₃ is Options (a) CH≡CH>H₂O>ROH>NH₃ (b) H₂O>ROH>CH≡CH>NH₃ (c) ROH>NH₃>CH≡CH>H₂O (d)…
8 years ago
The type of hybridisation of boron in diboron is
The type of hybridisation of boron in diboron is Options (a) sp³ hybridisation (b) sp² hybridisation (c) sp hybridisation (d)…
8 years ago
The oxidation state of Cr in K₂Cr₂O₇ is
The oxidation state of Cr in K₂Cr₂O₇ is Options (a) -5 (b) 6 (c) -6 (d) 5 Correct Answer: 6Explanation:No…
8 years ago
HSO₄⁻ + OH⁻ → SO₄²⁻ + H₂O. which is correct about conjugate acid – base pair
HSO₄⁻ + OH⁻ → SO₄²⁻ + H₂O. which is correct about conjugate acid - base pair Options (a) HSO₄⁻ is…
8 years ago
The bond dissociation energies of H₂, Cl₂ and HCl are 104, 58, and 103
The bond dissociation energies of H₂, Cl₂ and HCl are 104, 58, and 103 kcal mol⁻¹ respectively. The enthalphy of…
8 years ago
If 200 mL of gas at 27°C is cooled to 7°C at constant pressure, its final volume will be
If 200 mL of gas at 27°C is cooled to 7°C at constant pressure, its final volume will be Options…
8 years ago
Which of the following is a planar?
Which of the following is a planar? Options (a) XeF₂ (b) XeO₃F (c) XeO₂F₂ (d) XeF₄ Correct Answer: XeF₄Explanation:No explanation…
8 years ago