Oxidation of acetaldehyde with selenium dioxide produces
Oxidation of acetaldehyde with selenium dioxide produces Options (a) glyoxal (b) oxalic acid (c) ethanoic acid (d) methanoic acid Correct…
7 years ago
Chemistry
Give cyclohexanol(I), acetic acid (II), 2,4,6-trinitrophenol(III),and phenol(IV)
Give cyclohexanol(I), acetic acid (II), 2,4,6-trinitrophenol(III), and phenol(IV).In these the order of decreasing acidic character will be Options (a) III…
7 years ago
Treatment of a mixture of CH₃Cl and C₂H₅Cl with sodium in dry ether can generat
Treatment of a mixture of CH₃Cl and C₂H₅Cl with sodium in dry ether can generate Options (a) only ethane (b)…
7 years ago
Shape of Fe(CO)₅ is
Shape of Fe(CO)₅ is Options (a) Octahedral (b) square planar (c) trigonal bipyramidal (d) square pyramidal Correct Answer: trigonal bipyramidalExplanation:No…
7 years ago
How many edta molecules can surround calcium
How many edta molecules can surround calcium Options (a) 2 (b) 1 (c) 3 (d) 8 Correct Answer: 1Explanation:No explanation…
7 years ago
The electronic configuration of transition elements is exhibited by
The electronic configuration of transition elements is exhibited by Options (a) ns¹ (b) ns²np⁵ (c) ns² (n - 1) d¹⁻¹⁰…
7 years ago
Sodium thiosulphate is added in photography to
Sodium thiosulphate is added in photography to Options (a) improve colour of photograph (b) remove unreacted AgBr (c) form latent…
7 years ago
The oxidation number of phosphorus and basicity of acid in pyrophosphoric acid
The oxidation number of phosphorus and basicity of acid in pyrophosphoric acid respectively are Options (a) four and three (b)…
7 years ago
The solubility of I₂ increases in water in the presence of
The solubility of I₂ increases in water in the presence of Options (a) KMnO₄ (b) KI (c) C₂S (d) H₂SO₄…
7 years ago
The catalyst used in the manufacture of H₂SO₄ by contact process is
The catalyst used in the manufacture of H₂SO₄ by contact process is Options (a) V₂O₃ (b) V₂O₅ (c) FeO (d)…
7 years ago