Oxidation of acetaldehyde with selenium dioxide produces
Options
(a) glyoxal (b) oxalic acid (c) ethanoic acid (d) methanoic acid
Correct Answer:
glyoxal
Explanation:
No explanation available. Be the first to write the explanation […]
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 > II > IV > I (b) II > III > I > […]
Treatment of a mixture of CH₃Cl and C₂H₅Cl with sodium in dry ether can generate
Options
(a) only ethane (b) ethane and butane (c) propane and butane (d) ethane, propane and butane
Correct […]
Shape of Fe(CO)₅ is
Options
(a) Octahedral (b) square planar (c) trigonal bipyramidal (d) square pyramidal
Correct Answer:
trigonal bipyramidal
Explanation:
No explanation available. Be the first to write the explanation for this […]
How many edta molecules can surround calcium
Options
(a) 2 (b) 1 (c) 3 (d) 8
Correct Answer:
1
Explanation:
No explanation available. Be the first to write the explanation for this question […]
The electronic configuration of transition elements is exhibited by
Options
(a) ns¹ (b) ns²np⁵ (c) ns² (n – 1) d¹⁻¹⁰ (d) ns² (n – 1)d¹⁰
Correct Answer:
ns² (n – 1) d¹⁻¹⁰
Explanation: […]
Sodium thiosulphate is added in photography to
Options
(a) improve colour of photograph (b) remove unreacted AgBr (c) form latent image (d) to form a better picture
Correct Answer:
remove unreacted AgBr
The oxidation number of phosphorus and basicity of acid in pyrophosphoric acid respectively are
Options
(a) four and three (b) one and four (c) five and four (d) three and one
Correct Answer: […]
The solubility of I₂ increases in water in the presence of
Options
(a) KMnO₄ (b) KI (c) C₂S (d) H₂SO₄
Correct Answer:
KI
Explanation:
No explanation available. Be the first to write the […]
The catalyst used in the manufacture of H₂SO₄ by contact process is
Options
(a) V₂O₃ (b) V₂O₅ (c) FeO (d) Cu
Correct Answer:
FeO
Explanation:
No explanation available. Be the first to write […]
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