The most common type of reaction in aromatic compounds is
Options
(a) elimination reaction (b) addition reaction (c) electrophilic substitution reaction (d) rearrangement reaction
Correct Answer:
electrophilic substitution reaction
Explanation:
Aromatic hydrocarbons show […]
Who coined the term ecosystem?
Options
(a) Ernst Haeckel (b) Charles Elton (c) E. P. Odum (d) A. G. Tansley
Correct Answer:
A. G. Tansley
Explanation:
No explanation available. Be the first to […]
Cyclopentadienyl anion is
Options
(a) aromatic (b) non-aromatic (c) non-planar (d) aliphatic
Correct Answer:
aromatic
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Which of the following is a strong acid
Options
(a) HF (b) HCl (c) HBr (d) HI
Correct Answer:
HI
Explanation:
No explanation available. Be the first to write the explanation for this […]
The unit of second order reaction rate constant is
Options
(a) L⁻¹ mol s⁻¹ (b) L² mol⁻² s⁻¹ (c) L mol⁻¹ s⁻¹ (d) s⁻¹
Correct Answer:
L mol⁻¹ s⁻¹
Explanation:
For a second […]
The standard emf for the cell reaction, 2Cu⁺(aq) → Cu(s) + Cu²⁺(aq) is +0.36 V at 298 K. The equilibrium constant of the reaction is
Options
(a) 5 ˣ 10⁶ (b) 1.4 ˣ […]
The pH of gastric juice is
Options
(a) 2.0 – 3.0 (b) 2.6 – 6.8 (c) 3.7 – 8.5 (d) 4.7 – 9.0
Correct Answer:
2.0 – 3.0
Explanation:
No explanation available. Be […]
Which of the following components of blood does not enter into the nephron?
Options
(a) water (b) plasma protein (c) glucose (d) urea
Correct Answer:
plasma protein
Explanation:
No explanation available. Be the […]
The triplet UUU codes for
Options
(a) leucine (b) methionine (c) phenylalanine (d) glycine
Correct Answer:
phenylalanine
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
The concept on the origin of species by means of Natural Selection was first published in
Options
(a) 1859 (b) 1858 (c) 1839 (d) 1836
Correct Answer:
1859
Explanation:
Charles Darwin(1809-1882) was an […]
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