The electrophile in the nitration of benzene is
Options
(a) NO₂⁺ (b) NO₂ (c) NO⁺ (d) NO₂⁻
Correct Answer:
NO₂⁺
Explanation:
Nitronium ion (NO₂⁺) is an electrophile that actually attacks on the benzene […]
What is kinetic energy of 1 g of O₂ at 47⁰C
Options
(a) 1.24 ˣ 10² J (b) 2.24 ˣ 10² J (c) 1.24 ˣ 10³ J (d) 3.24 ˣ 10² J
Correct […]
Which responds to +ve iodoform test
Options
(a) butanol (b) butane-1-al (c) butanol-2 (d) 3-pentanone
Correct Answer:
butanol-2
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Glucose and mannose are
Options
(a) epimers (b) anomers (c) ketohexoses (d) disaccharides
Correct Answer:
epimers
Explanation:
Gluose and mannose are epimers because they both differ in configuration at C-2 and the Isomer […]
Which is correct about zero order reaction
Options
(a) Rate of reaction depends on decay constant (b) Rate of reaction is independent of concentration (c) Unit of rate constant is concentration⁻¹ (d) Unit […]
Coordination number of Zn in ZnS (zinc blende) is
Options
(a) 6 (b) 4 (c) 8 (d) 12
Correct Answer:
4
Explanation:
No explanation available. Be the first to write the explanation for […]
Percentage of recombination between A and B is 9%, A and C is 17%, B and C is 26%, then the arrangement of genes is
Options
(a) ABC (b) ACB (c) BCA (d) […]
Natural genetic engineer is
Options
(a) Pseudomonas putida (b) Agrobacterium tumefaciens (c) Escherichia coli (d) Bacillus sublilis
Correct Answer:
Agrobacterium tumefaciens
Explanation:
A. tumefaciens has the exceptional ability to transfer a particular DNA […]
Restriction enzyme EcoR I cleavage DNA at the sequence
Options
(a) AAGCTT (b) AAGTTC (c) TATAGC (d) GAATTC
Correct Answer:
GAATTC
Explanation:
No explanation available. Be the first to write the explanation for […]
Similipal is
Options
(a) Sanctuary (b) Biosphere Reserve (c) National Park only (d) Zoo
Correct Answer:
Biosphere Reserve
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
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