Cohesive force is experienced between
Options
(a) Magnetic substances (b) Dissimilar molecules (c) Molecules of same substance (d) None of these
Correct Answer:
Molecules of same substance
Explanation:
No explanation available. Be the first […]
If capillary experiment is performed in vaccum, then a liquid under the condition
Options
(a) will raise (b) will remain as such (c) will fall (d) None of these
Correct Answer:
will raise
Explanation: […]
A slab consists of two parallel layers of two different materials of same thickness and area having thermal conductivities K₁ and K₂. The equivalent conductivity of the combination of
Options
(a) K₁ + K₂ […]
The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?
Options
(a) length = 100 cm, diameter = 1 mm […]
Acetylene, on reacting with formaldehyde under high pressure, gives
Options
(a) propanol (b) propyl alcohol (c) allyl aldehyde (d) butyndiol
Correct Answer:
butyndiol
Explanation:
HC ≡ CH + HCHO (Acetylene) → HC ≡ […]
The number of π-bond present in propyne is
Options
(a) 4 (b) 1 (c) 3 (d) 2
Correct Answer:
2
Explanation:
No explanation available. Be the first to write the explanation for this […]
Which of the following gives methane on hydrolysis
Options
(a) CaC₂ (b) Al₄C₃ (c) Al₂O₃ (d) Fe₃O₄
Correct Answer:
Al₄C₃
Explanation:
Al₄C₃ + 12H₂O → 4Al(OH)₃ + 3CH₄↑
The reaction CH₃ – Br + 2Na + Br – CH₃ → CH₃ – CH₃ is called
Options
(a) Wurtz reaction (b) Perkin’s reaction (c) Aldol condensation (d) Levit reaction
Correct Answer:
Wurtz […]
Which of the following group activates the benzene ring most towards electrophilic substitution
Options
(a) –CHO (b) –NR₂ (c) –NHCOCH₃ (d) –NO₂
Correct Answer:
–NR₂
Explanation:
No explanation available. Be the first to […]
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 […]
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