Which one of the following is not a condensation polymer
Options
(a) Melamine (b) Glyptal (c) Dacron (d) Neoprene
Correct Answer:
Neoprene
Explanation:
No explanation available. Be the first to write the explanation […]
Among the following compounds the one that is most reactive towards electrophilic nitration is
Options
(a) benzoic acid (b) nitrobenzene (c) toluene (d) benzene
Correct Answer:
toluene
Explanation:
No explanation available. Be the […]
Four successive members of the first series of the transition metals are listed below. For which one of them the standard potential (E⁰ M²⁺/M) value has a positive sign
Options
(a) Co (Z […]
Which one of the following does not correctly represent the correct order of the property indicated against it
Options
(a) Ti < V < Cr < Mn; increasing number of oxidation states (b) […]
Identify the alloy containing a non – metal as a constituent in it
Options
(a) Invar (b) Steel (c) Bell metal (d) Bronze
Correct Answer:
Steel
Explanation:
No explanation available. Be the first […]
In which of the following compounds, nitrogen exhibits highest oxidation state
Options
(a) N₂H₄ (b) NH₃ (c) N₃H (d) NH₂OH
Correct Answer:
N₃H
Explanation:
N₂H₄ ⇒ 2x + 4 (+1) = 0 ⇒ […]
Aluminium is extracted from alumina (Al₂O₃) by electrolysis of a molten mixture of
Options
(a) Al₂O₃ + HF + NaAlF₄ (b) Al₂O₃ + CaF₂ + NaAlF₄ (c) Al₂O₃ + Na₃AlF₆ + CaF₂ (d) […]
In a zero-order reaction. for every 10° C rise of temperature , the rate is doubled. If the temperature is increased from 10° C to 100° C , the rate of the reaction will become […]
A mixture consists of two radioactive materials A₁ and A₂ with half lives of 20s and 10s respectively. Initially the mixture has 40 g of A₁ and 160 g of A₂. The amount of the […]
If t₁ ̷ ₂ is the half-life of a substance, then t₃ ̷ ₄ is the time in which
Options
(a) substance decays 1/2 (b) substance decays (3/4)th (c) substance remains 1/2 (d) […]
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