From the following, choose the one which are not secondary haloalkanes :
(A) 2-Bromopentane
(B) 1-Bromo-3-methylbutane
(C) 3-Bromopentane
(D) 2-Bromo-2- methylbutane
(E) 2-Bromo-3-methylbutane
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Answer the question on the basis of passage given below :
Aldehydes and ketones represent two essential classes of organic compounds
which are extensively used in the synthesis of a wide variety of other organic molecules.
Due to the inherent polarity of the central carbonyl group, these substances readily undergo nucleophilic addition reactions.
Broadly speaking, these addition reactions can be categorized into two types:
one in which simple addition of the nucleophilic reagent occurs across the \(> C = O\) bond, and the second type where the initial addition is subsequently followed by the elimination of a water molecule.
A variety of ammonia derivatives, including hydroxylamine, hydrazine, phenylhydrazine,
2, 4-dinitroplhenylhdrasine, and semicarbaside, all belong to this second category of reactions.
These specific derivatives are fundamentally used for the identification and definitive characterization of aldehydes and ketones. Significantly, both types of nucleophilic addition reactions are strongly influenced by both steric and electronic factors.
As a general rule, aliphatic aldehydes exhibit higher reactivity compared to aromatic aldehydes.
The aliphatic aldehydes demonstrate the ability to reduce both Fehling's solution and Tollen's reagent, whereas aromatic aldehydes are limited to reducing only Tollen's reagent.
In a similar manner to aldehydes, aromatic ketones are observed to be less reactive than aliphatic ketones towards all nucleophilic addition reactions.
In a separate context, phenols and carborylic acids both exhibit acidic properties in nature.
Both classes of compounds readily dissolve in NaOH solution and cause blue litmus to turn red.
However, carboxylic acids stand out as much stronger acids than phenols and thus can decompose sodium bicarbonate \(\left( NaHCO _3\right)\) with the distinct evolution of \(CO _2\) gas, a reaction which phenols do not undergo.
It is important to note that both electron- donating and electron- withdrawing substituents significantly influence the acid strength of both aliphatic as well as aromatic carborylic acids.
Furthermore, unlike all other common aliphatic acids, formic acid uniquely possesses reducing properties and simultaneously does not display the typical reactions characteristic of the alkyl group.
Which of the following compound most readily undergoes nucleophilic addition reaction?

Which of the following will produce turbidity most readily when treated with conc. HCl in presence of anhydrous \(ZnCl _2\) (Lucas reagent)?

Which of the following is an ore of copper

Which of the following reagent(s) is required for the conversion of Benzene to methyl benzoate?
(A) \(Br 2 / FeBr 3\)
(B) Mg, dry Ether
(C) \(CO 2, H3O+\)
(D) Methanol, Conc. H2SO4
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Which of the following processes is responsible for the formation of a Delta when river water meets the sea water?

Which of the following statements is correct for ortho and para nitrophenols?
(A) They can be separated by steam distillation
(B) o-Nitrophenol undergoes intramolecular hydrogen bonding
(C) p-Nitrophenol undergoes intermolecular hydrogen bonding
(D) p-Nitrophenol is less volatile
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Linear inequalities corresponding to the shaded feasible region \(O A B C O\) in the given figure are

Who popularised the term 'Biodiversity'?

Arrange the evolutionary human species in their occurrence from recent to the oldest order.
(A) Australopithecus
(B) Homo erectus
(C) Homo sapiens
(D) Neanderthal man
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Which of the following statements is not true with respect to electromagnetic waves ?

The standard electrode potential for Daniell cell is 1.1 V , calculate the standard Gibb's energy for the reaction:
\(Z n(s)+C u^{2+}(a q) \rightarrow Z n^{2+}(a q)+C u(s)\)
It is found to be

For the given five values 3.6, 4.3, 4.3, 3.4, 4.4, the three years moving averages are: