Hydrocarbons

n-Butane on monochlorination under photochemical condition gives an optically active compound " P ". " P " on further chlorination gives dichloro compounds.
The number of dichloro compounds obtained (ignore stereoisomers) is :

\(\text { The major product of which of the following reaction is not obtained by rearrangement reaction? }\)

Given below are two statements :
Statement I : Methane can be prepared by decarboxylation of sodium ethanoate, Kolbe's electrolysis of sodium acetate and reaction of $\mathrm{CH}_3 \mathrm{MgBr}$ with water.
Statement II : Methane cannot be...

An alkane $(Y)$ requires 8 moles of oxygen for complete combustion and on chlorination with $\mathrm{Cl}_2 / \mathrm{h} \nu,(\mathrm{Y})$ gives only one monochlorinated product $(\mathrm{Z})$. The total number of primary carbon atoms in $(Y...

For the following Friedel Craft's alkylation reaction, which of the statements are correct?

A. Major product is n-propyl benzene.
B. iso-propyl carbocation intermediate is also generated.
C. Multiple substitution is inevitable.
D. Introduc...

Identify the correct IUPAC name of hydrocarbon $(x)$ containing three primary carbon atoms and with molar mass $72 \mathrm{~g} \mathrm{~mol}^{-1}$.

IUPAC name of the some alkenes are given below.
Find out the correct stability order.
A. 2-Methylbut-2-ene
B. cis-But-2-ene
C. 2,3-Dimethylbut-2-ene
D. Prop-1-ene
Choose the correct answer from the options given below :

\(\text { An alkene }(\mathrm{X}) \text { on ozonolysis followed by reduction gives following products. }\)

\(\text { The alkene }(\mathrm{X}) \text { is : }\)

One mole of an alkane (x) requires 8 mole oxygen for complete combustion. Sum of number of carbon and hydrogen atoms in the alkane (x) is ________.

Consider the isomers of hydrocarbon with molecular formula $C_5H_{10}$. These isomers do not decolourise $KMnO_4$ solution. These isomers are subjected to chlorination with chlorine in presence of light to give monochloro compounds. The tot...

The compound (X) on(i) on heating in the presence of anhydrous AlCl3 and HCl gas gives 2,4-dimethyl pentane(ii) aromatization gives toluene and(iii) cyclisation gives methyl cyclohexaneThe correct name of compound (X) is:

\(\text {Arrange the following alkenes in decreasing order of stability. }\)

Choose the correct answer from the options given below:

But-2-yne and hydrogen (one mole each) are separately treated with (i) $\mathrm{Pd} / \mathrm{C}$ and (ii) $\mathrm{Na} /$ liq. $\mathrm{NH}_3$ to give the products X and Y respectively.

Identify the incorrect statements.
A. X and Y are st...

Consider the following reaction of benzene.

In compound $(Q)$, the percentage of oxygen is $\_\_\_\_$ %. (Nearest integer)

The cycloalkene $(\mathrm{X})$ on bromination consumes one mole of bromine per mole of $(\mathrm{X})$ and gives the product $(\mathrm{Y})$ in which $\mathrm{C}: \mathrm{Br}$ ratio is 3:1. The percentage of bromine in the product $(\mathrm{Y...

Given below are two statements :
Statement I : Benzene is nitrated to give nitrobenzene, which on further treatment \(\text { with } \mathrm{CH}_3 \mathrm{COCl} / \mathrm{AlCl}_3 \text { will give }\)
Statement II : $-\mathrm{NO}_2$ grou...

The dibromo compound $[\mathrm{P}]$ (molecular formula: $\mathrm{C}_9 \mathrm{H}_{10} \mathrm{Br}_2$ ) when heated with excess sodamide followed by treatment with dilute HCl gives [Q]. On warming [Q] with mercuric sulphate and dilute sulphu...

Consider the following reaction :

The product Y formed is :

\(\text { The final product }[\mathrm{B}] \text { is : }\)

80 mL of a hydrocarbon on mixing with 264 mL of oxygen in a closed U-tube undergoes complete combustion. The residual gases after cooling to 273 K occupy 224 mL . When the system is treated with KOH solution, the volume decreases to 64 mL ....

Given below are two statements:
Statement I : Ozonolysis followed by treatment with $\mathrm{Zn}, \mathrm{H}_2 \mathrm{O}$ of cis-2-butene gives ethanal.
Statement II : The product obtained by ozonolysis followed by treatment with $\mathrm{...

The reactions which cannot be applied to prepare an alkene by elimination, are

Choose the correct answer from the options given below:

Predict the major product of the following reaction sequence:-

\(\text { Which compound would give 3-methyl-6-oxoheptanal upon ozonolysis? }\)

Match List - I with List - II.

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Given below are two statements :
Statement (I) : Neopentane forms only one monosubstituted derivative.
Statement (II) : Melting point of neopentane is higher than n-pentane.
In the light of the above statements, choose the most appropriate ...

The sum of sigma (σ) and pi (π) bonds in Hex-1,3-dien-5-yne is ________.

Isomeric hydrocarbons → negative Baeyer’s test(Molecular formula C9H12)The total number of isomers from above with four different non-aliphatic substitution sites is -

Total number of sigma (σ) _______ and pi(π) ______ bonds respectively present in hex-1-en-4-yne are:

Identify product [A], [B] and [C] in the following reaction sequence.
$\mathrm{CH}_3-\mathrm{C} \equiv \mathrm{CH} \xrightarrow[\mathrm{H}_2]{\mathrm{Pd} / \mathrm{C}}[\mathrm{A}] \xrightarrow[\text { (ii) } \mathrm{Zn}, \mathrm{H}_2 \mathr...

The product B formed in the following reaction sequence is:

The product $(\mathrm{A})$ formed in the following reaction sequence is

Match the List - I with List - II

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Match List - I with List - II

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Given below are two statements :
Statement I : One mole of propyne reacts with excess of sodium to liberate half a mole of $\mathrm{H}_2$ gas.
Statement II : Four g of propyne reacts with $\mathrm{NaNH}_2$ to liberate $\mathrm{NH}_3$ gas wh...

When sec-butylcyclohexane reacts with bromine in the presence of sunlight, the major product is :

The alkane from below having two secondary hydrogens is :

The compound with molecular formula $\mathrm{C}_6 \mathrm{H}_6$, which gives only one monobromo derivative and takes up four moles of hydrogen per mole for complete hydrogenation has _________ $\pi$ electrons.

Identify the product A and product B in the following set of reactions.

The incorrect statement regarding ethyne is

Major product B of the following reaction has ________ \(\pi\)-bond.

In the given compound, the number of 2\(^\circ\) carbon atom/s is ________.

Given below are two statements :
Statement (I) : \(\mathrm{S}_{\mathrm{N}} 2\) reactions are 'stereospecific', indicating that they result in the formation of only one stereo-isomer as the product.
Statement (II) : $$\mathrm{S}_{\mathrm{N}}...

The major products from the following reaction sequence are product A and product B.

The total sum of \(\pi\) electrons in product A and product B are __________ (nearest integer)

The major product of the following reaction is P.
\(\mathrm{CH}_3 \mathrm{C}\equiv\mathrm{C}-\mathrm{CH}_3\) $$\xrightarrow[\substack{\text { (ii) dil. } \mathrm{KMnO}_4 \\ 273 \mathrm{~K}}]{\text { (i) } \mathrm{Na} \text { /liq. } \mathrm...

Consider the above chemical reaction. Product "A" is :

Given below are two statements :
Statement I :
Nitration of benzene involves the following step -

Statement II : Use of Lewis base promotes the electrophilic substitution of benzene.
In the light of the above statements, choose the most ap...

In the above chemical reaction sequence "\(\mathrm{A}\)" and "\(\mathrm{B}\)" respectively are

Major product of the following reaction is -

In the given reactions, identify the reagent A and reagent B.