List of top Chemistry Questions on Alkenes

As compared with chlorocyclohexane, which of the following statements correctly apply to chlorobenzene?
The magnitude of negative charge is more on chlorine atom.
The C--Cl bond has partial double bond character.
C--Cl bond is less polar.
C--Cl bond is longer due to repulsion between delocalised electrons of the aromatic ring and lone pairs of electrons of chlorine.
The C--Cl bond is formed using $sp^2$ hybridised orbital of carbon.
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Arrange the following alkenes in the decreasing order of stability:

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

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An optically active alkene having molecular formula C$_8$H$_{16}$ gives acetone as one of the products on ozonolysis. The structure of the alkene is

What is the major product of the reaction of an alkene with bromine water?

The product obtained on ozonolysis of 3-Ethylpent-2-ene are

The chemical name of calgon is:

Ferrocene is:

An alkene X ($ C_4H_8 $) on reaction with HBr gave Y ($ C_4H_9Br $). Reaction of Y with benzene in the presence of anhydrous $ AlCl_3 $ gave Z which is resistant to oxidation with $ KMnO_4 + KOH $. What are X, Y, Z respectively?

An alkene X ($ C_4H_8 $) does not exhibit cis-trans isomerism. Reaction of X with $ Br_2 $ in the presence of UV light gave Y. What is Y?

Which of the following alkenes is most stable?

The alkane which is next to methane in the homologous series can be prepared from which of the following reactions?

What is ‘Y’ in the following set of reactions?

Consider the above reaction and identify the product B.

Ammoniacal silver nitrate forms a white precipitate easily with

An alkene X on ozonolysis gives a mixture of Propan-2-one and methanal. What is X?

Find out the major product from the following reaction

Choose the correct set of reagents for the following conversion trans $\left( Ph - CH = CH - CH _3\right) \rightarrow \operatorname{cis}\left( Ph - CH = CH - CH _3\right)$

Given below are two statements, one is labelled as Assertion $A$ and the other is labelled as Reason $R$
Assertion A: Carbon forms two important oxides - $CO$ and $CO _2 .CO$ is neutral whereas $CO _2$ is acidic in nature
Reason R : $CO _2$ can combine with water in a limited way to form carbonic acid, while $CO$ is sparingly soluble in water
In the light of the above statements, choose the most appropriate answer from the options given below

Match List I with List II

List-I		List-II
(A)	Cyanocobalamine	(I)	Hydrogenation of Alkenes
(B)	Wilkinson catalyst	(II)	Antipernicious anemia factor
(C)	D-penicillamine	(III)	Refining of Ni
(D)	Mond's Process	(IV)	Treatment of toxic effects of copper

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The molality of a 10% (v/v) solution of di-bromine solution in $\text{CCl}_4$ (carbon tetrachloride) is $x$. $x = \, \_\_\_\_\ \times 10^{-2} \, \text{M}$. (Nearest integer)
Given:
Molar mass of $\text{Br}_2 = 160 \, \text{g mol}^{-1}$
Atomic mass of $\text{C} = 12 \, \text{g mol}^{-1}$
Atomic mass of $\text{Cl} = 35.5 \, \text{g mol}^{-1}$
Density of dibromine = $3.2 \, \text{g cm}^{-3}$
Density of $\text{CCl}_4 = 1.6 \, \text{g cm}^{-3}$

Compound X on reaction with O₃ followed by $\frac{Zn}{H_2O}$ gives formaldehyde and 2-methyl propanal as products. The compound X is:

Given below are two statements.
Statement I: The presence of weaker π-bonds make alkenes less stable than alkanes.
Statement II: The strength of the double bond is greater than that of carbon-carbon single bond.
In the light of the above statements, choose the correct answer from the options given below.

The major product (P) of the given reaction is (where, Me is –CH₃)

Number of grams of bromine that will completely react with 5.0 g of pent-1-ene is ______ × 10^–2g. (Atomic mass of Br = 80 g/mol) [Nearest integer]