Hydrocarbons · Chemistry · AP EAPCET

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MCQ (Single Correct Answer)

1

Consider the sets I, II and III. Identify the set(s) which is (are) correctly matched.

I. Staggered ethane > eclipsed ethane ..........torsional strain.

II. 2, 2-dimethylbutane > 2-methylpentane ......... boiling point

III. cis-but-2-ene > trans-but-2-ene ......... dipole moment

AP EAPCET 2025 - 27th May Morning Shift
2

The empirical formula weight of ' $Z$ ' in the given reaction sequence is

$$ n \text {-propyl bromide } \xrightarrow[\text { Dry ether }]{\mathrm{Na}} X \xrightarrow[\substack{773 \mathrm{~K} \\ 20 \mathrm{~atm}}]{\mathrm{v}_2 \mathrm{O}_5} Y \xrightarrow[\text { UV } 500 \mathrm{~K}]{\mathrm{Cl}_2} Z $$

AP EAPCET 2025 - 23rd May Evening Shift
3

Which one of the following compounds does not give benzoic acid when treated with alkaline $\mathrm{KMnO}_4$ ?

AP EAPCET 2025 - 23rd May Morning Shift
4

Consider the following

Statement I Kolbe's electrolysis of sodium propionate gives $n$-hexane as product.

Statement II In Kolbe's process $\mathrm{CO}_2$ is liberated at anode and $\mathrm{H}_2$ is liberated at cathode.

Correct answer is

AP EAPCET 2025 - 22nd May Morning Shift
5

The catalyst used for the isomerisation of $n$-alkanes to branched chain alkanes is

AP EAPCET 2025 - 21st May Evening Shift
6

What are $X$ and $Y$ respectively, in the following set of reactions?

AP EAPCET 2025 - 21st May Evening Shift Chemistry - Hydrocarbons Question 5 English
AP EAPCET 2025 - 21st May Evening Shift
7

$$ \begin{aligned} &\text { Consider the following reaction sequence }\\ &\text { Vinyl benzene } \xrightarrow[\Delta]{\mathrm{KMnO}_4+\mathrm{KOH}} X \xrightarrow[\Delta]{\mathrm{NaOH}+\mathrm{CaO}} Y \end{aligned} $$

$' Y$ ' can also be formed from

AP EAPCET 2025 - 21st May Morning Shift
8

When ethyl bromide and $n$-propyl bromide are allowed to react with Na metal in dry ether, the number of different alkanes formed is

AP EAPCET 2025 - 21st May Morning Shift
9

$$ \text { Consider the following sequence of reactions } $$

AP EAPCET 2025 - 21st May Morning Shift Chemistry - Hydrocarbons Question 8 English

The incorrect statement about $z$ is

AP EAPCET 2025 - 21st May Morning Shift
10

$$ \text { What are } x \text { and } y \text { in the following reaction sequence? } $$

AP EAPCET 2025 - 21st May Morning Shift Chemistry - Hydrocarbons Question 7 English
AP EAPCET 2025 - 21st May Morning Shift
11
Which of the following sequence of reagents convert 3- hexene to propane?
AP EAPCET 2024 - 23th May Morning Shift
12

Toluene on reaction with the reagent $X$ gave $Y$, which dissolves in $\mathrm{NaHCO}_3$ and when reacted with $\mathrm{Br}_2 / \mathrm{Fe}$ gave $Z$. What are $X$ and $Z$ ?

AP EAPCET 2024 - 23th May Morning Shift
13

What are $X$ and $Y$ respectively in the following reaction sequence?

AP EAPCET 2024 - 22th May Evening Shift Chemistry - Hydrocarbons Question 13 English
AP EAPCET 2024 - 22th May Evening Shift
14
AP EAPCET 2024 - 22th May Evening Shift Chemistry - Hydrocarbons Question 14 English Conversion of $X$ to $Y$ is an example of
AP EAPCET 2024 - 22th May Evening Shift
15

In Kolbe's electrolysis of sodium propanoate, products formed at anode and cathode are respectively

AP EAPCET 2024 - 22th May Morning Shift
16

In Wurtz-Fittig reaction a compound $X$ reacts with alkyl halide. What is $X$ ?

AP EAPCET 2024 - 22th May Morning Shift
17
What are $X$ and $Y$ respectively in the following reaction sequence? AP EAPCET 2024 - 21th May Evening Shift Chemistry - Hydrocarbons Question 18 English
AP EAPCET 2024 - 21th May Evening Shift
18

Hydrolysis of an alkyl bromide $\left(\mathrm{C}_5 \mathrm{H}_{11} \mathrm{Br}\right)$ follows first order kinetics. Reaction of $X$ with Mg in dry ether followed by treatment of $\mathrm{D}_2 \mathrm{O}$ gave $Y$, What is $Y$ ?

AP EAPCET 2024 - 21th May Evening Shift
19
A mixture of ethyl iodide and $n$-propyl iodide is subjected to Wurtz reaction. The hydrocarbon which will not be formed is
AP EAPCET 2024 - 21th May Morning Shift
20
The product of which of the following reactions undergo hydrolysis by $\mathrm{S}_{\mathrm{N}} 1$ mechanism?

AP EAPCET 2024 - 20th May Evening Shift Chemistry - Hydrocarbons Question 20 English

AP EAPCET 2024 - 20th May Evening Shift
21
Styrene on reaction with reagent $X$ gave $Y$ which on hydrolysis followed by oxidation gave $Z . Z$ gives positive 2, 4-DNP test but does not give iodoform test. What are $X$ and $Z$ respectively ?
AP EAPCET 2024 - 20th May Evening Shift
22

An alkene $X\left(\mathrm{C}_4 \mathrm{H}_8\right)$ on reaction with HBr gave $Y\left(\mathrm{C}_4 \mathrm{H}_9 \mathrm{Br}\right)$. Reaction of $Y$ with benzene in the presence of anhydrous $\mathrm{AlCl}_3$ gave Z which is resistant to oxidation with $\mathrm{KMnO}_4-\mathrm{KOH}$. What are $X, Y, Z$ respectively?

AP EAPCET 2024 - 20th May Morning Shift
23

An alkene $X\left(\mathrm{C}_4 \mathrm{H}_8\right)$ does not exhibit cis-trans is memerisn Reaction of $X$ with $\mathrm{Br}_2$ in the presence of UV light gane $Y$. What is $Y$ ?

AP EAPCET 2024 - 20th May Morning Shift
24

What are $X$ and $Y$ respectively in the following reaction sequence?

$$ \text { Isopentane } \xrightarrow{\mathrm{KMnO}_4} X \xrightarrow{\text { Dehydration }} Y \text { Major } $$

AP EAPCET 2024 - 19th May Evening Shift
25

The product formed when a hydrocarbon $$X$$ of molecular formula $$\mathrm{C}_6 \mathrm{H}_{10}$$ is reacted with sodamide is subjected to ozonolysis, followed by hydrolysis with $$\mathrm{Zn} / \mathrm{H}_2 \mathrm{O}_2$$ and upon further oxidation gave two carboxylic acids, of which one is optically active. The hydrocarbon '$$X$$' is

AP EAPCET 2021 - 19th August Evening Shift
26

Identify the product of the following reaction.

AP EAPCET 2021 - 19th August Evening Shift Chemistry - Hydrocarbons Question 26 English

AP EAPCET 2021 - 19th August Evening Shift