JEE Main 2023 Chemistry April 12 Shift 1 Question Paper PDF Download

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JEE Main 2023 Chemistry April 12 Shift 1 Question Paper is available here for download. Candidates can download official JEE Main 2023 Chemistry Question Paper PDF with Solution and Answer Key for April 12 Shift 1 using the link below. JEE Main Chemistry Question Paper is divided into two sections, Section A with 20 MCQs and Section B with 10 numerical type questions. Candidates are required to answer all questions from Section A and any 5 questions from section B.

JEE Main 2023 Chemistry Question Paper April 12 Shift 1 PDF

JEE Main 2023 12^th April Shift 1 Chemistry Question Paper with Solution PDF	Download	Check Solution

Question 1:

The compound shown below undergoes the following reactions:

Correct Answer: (4)

View Solution

Question 2:

Four gases A, B, C, and D have critical temperatures 5.3, 33.2, 126.0, and 154.3 K respectively.

For their adsorption on a fixed amount of charcoal, the correct order is:

(1) C \(>\) B \(>\) D \(>\) A.
(2) C \(>\) D \(>\) B \(>\) A.
(3) D \(>\) C \(>\) A \(>\) B.
(4) D \(>\) C \(>\) B \(>\) A.

Correct Answer: (4) D \(>\) C \(>\) B\(>\) A.
View Solution

Question 3:

Given below are two statements:

Assertion A: 5f electrons can participate in bonding to a far greater extent than 4f electrons.

Reason R: 5f orbitals are not as buried as 4f orbitals.

In light of the above statements, choose the correct answer from the options given below:

(1) Both A and R are true but R is NOT the correct explanation of A.
(2) Both A and R are true and R is the correct explanation of A.
(3) A is false but R is true.
(4) A is true but R is false.

Correct Answer: (2) Both A and R are true and R is the correct explanation of A.
View Solution

Question 4:

The incorrect statement regarding the reaction given below is:

(1) The electrophile involved in the reaction is NO\(^+\)
(2) 'B' is N-nitroso ammonium compound
(3) The reaction occurs at low temperature
(4) The product 'B' formed in the above reaction is p-nitroso compound at low temperature

Correct Answer: (2) 'B' is N-nitroso ammonium compound
View Solution

Question 5:

Match List I with List II

Choose the correct answer from the options given below:

(1) A-I, B-IV, C-II, D-III.
(2) A-II, B-III, C-I, D-IV.
(3) A-I, B-II, C-IV, D-III.
(4) A-III, B-IV, C-I, D-II.

Correct Answer: (1) A-I, B-IV, C-II, D-III.
View Solution

Question 6:

Match List I with List II

Choose the correct answer from the options given below:

(1) A-IV, B-I, C-III, D-II.
(2) A-IV, B-III, C-I, D-II.
(3) A-II, B-IV, C-I, D-III.
(4) A-II, B-I, C-IV, D-III.

Correct Answer: (4) A-II, B-I, C-IV, D-III.
View Solution

Question 7:

The density of alkali metals is in the order:

(1) Na \(<\) K \(<\) Cs \(<\) Rb.
(2) K \(<\) Na \(<\) Rb \(<\) Cs.
(3) K \(<\) Cs \(<\) Na \(<\) Rb.
(4) Na \(<\) Rb \(<\) K \(<\) Cs.

Correct Answer: (2) K \(<\) Na \(<\) Rb \(<\) Cs.
View Solution

Question 8:

Given below are two statements:
Statements I: SbCl5 is more covalent than SbCl3
Statements II: The higher oxides of halogens also tend to be more stable than the lower ones.
In light of the above statements, choose the most appropriate answer from the options given below:

(1) Both statement I and Statement II are correct
(2) Both statement I and Statement II are incorrect
(3) Statement I is correct but Statement II is incorrect
(4) Statement I is incorrect but Statement II is correct

Correct Answer: (1)
View Solution

Question 9:

A metal chloride contains 55.0% of chlorine by weight. 100 mL vapours of the metal chloride at STP weigh 0.57 g. The molecular formula of the metal chloride is: (Given: Atomic mass of chlorine is 35.5 u)

(1) MCl\(_2\)
(2) MCl\(_4\)
(3) MCl\(_3\)
(4) MCl

Correct Answer: (1)
View Solution

Question 10:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: In the Ellingham diagram, a sharp change in the slope of the line is observed for \( Mg \rightarrow MgO \) at \( \sim 1120^\circ C \).
Reason R: There is a large change of entropy associated with the change of state.
In light of the above statements, choose the correct answer from the options given below:

(1) Both A and R are true but R is NOT the correct explanation of A.
(2) Both A and R are true and R is the correct explanation of A.
(3) A is false but R is true.
(4) A is true but R is false.

Correct Answer: (2) Both A and R are true and R is the correct explanation of A.
View Solution

Question 11:

Match List I with List II

Choose the correct answer from the options given below:

(1) A-IV, B-III, C-II, D-I.
(2) A-II, B-III, C-I, D-IV.
(3) A-I, B-IV, C-II, D-III.
(4) A-IV, B-II, C-III, D-I.

Correct Answer: (1) A-IV, B-III, C-II, D-I.
View Solution

Question 12:

For lead storage battery pick the correct statements:
A. During charging of battery, PbSO\(_4\) on anode is converted into PbO\(_2\)

B. During charging of battery, PbSO\(_4\) on cathode is converted into PbO\(_2\)
C. Lead storage battery, consists of grid of lead packed with PbO\(_2\) as anode
D. Lead storage battery has \(\sim 38%\) solution of sulphuric acid as an electrolyte
Choose the correct answer from the options given below:

(1) B, D only
(2) B, C, D only
(3) A, B, D only
(4) B, C only

Correct Answer: (1)
View Solution

Question 13:

(1) Butanoic acid and acetic acid
(2) Butanal and acetic acid
(3) Butanal and acetaldehyde
(4) Butanoic acid and acetaldehyde

Correct Answer: (1) Butanoic acid and acetic acid

View Solution

Question 14:

Correct statements for the given reaction are:

A. Compound 'B' is aromatic

B. The completion of the above reaction is very slow

C. 'A' shows tautomerism

D. The bond lengths C-C in compound 'B' are found to be same

Choose the correct answer from the options given below:

(1) A, B and D only
(2) A, B and C only
(3) B, C and D only
(4) A, C and D only

Correct Answer: (4) A, C and D only
View Solution

Question 15:

The bond order and magnetic property of acetylide ion are same as that of:

(1) NO\(^+\).
(2) O\(_2^+\).
(3) O\(_2^-\).
(4) N\(_2^+\).

Correct Answer: (1) NO\(^+\).
View Solution

Question 16:

In the given reaction cycle

Correct Answer: (3) \(\text{CaCO}_3 \, \text{NaCl} \, \text{HCl}\)
View Solution

Question 17:

Given below are two statements:

Statement I: Boron is extremely hard indicating its high lattice energy.

Statement II: Boron has the highest melting and boiling point compared to its other group members.

(1) Statement I is incorrect but Statement II is correct
(2) Both Statement I and Statement II are correct
(3) Statement I is correct but Statement II is incorrect
(4) Both Statement I and Statement II are incorrect

Correct Answer: (2) Both Statement I and Statement II are correct
View Solution

Question 18:

Correct Answer: (3)

View Solution

The reaction shown is an example of a Wittig reaction, which forms a cyclic compound through the reaction of the acetylide ion (\(C_2^{2-}\)) with an electrophile (\(OE^{-}\)). The acetylide ion undergoes a [2+2] cycloaddition with the electrophile to form a cyclic intermediate, which upon heating gives a cyclic product containing a carbonyl group.

The acetylide ion (\(C_2^{2-}\)) reacts with the electrophile in a manner that results in the formation of a five-membered cyclic compound, A, containing a carbonyl group. This is consistent with the structure shown in option (3).
Quick Tip: The Wittig reaction typically involves the reaction of an acetylide ion with an electrophile to form a new carbon-carbon bond, which often results in the formation of a cyclic structure. Heating can help drive this reaction to completion.

Question 19:

Match List I with List II

(1) A-III, B-II, C-IV, D-I
(2) A-II, B-III, C-IV, D-I
(3) A-II, B-III, C-I, D-IV
(4) A-III, B-II, C-I, D-IV

Correct Answer: (1) A-III, B-II, C-IV, D-I
View Solution

Question 20:

The major product \(P\) formed in the following sequence of reactions is:

Correct Answer: (4) {H-N-R} O}
View Solution

Question 21:

One mole of an ideal gas at 350K is in a 2.0 L vessel of thermally conducting walls, which are in contact with the surroundings. It undergoes isothermal reversible expansion from 2.0L to 3.0L against a constant pressure of 4 atm. The change in entropy of the surroundings \(\Delta S\) is ______ J K\(^{-1}\) (Nearest integer).

Given \(R = 8.314\) J K\(^{-1}\) Mol\(^{-1}\).

Correct Answer: 3 J K\(^{-1}\)
View Solution

Question 22:

The mass of NH\(_3\) produced when 131.8 kg of cyclohexanecarbaldehyde undergoes Tollens test is ______ kg. (Nearest Integer)
Given: Molar Mass of C = 12 g/mol, N = 14 g/mol, O = 16 g/mol.

Correct Answer: 60 kg

View Solution

The chemical equation for the reaction is:
\[ Cyclohexanecarbaldehyde + 2 [Ag(NH_3)_2] OH \rightarrow Cyclohexanecarboxamide + 3 NH_3 + 2 Ag + H_2O \]

We are given the mass of cyclohexanecarbaldehyde:
\[ Mass of cyclohexanecarbaldehyde = 131.8 \, kg \]

The molecular weight of cyclohexanecarbaldehyde:
\[ Molecular weight = 12 \times 6 + 14 + 16 = 112 \, g/mol \]

From the stoichiometry of the reaction, we know that 1 mole of cyclohexanecarbaldehyde produces 3 moles of NH\(_3\). The number of moles of cyclohexanecarbaldehyde is:
\[ Moles of cyclohexanecarbaldehyde = \frac{131.8 \times 1000}{112} = 1176.8 \, mol \]

Since 1 mole of cyclohexanecarbaldehyde produces 3 moles of NH\(_3\), the moles of NH\(_3\) produced are:
\[ Moles of NH_3 = 3 \times 1176.8 = 3530.4 \, mol \]

The molar mass of NH\(_3\) is:
\[ Molar mass of NH_3 = 17 \, g/mol \]

The mass of NH\(_3\) produced is:
\[ Mass of NH_3 = 3530.4 \times 17 = 60,023.2 \, g = 60 \, kg \]

Thus, the mass of NH\(_3\) produced is:
\[ \boxed{60 \, kg} \] Quick Tip: In reactions like Tollens' test, always pay attention to the stoichiometry between the reactants and products to correctly calculate the mass of the desired product.

Question 23:

In an oligopeptide named Alanylglycylphenylalanylisoleucine, the number of \( sp^2 \) hybridised carbons is __________.

Correct Answer: 10

View Solution

Question 24:

An analyst wants to convert 1L HCl of pH = 1 to a solution of HCl of pH 2. The volume of water needed to do this dilution is ______ mL. (Nearest Integer)

Correct Answer: 9000 mL

View Solution

Question 25:

Three organic compounds A, B, and C were allowed to run in thin layer chromatography using hexane and gave the following result. The Rf value of the most polar compound is ________ x \(10^{-2}\)

(1) 25
(2) 0.25
(3) 0.75
(4) 1

Correct Answer: (25)
View Solution

Question 26:

80 mole percent of MgCl\(_2\) is dissociated in aqueous solution. The vapour pressure of 1.0 molal aqueous solution of MgCl\(_2\) at 38°C is ______ mm Hg. (Nearest integer)

Correct Answer: (48)
View Solution

Question 27:

The value of \( x \) in compound \( D \) is

Correct Answer: (3)
View Solution

Question 28:

At 600K, the root mean square (rms) speed of gas X (molar mass = 40) is equal to the most probable speed of gas Y at 90K. The molar mass of gas Y is ______ g/mol (Nearest integer).

Correct Answer: 4 g/mol
View Solution

Question 29:

The reaction \( 2NO + Br_2 \to 2NOBr \) takes place through the mechanism given below: \[ NO + Br_2 \leftrightarrow NOB_2 \quad (fast) \] \[ NOB_2 + NO \to 2NOBr \quad (slow) \]

The overall order of the reaction is _______.

Correct Answer: 3
View Solution

Question 30:

Values of work function (\(W_0\)) for a few metals are given below.
The number of metals which will show the photoelectric effect when light of wavelength 400 nm falls on it is

Correct Answer: 3
View Solution

JEE Main 2023 Chemistry Paper Analysis April 12 Shift 1

JEE Main 2023 Chemistry Paper Analysis for the exam scheduled on April 12 Shift 1 is available here. Candidates can check subject-wise paper analysis for the exam scheduled on April 12 Shift 1 here along with the topics with the highest weightage.

JEE Main 2023 Chemistry Paper Analysis April 12 Shift 1

JEE Main 2023 Chemistry Question Paper Pattern

Feature	Question Paper Pattern
Examination Mode	Computer-based Test
Exam Language	13 languages (English, Hindi, Assamese, Bengali, Gujarati, Kannada, Malayalam, Marathi, Odia, Punjabi, Tamil, Telugu, and Urdu)
Exam Duration	3 hours
Sectional Time Limit	None
Chemistry Marks	100 marks
Total Number of Questions Asked	20 MCQs + 10 Numerical Type Questions
Total Number of Questions to be Answered	20 MCQs + 5 Numerical Type Questions
Marking Scheme	+4 for each correct answer
Negative Marking	-1 for each incorrect answer

Also Check:

JEE Main Chemistry Question Paper Pattern	JEE Main Chapter-wise Weightage

JEE Main Previous Year Question Paper

JEE Main 2022 Question Paper	JEE Main 2021 Question Paper	JEE Main 2020 Question Paper
JEE Main 2019 Question Paper	JEE Main 2018 Question Paper	JEE Main 2017 Question Paper

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pwd	500
Others	900

JEE Main 2023 Chemistry April 12 Shift 1 Question Paper with Solution PDF- Download Here

JEE Main 2023 Chemistry Question Paper April 12 Shift 1 PDF

JEE Main 2023 Chemistry Paper Analysis April 12 Shift 1

JEE Main 2023 Chemistry Question Paper Pattern

JEE Main Previous Year Question Paper

JEE Main Questions

1.
'X' is the number of acidic oxides among $ VO_2, V_2O_3, CrO_3, V_2O_5 $ and $ Mn_2O_7 $. The primary valency of cobalt in $ [Co(H_2NCH_2CH_2NH_2)_3]_2 (SO_4)_3 $ is Y. The value of X + Y is :

3.
A compound 'X' absorbs 2 moles of hydrogen and 'X' upon oxidation with KMnO4 - H⁺ gives the following products:
The total number of \(\sigma\) bonds present in the compound 'X' is ----.

4.
The motion of an airplane is represented by the velocity-time graph as shown below. The distance covered by the airplane in the first 30.5 seconds is km.

5.
Let $ f: \mathbb{R} \to \mathbb{R} $ be a twice differentiable function such that $$ f''(x)\sin\left(\frac{x}{2}\right) + f'(2x - 2y) = (\cos x)\sin(y + 2x) + f(2x - 2y) $$ for all $ x, y \in \mathbb{R} $. If $ f(0) = 1 $, then the value of $ 24f^{(4)}\left(\frac{5\pi}{3}\right) $ is:

6.
In a group of 3 girls and 4 boys, there are two boys \( B_1 \) and \( B_2 \). The number of ways in which these girls and boys can stand in a queue such that all the girls stand together, all the boys stand together, but \( B_1 \) and \( B_2 \) are not adjacent to each other, is:

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JEE Main 2023 Chemistry Question Paper April 12 Shift 1 PDF

JEE Main 2023 Chemistry Paper Analysis April 12 Shift 1

JEE Main 2023 Chemistry Question Paper Pattern

JEE Main Previous Year Question Paper

JEE Main Questions

1.'X' is the number of acidic oxides among $ VO_2, V_2O_3, CrO_3, V_2O_5 $ and $ Mn_2O_7 $. The primary valency of cobalt in $ [Co(H_2NCH_2CH_2NH_2)_3]_2 (SO_4)_3 $ is Y. The value of X + Y is :

3.A compound 'X' absorbs 2 moles of hydrogen and 'X' upon oxidation with KMnO4 - H⁺ gives the following products:The total number of \(\sigma\) bonds present in the compound 'X' is ----.

4.The motion of an airplane is represented by the velocity-time graph as shown below. The distance covered by the airplane in the first 30.5 seconds is km.

5.Let $ f: \mathbb{R} \to \mathbb{R} $ be a twice differentiable function such that $$ f''(x)\sin\left(\frac{x}{2}\right) + f'(2x - 2y) = (\cos x)\sin(y + 2x) + f(2x - 2y) $$ for all $ x, y \in \mathbb{R} $. If $ f(0) = 1 $, then the value of $ 24f^{(4)}\left(\frac{5\pi}{3}\right) $ is:

6.In a group of 3 girls and 4 boys, there are two boys \( B_1 \) and \( B_2 \). The number of ways in which these girls and boys can stand in a queue such that all the girls stand together, all the boys stand together, but \( B_1 \) and \( B_2 \) are not adjacent to each other, is:

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1.
'X' is the number of acidic oxides among $ VO_2, V_2O_3, CrO_3, V_2O_5 $ and $ Mn_2O_7 $. The primary valency of cobalt in $ [Co(H_2NCH_2CH_2NH_2)_3]_2 (SO_4)_3 $ is Y. The value of X + Y is :

3.
A compound 'X' absorbs 2 moles of hydrogen and 'X' upon oxidation with KMnO4 - H⁺ gives the following products:
The total number of \(\sigma\) bonds present in the compound 'X' is ----.

4.
The motion of an airplane is represented by the velocity-time graph as shown below. The distance covered by the airplane in the first 30.5 seconds is km.

5.
Let $ f: \mathbb{R} \to \mathbb{R} $ be a twice differentiable function such that $$ f''(x)\sin\left(\frac{x}{2}\right) + f'(2x - 2y) = (\cos x)\sin(y + 2x) + f(2x - 2y) $$ for all $ x, y \in \mathbb{R} $. If $ f(0) = 1 $, then the value of $ 24f^{(4)}\left(\frac{5\pi}{3}\right) $ is:

6.
In a group of 3 girls and 4 boys, there are two boys \( B_1 \) and \( B_2 \). The number of ways in which these girls and boys can stand in a queue such that all the girls stand together, all the boys stand together, but \( B_1 \) and \( B_2 \) are not adjacent to each other, is: