JEE Main 2024 Feb 1 Shift 2 — Chemistry

The number of radial node/s for 3p orbital is :

Given below are two statements :

Statement (I) : A $\pi$ bonding MO has lower electron density above and below the inter-nuclear axis.

Statement (II) : The $\pi^*$ antibonding MO has a node between the nuclei.

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

Select the compound from the following that will show intramolecular hydrogen bonding.

Solubility of calcium phosphate (molecular mass, M) in water is $\mathrm{W_g}$ per 100 mL at $25\,^\circ\mathrm{C}$. Its solubility product at $25\,^\circ\mathrm{C}$ will be approximately.

Given below are two statements :

Statement (I) : Both metals and non-metals exist in p and d-block elements.

Statement (II) : Non-metals have higher ionisation enthalpy and higher electronegativity than the metals.

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

The strongest reducing agent among the following is :

Given below are two statements :

Statement (I) : $\mathrm{SiO_2}$ and $\mathrm{GeO_2}$ are acidic while $\mathrm{SnO}$ and $\mathrm{PbO}$ are amphoteric in nature.

Statement (II) : Allotropic forms of carbon are due to property of catenation and $\mathrm{p\pi\text{-}d\pi}$ bond formation.

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

The transition metal having highest $3^{\text{rd}}$ ionisation enthalpy is :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : In aqueous solutions $\mathrm{Cr^{2+}}$ is reducing while $\mathrm{Mn^{3+}}$ is oxidising in nature.

Reason (R) : Extra stability to half filled electronic configuration is observed than incompletely filled electronic configuration.

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

$\mathrm{[Co(NH_3)_6]^{3+}}$ and $\mathrm{[CoF_6]^{3-}}$ are respectively known as :

Which of the following compounds show colour due to d-d transition ?

Lassaigne's test is used for detection of :

The functional group that shows negative resonance effect is :

The set of meta directing functional groups from the following sets is :

In the given reactions identify A and B

$\mathrm{H_2 + A \xrightarrow{Pd/C}}$

cis-alkene with $\mathrm{CH_3}$ and H on one doubly-bonded carbon and $\mathrm{C_2H_5}$ and H on the other, i.e. cis-pent-2-ene

$\mathrm{CH_3-C\equiv C-CH_3 + H_2 \xrightarrow{\text{Na/Liquid } NH_3}}$ "B"

Match List - I with List - II.

List - I (Compound)	List - II (Use)
(A) Carbon tetrachloride	(I) Paint remover
(B) Methylene chloride	(II) Refrigerators and air conditioners
(C) DDT	(III) Fire extinguisher
(D) Freons	(IV) Non Biodegradable insecticide

Choose the correct answer from the options given below :

Match List - I with List - II.

List - I (Reactants)	List - II (Product)
(A) Phenol, $\mathrm{Zn}/\Delta$	(I) Salicylaldehyde
(B) Phenol, $\mathrm{CHCl_3}$, NaOH, HCl	(II) Salicylic acid
(C) Phenol, $\mathrm{CO_2}$, NaOH, HCl	(III) Benzene
(D) Phenol, Conc. $\mathrm{HNO_3}$	(IV) Picric acid

Choose the correct answer from the options given below :

$\mathrm{C_2H_5Br \xrightarrow{\text{alc. KOH}} A \xrightarrow[CCl_4]{Br_2} B \xrightarrow[\text{Excess}]{KCN} C \xrightarrow[\text{Excess}]{H_3O^+} D}$

Acid D formed in above reaction is :

Which among the followng has highest boiling point ?

Given below are two statements :

Statement (I) : Dimethyl glyoxime forms a six-membered covalent chelate when treated with $\mathrm{NiCl_2}$ solution in presence of $\mathrm{NH_4OH}$.

Statement (II) : Prussian blue precipitate contains iron both in (+2) and (+3) oxidation states.

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

10 mL of gaseous hydrocarbon on combustion gives 40 mL of $\mathrm{CO_2(g)}$ and 50 mL of water vapour. Total number of carbon and hydrogen atoms in the hydrocarbon is ________.

For a certain reaction at 300K, $K = 10$, then $\Delta G^\circ$ for the same reaction is $-$________ $\times 10^{-1}\ \mathrm{kJ\ mol^{-1}}$. (Given $R = 8.314\ \mathrm{JK^{-1}\ mol^{-1}}$)

Mass of ethylene glycol (antifreeze) to be added to 18.6 kg of water to protect the freezing point at $-24\,^\circ\mathrm{C}$ is ________ kg (Molar mass in $\mathrm{g\ mol^{-1}}$ for ethylene glycol 62, $K_f$ of water $= 1.86\ \mathrm{K\ kg\ mol^{-1}}$)

The amount of electricity in Coulomb required for the oxidation of 1 mol of $\mathrm{H_2O}$ to $\mathrm{O_2}$ is ________ $\times 10^5$ C.

Consider the following redox reaction :

$$\mathrm{MnO_4^- + H^+ + H_2C_2O_4 \rightleftharpoons Mn^{2+} + H_2O + CO_2}$$

The standard reduction potentials are given as below $\left(E^\circ_{\text{red}}\right)$ :

$$E^\circ_{\mathrm{MnO_4^-/Mn^{2+}}} = +1.51\ \mathrm{V}$$

$$E^\circ_{\mathrm{CO_2/H_2C_2O_4}} = -0.49\ \mathrm{V}$$

If the equilibrium constant of the above reaction is given as $K_{eq} = 10^x$, then the value of $x =$ ________ (nearest integer)

The following data were obtained during the first order thermal decomposition of a gas A at constant volume :

$$\mathrm{A(g) \rightarrow 2B(g) + C(g)}$$

S.No.	Time/s	Total pressure/(atm)
1.	0	0.1
2.	115	0.28

The rate constant of the reaction is ________ $\times 10^{-2}\ \mathrm{s^{-1}}$ (nearest integer)

Following Kjeldahl's method, 1g of organic compound released ammonia, that neutralised 10 mL of 2M $\mathrm{H_2SO_4}$. The percentage of nitrogen in the compound is ________ %.

Total number of isomeric compounds (including stereoisomers) formed by monochlorination of 2-methylbutane is ________.

Number of compounds which give reaction with Hinsberg's reagent is ________.

eleven structures — benzenediazonium chloride $\mathrm{C_6H_5N_2^+Cl^-}$; N-benzoylbenzamide (dibenzimide) $\mathrm{(C_6H_5CO)_2NH}$; aniline $\mathrm{C_6H_5NH_2}$; N-phenylpiperidine; N-methylbenzylamine $\mathrm{C_6H_5CH_2NHCH_3}$; trimethylamine $\mathrm{(CH_3)_3N}$; ethane-1,2-diamine $\mathrm{H_2NCH_2CH_2NH_2}$; piperidine; pyridine; propan-1-amine $\mathrm{CH_3CH_2CH_2NH_2}$; urea $\mathrm{H_2N{-}CO{-}NH_2}$

The number of tripeptides formed by three different amino acids using each amino acid once is ________.