NEET 2022

188 Questions • 200 Minutes • 2022

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Given below are two statements: Statement I: In the coagulation of negative sol, the flocculating power of the three given ions is in the order- $Al^{3+} > Ba^{2+} > Na^+$ Statement II: In the coagulation of positive sol, the flocculating power of the three slats is in the order- $NaCl > Na_2SO_4 > Na_3PO_4$ In the light of the above statements, choose the most appropriate answer from the options given below:

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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): ICl is more reactive than $I_2$. Reason (R): I-Cl bond is weaker than I-I bond In the light of the above statements, choose the most appropriate answer from the options given below:

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Given below are two statements: Statement I: The boiling points of the following hydrides of group 16 elements increases in the order- $H_2O < H_2S < H_2Se < H_2Te$. Statement II: The boiling points of these hydrides increase with increase in molar mass. In the light of the above statements, choose the most appropriate answer from the options given below:

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Gadolinium has a low value of third ionisation enthalpy because of

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The IUPAC name of the complex- $[Ag(H_2O)_2][Ag(CN)_2]$ is:

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The incorrect statement regarding chirality is:

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Given below are two statements: Statement I: The acidic strength of monosubstituted nitrophenol is higher than phenol because of electron withdrowing nitro group. Statement II: o-nitrophenol, m-nitrophenol and p-nitrophenol will have same acidic strength as they have one nitro group attached to the phenolic ring. In the light of the above statements, choose the most appropriate answer from the options given below:

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$RMgX + CO_2 \xrightarrow{dry\ ether} Y \xrightarrow{H_3O^+} RCOOH$ What is Y in the above reaction?

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Given below are two statements: Statements: I The boiling points of aldehydes and ketones are higher than hydrocarbons of comparable molecular mass because of weak molecular association in aldehydes and ketones due to dipole - dipole interactions. Statements: II: The boiling points of aldehydes and ketones are lower than the alcohols of similar molecular mass due to the absence of H-bonding. In the light of the above statements, choose the most appropriate answer from the options given below:

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Match List-I with List-II. [table] List-I (Products formed) | List-II (Reaction of carbonyl compound with) ; (a) Cyanohydrin | (i) $NH_2OH$ ; (b) Acetal | (ii) $RNH_2$ ; (c) Schiff's base | (iii) alcohol ; (d) Oxime | (iv) HCN [/table] Choose the correct answer from the options given belwo:

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Given below are two statements: Statements I: Primary aliphatic amines react with $HNO_2$ to give unstable diazonium salts. Statements II: Primary aromatic amines react with $HNO_2$ to form diazonium salts which are stable even above 300 K. In the light of the above statements, choose the most appropriate answer from the options given below:

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The incorrect statement regarding enzymes is

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Which statement regarding polymers is not correct?

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Match List- I with List II. [table] List-I (Drug class) | List-II (Drug molecule) ; (a) Antacids | (i) Salvarsan ; (b) Antihistamines | (ii) Morphine ; (c) Analgesics | (iii) Cimetidine ; (d) Antimicrobials | (iv) Seldane [/table] Choose the correct answer from the options given below:

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If radius of second Bohr orbit of the $He^+$ ion is 105.8 pm, what is the radius of third Bohr orbit of $Li^{2+}$ ion?

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A 10.0 L flask contains 64 g of oxygen at 27° C. (Assume $O_2$ gas is behaving ideally). The pressure inside the flask in bar is (Given R = 0.0831 L bar $K^{-1}$ $mol^{-1}$)

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$3O_2(g) \rightleftharpoons 2O_3(g)$ for the given reaction at 298 K, $K_c$ is found to be $3.0 \times 10^{-59}$. If the concentration of $O_2$ at equilibrium is 0.040 M then concentration of $O_3$ in M is

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Compound X on reaction with $O_3$ followed by $Zn/H_2O$ gives formaldehyde and 2-methyl propanal as products. The compound X is:

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The pollution due to oxides of sulphur gets enhanced due to the presence of: A. particulate matter B. ozone C. hydrocarbons D. hydrogen peroxide Choose the most appropriate answer from the options given below:

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Copper crystallises in fcc unit cell with cell edge length of $3.608 \times 10^{-8}$ cm. The density of copper is 8.92 g $cm^{-3}$. Calculate the atomic mass of copper.

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Paper Info

Exam: NEET
Year: 2022
Questions: 188
Duration: 200 mins

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