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Chemistry · PYQ NEET UG 2024
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Chemistry · PYQ NEET UG 2024
Match List I with List II. List I (Conversion) A. 1 mol of \( H_2O \) to \( O_2 \) B. 1 mol of \( MnO_4^- \) to \( Mn^{2+} \) C. 1.5 mol of Ca from molten \( CaCl_2 \) D. 1 mol of FeO to \( Fe_2O_3 \) List II (Number of Faraday required) I. 3F II. 2F III. 1F IV. 5F Choose the correct answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2024
The highest number of helium atoms is in
Read answer →Chemistry · PYQ NEET UG 2024
Among Group 16 elements, which one does NOT show -2 oxidation state?
Read answer →Chemistry · PYQ NEET UG 2024
Match List I with List II. List I (Complex) A. \( [\text{Co}(\text{NH}_3)_5(\text{NO}_2)]\text{Cl}_2 \) B. \( [\text{Co}(\text{NH}_3)_5(\text{SO}_4)]\text{Br} \) C. \( [\text{Co}(\text{NH}_3)_6][\text{Cr}(\text{CN})_6] \) D. \( [\text{Co}(\text{H}_2\text{O})_6]\text{Cl}_3 \) List II (Type of isomerism) I. Solvate isomerism II. Linkage isomerism III. Ionization isomerism IV. Coordination isomerism Choose the correct answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2024
The Henry's law constant (\( K_H \)) values of three gases (A, B, C) in water are 145, \( 2 \times 10^{-5} \) and 35 kbar, respectively. The solubility of these gases in water follow the order:
Read answer →Chemistry · PYQ NEET UG 2024
Arrange the following elements in increasing order of first ionization enthalpy: Li, Be, B, C, N Choose the correct answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2024
For the reaction \( 2A \rightleftharpoons B + C \), \( K_c = 4 \times 10^{-3} \). At a given time, the composition of reaction mixture is: \( [A] = [B] = [C] = 2 \times 10^{-3}\text{ M} \). Then, which of the following is correct?
Read answer →Chemistry · PYQ NEET UG 2024
The highest number of helium atoms is in
Read answer →Chemistry · PYQ NEET UG 2024
During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of \( \text{Fe}^{2+} \) ion?
Read answer →Chemistry · PYQ NEET UG 2024
Identify the correct reagents that would bring about the following transformation.
Read answer →Chemistry · PYQ NEET UG 2024
The products A and B obtained in the following reactions, respectively, are: \( 3\text{ROH} + \text{PCl}_3 \rightarrow 3\text{RCl} + A \) \( \text{ROH} + \text{PCl}_5 \rightarrow \text{RCl} + \text{HCl} + B \)
Read answer →Chemistry · PYQ NEET UG 2024
'Spin only' magnetic moment is same for which of the following ions? A. \( \text{Ti}^{3+} \) B. \( \text{Cr}^{2+} \) C. \( \text{Mn}^{2+} \) D. \( \text{Fe}^{2+} \) E. \( \text{Sc}^{3+} \) Choose the most appropriate answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2024
Identify the correct answer.
Read answer →Chemistry · PYQ NEET UG 2024
Choose the correct answer from the options given below: Column I (Reaction)Column II (Reagents/Condition) AAlkene ozonolysisIAnhydrous \( \text{AlCl}_3 \) BFriedel-Crafts alkylationII\( \text{CrO}_3 \) COxidation of alkenes to carbonyl compoundsIII\( \text{KMnO}_4, \text{KOH}, \Delta \) DSide-chain oxidation of toluene to benzoic acidIV(i) \( \text{O}_3 \), (ii) \( \text{Zn-H}_2\text{O} \)
Read answer →Chemistry · PYQ NEET UG 2024
On heating, some solid substances change from solid to vapour state without passing through liquid state. The technique used for the purification of such solid substances based on the above principle is known as
Read answer →Chemistry · PYQ NEET UG 2024
Given below are two statements: Statement I : Aniline does not undergo Friedel-Crafts alkylation reaction. Statement II : Aniline cannot be prepared through Gabriel synthesis. In the light of the above statements, choose the correct answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2024
Match List I with List II. List I (Molecule) A. ethane B. ethene C. carbon molecule, C₂ D. ethyne List II (Number and types of bond/s between two carbon atoms) I. one σ-bond and two π-bonds II. two π-bonds III. one σ-bond IV. one σ-bond and one π-bond Choose the correct answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2024
Given below are two statements: Statement I : Aniline does not undergo Friedel-Crafts alkylation reaction. Statement II : Aniline cannot be prepared through Gabriel synthesis. In the light of the above statements, choose the correct answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2024
Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from 0 to VI.\nA. \( \text{Al}^{3+} \)\nB. \( \text{Cu}^{2+} \)\nC. \( \text{Ba}^{2+} \)\nD. \( \text{Co}^{2+} \)\nE. \( \text{Mg}^{2+} \) \nChoose the correct answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2024
Match List I with List II. List I (Compound) A. \( \text{NH}_3 \) B. \( \text{BrF}_5 \) C. \( \text{XeF}_4 \) D. \( \text{SF}_6 \) List II (Shape/geometry) I. Trigonal Pyramidal II. Square Planar III. Octahedral IV. Square Pyramidal Choose the correct answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2024
अंतःअणुक हाइड्रोजन आबंध किसमें उपस्थित है?
Read answer →Chemistry · PYQ NEET UG 2024
Given below are two statements:\n Statement I: \( [\text{Co}(\text{NH}_3)_6]^{3+} \) is a homoleptic complex whereas \( [\text{Co}(\text{NH}_3)_4\text{Cl}_2]^+ \) is a heteroleptic complex.\n Statement II: Complex \( [\text{Co}(\text{NH}_3)_6]^{3+} \) has only one kind of ligands but \( [\text{Co}(\text{NH}_3)_4\text{Cl}_2]^+ \) has more than one kind of ligands.\nIn the light of the above statements, choose the correct answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2024
