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Chemistry · PYQ NEET UG 2022
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Chemistry · PYQ NEET UG 2022
Identify the INCORRECT statement from the following.
Read answer →Chemistry · PYQ NEET UG 2022
For a first order reaction \( \text{A} \longrightarrow \text{Products} \), initial concentration of \( \text{A} \) is \( 0.1 \text{ M} \), which becomes \( 0.001 \text{ M} \) after 5 minutes. Rate constant for the reaction in \( \text{min}^{-1} \) is
Read answer →Chemistry · PYQ NEET UG 2022
Match List-I with List-II: List-I List-II i Li a Absorbent for carbon dioxide ii Na b Electrochemical cells iii KOH c Coolant in fast breeder reactors iv Cs d Photoelectric cell Choose the CORRECT answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2022
Which one of the following is NOT formed when acetone reacts with 2-pentanone in the presence of dilute \( \text{NaOH} \) followed by heating?
Read answer →Chemistry · PYQ NEET UG 2022
The IUPAC name of an element with atomic number 119 is:
Read answer →Chemistry · PYQ NEET UG 2022
Given below are two statements: Statement I: The acidic strength of monosubstituted nitrophenol is higher than phenol because of electron withdrawing 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:
Read answer →Chemistry · PYQ NEET UG 2022
The Kjeldahl's method for the estimation of nitrogen can be used to estimate the amount of nitrogen in which one of the following compounds?
Read answer →Chemistry · PYQ NEET UG 2022
Gadolinium has a low value of third ionisation enthalpy because of _______.
Read answer →Chemistry · PYQ NEET UG 2022
The CORRECT IUPAC name of the following compound is:
Read answer →Chemistry · PYQ NEET UG 2022
Given below are half cell reactions: \( \text{MnO}_4^- + 8\text{H}^+ + 5e^- \rightarrow \text{Mn}^{2+} + 4\text{H}_2\text{O}\,\,, E^\circ_{\text{Mn}^{2+}/\text{MnO}_4^-} = -1.510\text{ V} \) \( \frac{1}{2}\text{O}_2 + 2\text{H}^+ + 2e^- \rightarrow \text{H}_2\text{O}\,\,, E^\circ_{\text{O}_2/\text{H}_2\text{O}} = +1.223\text{ V} \) Will the permanganate ion, \( \text{MnO}_4^- \) liberate \( \text{O}_2 \) from water in the presence of an acid?
Read answer →Chemistry · PYQ NEET UG 2022
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In a particular point defect, an ionic solid is electrically neutral, even if few of its cations are missing from its unit cells. Reason (R): In an ionic solid, Frenkel defect arises due to dislocation of cation from its lattice site to interstitial site, maintaining overall electrical neutrality. In the light of the above statements, choose the most appropriate answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2022
A dehydration reaction links two glucose molecules to produce maltose. If the formula for glucose is \( \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 \) then what is the formula for maltose?
Read answer →Chemistry · PYQ NEET UG 2022
In one molal solution that contains \( 0.5 \) mole of a solute, there is _______.
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The IUPAC name of the complex \( [\text{Ag}(\text{H}_2\text{O})_2][\text{Ag}(\text{CN})_2] \) is:
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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): \( \text{ICl} \) is more reactive than \( \text{I}_2 \). Reason (R): \( \text{I}-\text{Cl} \) bond is weaker than \( \text{I}-\text{I} \) bond. In the light of the above statements, choose the most appropriate answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2022
Amongst the following which one will have maximum ‘lone pair – lone pair’ electron repulsions?
Read answer →Chemistry · PYQ NEET UG 2022
The order of energy absorbed which is responsible for the color of complexes (i) \( [\text{Ni}(\text{H}_2\text{O})_2(\text{en})_2]^{2+} \) (ii) \( [\text{Ni}(\text{H}_2\text{O})_4(\text{en})_2]^{2+} \) and (iii) \( [\text{Ni}(\text{en})_3]^{2+} \) is
Read answer →Chemistry · PYQ NEET UG 2022
The given graph is a representation of kinetics of a reaction. The y and x axes for zero and first order reactions, respectively are:
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Choose the CORRECT statement:
Read answer →Chemistry · PYQ NEET UG 2022
Given below are two statements: Statement I: The boiling points of aldehydes and ketones are higher than hydrocarbons of comparable molecular masses because of weak molecular association in aldehydes and ketones due to dipole-dipole interactions. Statement II: The boiling points of aldehydes and ketones are lower than the alcohols of similar molecular masses due to the absence of H-bonding. In the light of the above statements, choose the most appropriate answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2022
The pH of the solution containing \( 50\text{ mL} \) each of \( 0.10\text{ M} \) sodium acetate and \( 0.01\text{ M} \) acetic acid is _______. [Given \( \text{p}K_a \) of \( \text{CH}_3\text{COOH} = 4.57 \)]
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Match List-I with List-II: List-I (Ores) List-II (Composition) i Haematite a \( \text{Fe}_3\text{O}_4 \) ii Magnetite b \( \text{ZnCO}_3 \) iii Calamine c \( \text{Fe}_2\text{O}_3 \) iv Kaolinite d \( [\text{Al}_2(\text{OH})_4\text{Si}_2\text{O}_5] \) Choose the CORRECT answer from the options given below:
Read answer →Chemistry · PYQ NEET UG 2022
