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Chemistry · PYQ NEET UG 2017
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Chemistry · PYQ NEET UG 2017
Which one is the most acidic compound?
Read answer →Chemistry · PYQ NEET UG 2017
Identify A and predict the type of reaction.\n(Reaction: Chloro/bromo anisole with \( \text{NaNH}_2 \) yielding substitution product)
Read answer →Chemistry · PYQ NEET UG 2017
Which of the following statements is NOT CORRECT?
Read answer →Chemistry · PYQ NEET UG 2017
Which one is the CORRECT order of acidity?\n(A) \( \text{CH}\equiv\text{CH} > \text{CH}_2=\text{CH}_2 > \text{CH}_3-\text{CH}=\text{CH}_2 > \text{CH}_3-\text{C}\equiv\text{CH} > \text{CH}_3-\text{CH}_3 \)\n(B) \( \text{CH}\equiv\text{CH} > \text{CH}_3-\text{C}\equiv\text{CH} > \text{CH}_2=\text{CH}_2 > \text{CH}_3-\text{CH}_2 \)
Read answer →Chemistry · PYQ NEET UG 2017
The most suitable method of separation of 1:1 mixture of ortho and para-nitrophenol is
Read answer →Chemistry · PYQ NEET UG 2017
Mixture of chloroxylenol and terpineol acts as
Read answer →Chemistry · PYQ NEET UG 2017
Which of the following is dependent on temperature?
Read answer →Chemistry · PYQ NEET UG 2017
Which of the following reactions is appropriate for converting acetamide to methanamine?
Read answer →Chemistry · PYQ NEET UG 2017
If molarity of the dilute solutions is doubled, the value of molal depression constant (\( K_f \)) will be
Read answer →Chemistry · PYQ NEET UG 2017
Which is the INCORRECT statement?
Read answer →Chemistry · PYQ NEET UG 2017
Mechanism of a hypothetical reaction \( \text{X}_2 + \text{Y}_2 \longrightarrow 2\text{XY} \) is given below:\n(i) \( \text{X}_2 \longrightarrow \text{X} + \text{X} \dots \) fast\n(ii) \( \text{X} + \text{Y}_2 \longrightarrow \text{XY} + \text{Y} \dots \) slow\n(iii) \( \text{X} + \text{Y} \longrightarrow \text{XY} \dots \) fast\nThe overall order of the reaction will be _______.
Read answer →Chemistry · PYQ NEET UG 2017
For a given reaction, \( \Delta H = 35.5\text{ kJ mol}^{-1} \) and \( \Delta S = 83.6\text{ J K}^{-1}\text{ mol}^{-1} \). The reaction is spontaneous at _______.\n(Assume that \( \Delta H \) and \( \Delta S \) do not vary with temperature)
Read answer →Chemistry · PYQ NEET UG 2017
The CORRECT statement regarding electrophile is:
Read answer →Chemistry · PYQ NEET UG 2017
Extraction of gold and silver involves leaching with \( \text{CN}^- \) ion. Silver is later recovered by
Read answer →Chemistry · PYQ NEET UG 2017
\( \text{HgCl}_2 \) and \( \text{I}_2 \) both when dissolved in water containing \( \text{I}^- \) ions the pair of species formed is:
Read answer →Chemistry · PYQ NEET UG 2017
A 20 litre container at 400 K contains \( \text{CO}_2\text{(g)} \) at pressure \( 0.4\text{ atm} \) and an excess of \( \text{SrO} \) (neglect the volume of solid \( \text{SrO} \)). The volume of the container is now decreased by moving the movable piston fitted in the container. The maximum volume of the container, when pressure of \( \text{CO}_2 \) attains its maximum value, will be _______.\n(Given that: \( \text{SrCO}_{3\text{(s)}} \rightleftharpoons \text{SrO}_{\text{(s)}} + \text{CO}_{2\text{(g)}} \), \( K_{\text{p}} = 1.6\text{ atm} \))
Read answer →Chemistry · PYQ NEET UG 2017
In which pair of ions both the species contain S-S bond?
Read answer →Chemistry · PYQ NEET UG 2017
Concentration of the \( \text{Ag}^+ \) ions in a saturated solution of \( \text{Ag}_2\text{C}_2\text{O}_4 \) is \( 2.2 \times 10^{-4} \text{ mol L}^{-1} \). Solubility product of \( \text{Ag}_2\text{C}_2\text{O}_4 \) is
Read answer →Chemistry · PYQ NEET UG 2017
Which one of the following pairs of species have the same bond order?
Read answer →Chemistry · PYQ NEET UG 2017
Consider the following reactions: \( \text{X} \xrightarrow[\text{573 K}]{\text{Cu}} \text{A} \xrightarrow[\text{OH}^-/\Delta]{\text{[Ag(NH}_3\text{)}_2\text{]}^+} \text{Silver mirror observed} \) \( \text{A} \xrightarrow[\text{OH}^-/\Delta] \text{Y} \xrightarrow{\text{H}^+} \text{Z} \) \( \text{A} \xrightarrow[\text{NH}_2-\text{NH}-\text{C}-\text{NH}_2] \text{Z} \text{ (incorrect reaction label in diagram, representing semicarbazone formation)} \)\nIdentify \( \text{X}, \text{Y} \) and \( \text{Z} \).
Read answer →Chemistry · PYQ NEET UG 2017
Ionic mobility of which of the following alkali metal ions is lowest when aqueous solutions of their salts are put under an electric field?
Read answer →Chemistry · PYQ NEET UG 2017
In the electrochemical cell, \( \text{Zn} \mid \text{ZnSO}_4(0.01 \text{ M}) \parallel \text{CuSO}_4(1.0 \text{ M}) \mid \text{Cu} \), the emf of this Daniel Cell is \( \text{E}_1 \). When the concentration of \( \text{ZnSO}_4 \) is changed to \( 1.0 \text{ M} \) and that of \( \text{CuSO}_4 \) changed to \( 0.01 \text{ M} \), the emf changes to \( \text{E}_2 \). From the following, which one is the relationship between \( \text{E}_1 \) and \( \text{E}_2 \) (Given, \( \frac{\text{RT}}{\text{F}} = 0.059 \))?
Read answer →Chemistry · PYQ NEET UG 2017
