Given below are two statements :
Statement (I) : Neopentane forms only one monosubstituted derivative.
Statement (II) : Melting point of neopentane is higher than n-pentane.
In the light of the above statements, choose the most appropriate answer from the options given below :
Match List - I with List - II.
List - I (Reaction) |
List - II (Name of reaction) |
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---|---|---|---|
(A) | ![]() |
(I) | Lucas reaction |
(B) | $$ \mathrm{ArN}_2^{+} \mathrm{X}^{-} \xrightarrow[\mathrm{HCl}]{\mathrm{Cu}} \mathrm{ArCl}+\mathrm{N}_2 \uparrow+\mathrm{CuX} $$ |
(II) | Finkelstein reaction |
(C) | $$ \mathrm{C}_2 \mathrm{H}_5 \mathrm{Br}+\mathrm{NaI} \xrightarrow[\text { Acetone }]{\text { Dry }} \mathrm{C}_2 \mathrm{H}_5 \mathrm{I}+\mathrm{NaBr} $$ |
(III) | Fittig reaction |
(D) | $$ \mathrm{CH}_3 \mathrm{C}(\mathrm{OH})\left(\mathrm{CH}_3\right) \mathrm{CH}_3 \xrightarrow[\mathrm{ZnCl}_2]{\mathrm{HCl}} \mathrm{CH}_3 \mathrm{C}(\mathrm{Cl})\left(\mathrm{CH}_3\right) \mathrm{CH}_3 $$ |
(IV) | Gatterman reaction |
$$ \text { Choose the correct answer from the options given below : } $$
Electronic configuration of four elements A, B, C and D are given below :
(A) $1 s^2 2 s^2 2 p^3$
(B) $1 s^2 2 s^2 2 p^4$
(C) $1 s^2 2 s^2 2 p^5$
(D) $1 s^2 2 s^2 2 p^2$
Which of the following is the correct order of increasing electronegativity (Pauling's scale)?
Which of the following statements are true?
(A) The subsidiary quantum number $l$ describes the shape of the orbital occupied by the electron.
(B) is the boundary surface diagram of the $2 \mathrm{p}_x$ orbital.
(C) The + and - signs in the wave function of the $2 p_x$ orbital refer to charge.
(D) The wave function of $2 \mathrm{p}_x$ orbital is zero everywhere in the $x y$ plane.
Choose the correct answer from the options given below :
Arrange the following in order of magnitude of work done by the system/on the system at constant temperature.
(a) $\left|w_{\text {reversible }}\right|$ for expansion in infinite stages.
(b) $\left|w_{\text {irreversible }}\right|$ for expansion in single stage.
(c) $\left|\mathrm{w}_{\text {reversible }}\right|$ for compression in infinite stages.
(d) $\left|w_{\text {irreversible }}\right|$ for compression in single stage.
Choose the correct answer from the options given below :
When a concentrated solution of sulphanilic acid and 1-naphthylamine is treated with nitrous acid $(273 \mathrm{~K})$ and acidified with acetic acid, the mass $(\mathrm{g})$ of 0.1 mole of product formed is :
(Given molar mass in $\mathrm{g} \mathrm{mol}^{-1} \mathrm{H}: 1, \mathrm{C}: 12, \mathrm{~N}: 14, \mathrm{O}: 16, \mathrm{~S}: 32$ )
Consider the following reactions. From these reactions which reaction will give carboxylic acid as a major product ?
(A) $\quad \mathrm{R}-\mathrm{C} \equiv \mathrm{N} \xrightarrow[\text { mild condition }]{\text { (i) } \stackrel{+}{\mathrm{H}} / \mathrm{H}_2 \mathrm{O}}$
(B) $\quad \mathrm{R}-\mathrm{MgX} \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{CO}_2}$
(C) $\mathrm{R}-\mathrm{C} \equiv \mathrm{N} \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{SnCl}_2 / \mathrm{HCl}}$
(D) $\quad \mathrm{R} \cdot \mathrm{CH}_2 \cdot \mathrm{OH} \xrightarrow{\mathrm{PCC}}$
(E)
Choose the correct answer from the options given below :
' $x$ ' g of NaCl is added to water in a beaker with a lid. The temperature of the system is raised from $1^{\circ} \mathrm{C}$ to $25^{\circ} \mathrm{C}$. Which out of the following plots, is best suited for the change in the molarity $(\mathrm{M})$ of the solution with respect to temperature ?
[Consider the solubility of NaCl remains unchanged over the temperature range]
$$ \text { Match List - I with List - II. } $$
List - I (Purification technique) |
List - II (Mixture of organic compounds) |
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---|---|---|---|
(A) | $$ \text { Distillation (simple) } $$ |
(I) | Diesel + Petrol |
(B) | $$ \text { Fractional distillation } $$ |
(II) | Aniline + Water |
(C) | $$ \text { Distillation under reduced pressure } $$ |
(III) | Chloroform + Aniline |
(D) | $$ \text { Steam distillation } $$ |
(IV) | Glycerol + Spent-lye |
$$ \text { Choose the correct answer from the options given below : } $$
Consider the following chemical equilibrium of the gas phase reaction at a constant temperature : $\mathrm{A}(\mathrm{g}) \rightleftharpoons \mathrm{B}(\mathrm{g})+\mathrm{C}(\mathrm{g})$
If $p$ being the total pressure, $K_p$ is the pressure equilibrium constant and $\alpha$ is the degree of dissociation, then which of the following is true at equilibrium?
For the reaction $\mathrm{A} \rightarrow \mathrm{B}$ the following graph was obtained. The time required (in seconds) for the concentration of A to reduce to $2.5 \mathrm{~g} \mathrm{~L}^{-1}$ (if the initial concentration of A was $50 \mathrm{~g} \mathrm{~L}^{-1}$ ) is $\qquad$ . (Nearest integer)
Given : $\log 2=0.3010$
When 1 g each of compounds AB and $\mathrm{AB}_2$ are dissolved in 15 g of water separately, they increased the boiling point of water by 2.7 K and 1.5 K respectively. The atomic mass of A (in $a m u$ ) is____________ $\times 10^{-1}$ (Nearest integer)
(Given : Molal boiling point elevation constant is $0.5 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$ )
Consider the above sequence of reactions. 151 g of 2-bromopentane is made to react. Yield of major product P is $80 \%$ whereas Q is $100 \%$.
Mass of product Q obtained is________ g.
(Given molar mass in $\mathrm{g} \mathrm{mol}^{-1} \mathrm{H}: 1, \mathrm{C}: 12, \mathrm{O}: 16, \mathrm{Br}: 80$ )