A(g) → B(g) + C(g) is a first order reaction. Time t ∞ Psystem Pt P∞ The reaction was started with reactant A only. Which of the following expressions is correct for rate constant k?

For ${\mathrm{A}}_2+{\mathrm{B}}_2\rightleftharpoons 2\mathrm{AB}$ ${\mathrm{E}}_{\mathrm{a}}$ for forward and backward reaction are 180 and $200\mathrm{kJ}{\mathrm{mol}}^{-1}$ respectively If catalyst lowers ${\mathrm{E}}_{\mathrm{a}}$ for both reaction by $100\mathrm{kJ}{\mathrm{mol}}^{-1}$. Which of the following statement is correct?

Rate law for a reaction between $A$ and $B$ is given by $$\mathrm{r}=\mathrm{k}[\mathrm{A}{]}^{\mathrm{n}}[\mathrm{B}{]}^{\mathrm{m}}$$ If concentration of $A$ is doubled and concentration of $B$ is halved from their initial value, the ratio of new rate of reaction to the initial rate of reaction $\left(\frac{r_2}{r_1}\right)$ is

Consider the following statements related to temperature dependence of rate constants. Identify the correct statements. A. The Arrhenius equation holds true only for an elementary homogenous reaction. B. The unit of $A$ is same as that of $k$ in Arrhenius equation. C. At a given temperature, a low activation energy means a fast reaction. D. A and Ea as used in Arrhenius equation depend on temperature. E. When $\mathrm{Ea}\gg \mathrm{RT},\mathrm{A}$ and Ea become interdependent. Choose the correct answer from the options given below:

Which one of the following, with HBr will give a phenol?

What amount of bromine will be required to convert 2 g of phenol into 2,4,6-tribromophenol? (Given molar mass in $\mathrm{g}{\mathrm{mol}}^{-1}$ of $\mathrm{C},\mathrm{H},\mathrm{O},\mathrm{Br}$ are $12,1,16,80$ respectively )

Given below are two statements : Statement (I) : The boiling points of alcohols and phenols increase with increase in the number of C -atoms. Statement (II) : The boiling points of alcohols and phenols are higher in comparison to other class of compounds such as ethers, haloalkanes. In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements : Statement I : Statement II : In , intramolecular substitution takes place first by involving lone pair of electrons on nitrogen. In the light of the above statements, choose the most appropriate answer from the options given below

Given below are two statements : Statement I : Dimethyl ether is completely soluble in water. However, diethyl ether is soluble in water to a very small extent. Statement II : Sodium metal can be used to dry diethyl ether and not ethyl alcohol. In the light of given statements. choose the correct answer from the options given below

Benzene is treated with oleum to produce compound $(\mathrm{X})$ which when further heated with molten sodium hydroxide followed by acidification produces compound $(\mathrm{Y})$. The compound Y is treated with zinc metal to produce compound $(Z)$. Identify the structure of compound $(Z)$ from the following option.

Given below are two statements: Statement I: In Lassaigne's test, the covalent organic molecules are transformed into ionic compounds. Statement II: The sodium fusion extract of an organic compound having N and S gives prussian blue colour with ${\mathrm{FeSO}}_4$ and ${\mathrm{Na}}_4\left[\mathrm{Fe}(\mathrm{CN}{)}_6\right]$ In the light of the above statements, choose the correct answer from the options given below

In Dumas' method for estimation of nitrogen, 0.5 gram of an organic compound gave 60 mL of nitrogen collected at 300 K temperature and 715 mm Hg pressure. The percentage composition of nitrogen in the compound (Aqueous tension at $300\mathrm{K}=15\mathrm{mm}\mathrm{Hg}$ ) is___________%.

$$\text{ Match List - I with List - II. }$$ .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-baqh{text-align:center;vertical-align:top} .tg .tg-c3ow{border-color:inherit;text-align:center;vertical-align:top} List - I (Purification technique) List - II (Mixture of organic compounds) (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 $$\text{ Choose the correct answer from the options given below : }$$

A mixture of 1 g each of chlorobenzene, aniline, and benzoic acid is dissolved in 50 mL ethyl acetate and placed in a separating funnel. 5 M NaOH (30 mL) was added in the same funnel. The funnel was shaken vigorously and then kept aside. The ethyl acetate layer in the funnel contains :

Match List - I with List - II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-c3ow{border-color:inherit;text-align:center;vertical-align:top} .tg .tg-7btt{border-color:inherit;font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0pky{border-color:inherit;text-align:left;vertical-align:top} List - I (Separation of) List - II (Separation Technique) (A) Aniline from aniline-water mixture (I) Simple distillation (B) Glycerol from spent-lye in soap industry (II) Fractional distillation (C) Different fractions of crude oil in petroleum industry (III) Distillation at reduced pressure (D) Chloroform-Aniline mixture (IV) Steam distillation Choose the correct answer from the options given below :

A toxic compound " A " when reacted with NaCN in aqueous acidic medium yields an edible cooking component and food preservative " B ". " B " is converted to " C " by diborane and can be used as an additive to petrol to reduce emission. "C" upon reaction with oleum at $140^{\circ }\mathrm{C}$ yields an inhalable anesthetic " D ". Identify " A ", " B ", " C " & " D ", respectively :

0.1 M solution of KI reacts with excess of ${\mathrm{H}}_2{\mathrm{SO}}_4$ and ${\mathrm{KIO}}_3$ solutions. According to equation $$5{\mathrm{I}}^{-}+{\mathrm{IO}}_3^{-}+6{\mathrm{H}}^{+}\to 3{\mathrm{I}}_2+3{\mathrm{H}}_2\mathrm{O}$$ Identify the correct statements : (A) 200 mL of KI solution reacts with 0.004 mol of ${\mathrm{KIO}}_3$ (B) 200 mL of KI solution reacts with 0.006 mol of ${\mathrm{H}}_2{\mathrm{SO}}_4$ (C) 0.5 L of KI solution produced 0.005 mol of ${\mathrm{I}}_2$ (D) Equivalent weight of ${\mathrm{KIO}}_3$ is equal to ( $\frac{\text{ Molecular weight }}{5}$ ) Choose the correct answer from the options given below :

The species which does not undergo disproportionation reaction is :

Given below are two statements: Statement I: In the oxalic acid vs ${\mathrm{KMnO}}_4$ (in the presence of dil ${\mathrm{H}}_2{\mathrm{SO}}_4$ ) titration the solution needs to be heated initially to $60^{\circ }\mathrm{C}$, but no heating is required in Ferrous ammonium sulphate (FAS) vs ${\mathrm{KMnO}}_4$ titration (in the presence of dil ${\mathrm{H}}_2{\mathrm{SO}}_4$) Statement II: In oxalic acid vs ${\mathrm{KMnO}}_4$ titration, the initial formation of ${\mathrm{MnSO}}_4$ takes place at high temperature, which then acts as catalyst for further reaction. In the case of FAS vs ${\mathrm{KMnO}}_4$, heating oxidizes ${\mathrm{Fe}}^{2+}$ into ${\mathrm{Fe}}^{3+}$ by oxygen of air and error may be introduced in the experiment. In the light of the above statements, choose the correct answer from the options given below

Match the List - I with List - II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-c3ow{border-color:inherit;text-align:center;vertical-align:top} .tg .tg-7btt{border-color:inherit;font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0pky{border-color:inherit;text-align:left;vertical-align:top} List - I (Redox Reaction) List - II (Type of Redox Reaction) (A) $\begin{array}{rl}& {\mathrm{CH}}_{4(\mathrm{g})}+2{\mathrm{O}}_{2(\mathrm{g})}\stackrel{\Delta }{\to }{\mathrm{CO}}_{2(\mathrm{g})}\\ & +2{\mathrm{H}}_2{\mathrm{O}}_{(\mathrm{l})}\end{array}$ (I) Disproportionation reaction (B) $2{\mathrm{NaH}}_{(\mathrm{s})}\stackrel{\Delta }{\to }2{\mathrm{Na}}_{(\mathrm{s})}+{\mathrm{H}}_{2(\mathrm{g})}$ (II) Combination reaction (C) $\begin{array}{rl}& {\mathrm{V}}_2{\mathrm{O}}_{5(\mathrm{s})}+5{\mathrm{Ca}}_{(\mathrm{s})}\stackrel{\Delta }{\to }2{\mathrm{V}}_{(\mathrm{s})}\\ & +5{\mathrm{CaO}}_{(\mathrm{s})}\end{array}$ (III) Decomposition reaction (D) $\begin{array}{rl}& 2{\mathrm{H}}_2{\mathrm{O}}_{2(\mathrm{aq})}\stackrel{\Delta }{⟶}2{\mathrm{H}}_2{\mathrm{O}}_{(\mathrm{l})}+\\ & {\mathrm{O}}_{2(\mathrm{g})}\end{array}$ (IV) Displacement reaction Choose the correct answer from the options given below: