KCET 2021

The major product of the following reaction is
\(\mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}_2-\mathrm{OH} \xrightarrow[\text { Excess }]{\mathrm{HBr}} \text { Product }\)

A compound \('A' \left(\mathrm{C}_7 \mathrm{H}_8 \mathrm{O}\right)\) is insoluble in \(\mathrm{NaHCO}_3\) solution but dissolve in \(\mathrm{NaOH}\) and give a characteristic colour with neutral \(\mathrm{FeCl}_3\) solution. When treated wi...

$$\begin{aligned}
& \mathrm{CH}_3 \mathrm{CHO} \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{CH}_3 \mathrm{MgBr}} A \xrightarrow[\Delta]{\text { Conc. } \mathrm{H}_2 \mathrm{SO}_4} \\
& B \xrightarrow[\text {...

\(A, B\) and \(C\) respectively are

An organic compound \(X\) on treatment with PCC in dichloromethane gives the compound \(Y\). Compound \(Y\) reacts with \(\mathrm{I}_2\) and alkali to form yellow precipitate of triiodomethane. The compound \(X\) is

Which is the most suitable reagent for the following conversion?

The number of angular and radial nodes in \(3 p\) orbital respectively are

Primary structure in a nucleic acid contain 3 bases as GATGC ... The chain which is complementary to this chain is

RNA and DNA are chiral molecules, their chirality is due to the presence of

The reagent which can do the conversion \(\mathrm{CH}_3 \mathrm{COOH} \longrightarrow \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{OH}\) is

The product '\(A\)' gives white precipitate when treated with bromine water. The product '\(B\)' is treated with barium hydroxide to give the product \(C\). The compound \(C\) is heated strongly to form product \(D\). The product \(D\) is

In set of reactions, identify \(D\)
\(\mathrm{CH}_3 \mathrm{COOH} \xrightarrow{\mathrm{SOCl}_2} A \xrightarrow[\text { Anhy. } \mathrm{AlCl}_3]{\text { Benzene }} B \xrightarrow{\mathrm{HCN}} C \xrightarrow{\mathrm{H}_2 \mathrm{O}} D\)

The correct order of boiling point in the following compounds is

Which of the following is an incorrect statement?

Bond enthalpies of \(A_2, B_2\) and \(A B\) are in the ratio \(2: 1: 2\). If bond enthalpy of formation of \(A B\) is \(-100 \mathrm{~kJ} \mathrm{~mol}^{-1}\). The bond enthalpy of \(B_2\) is

For the reaction,
\(A(g)+B(g) \rightleftharpoons C(g)+D(g) ; \Delta H=Q \mathrm{~kJ}\)
The equilibrium constant cannot be disturbed by

If the rate constant for a first order reaction is \(k\), the time \((t)\) required for the completion of \(99 \%\) of the reaction is given by

For a reaction, \(A+2 B \rightarrow\) Products, when concentration of \(B\) alone is increased half-life remains the same. If concentration of \(A\) alone is doubled, rate remains the same. The unit of rate constant for the reaction is

The rate of a gaseous reaction is given by the expression \(k[A][B]^2\). If the volume of vessel is reduced to one half of the initial volume, the reaction rate as compared to original rate is

Higher order \((>3)\) reactions are rare due to

The method by which aniline cannot be prepared is

\(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{Cl} \xrightarrow{\text { Alc. } \mathrm{NH}_3} A \xrightarrow{2 \mathrm{CH}_3 \mathrm{Cl}} B.\) The product \(B\) is

A hydrocarbon \(A\left(\mathrm{C}_4 \mathrm{H}_8\right)\) on reaction with \(\mathrm{HCl}\) gives a compound \(\mathrm{B}\left(\mathrm{C}_4 \mathrm{H}_9 \mathrm{Cl}\right)\) which on reaction with \(1 \mathrm{~mol}\) of \(\mathrm{NH}_3\) gi...

The compound A (major product) is

The correct order for wavelengths of light absorbed in the complex ions \(\left[\mathrm{CoCl}\left(\mathrm{NH}_3\right)_5\right]^{2+},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}\) and $$\left[\mathrm{Co}(\mathrm{CN})_6\right]^...

The IUPAC name of \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{CO}_3\right)\right] \mathrm{Cl}\) is

Homoleptic complexes among the following are
(A) \(\mathrm{K}_3\left[\mathrm{Al}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]\)
(B) \(\left[\mathrm{CoCl}_2(\mathrm{en})_2\right]^{+}\)
(C) $$\mathrm{K}_2\left[\mathrm{Zn}(\mathrm{OH})_4\rig...

For the crystal field splitting in octahedral complexes,

Which of the following pairs has both the ions coloured in aqueous solution? [Atomic numbers of
\(\mathrm{Sc}=21, \mathrm{Ti}=22, \mathrm{Ni}=28, \mathrm{Cu}=29, \mathrm{Mn}=25]\)

Which one of the following is correct for all elements from Sc to Cu?

Which of the following does not represent property stated against it?

\(\mathrm{H}_2(g)+2 \mathrm{AgCl}(s) \rightleftharpoons 2 \mathrm{Ag}(s)+2 \mathrm{HCl}(a q)\)
\(E_{\text {cell }}^{\circ}\) at \(25^{\circ} \mathrm{C}\) for the cell is \(0.22 \mathrm{~V}\). The equilibrium constant at $$25^{\circ} \mathrm...

Consider the following electrodes
$$\begin{aligned}
& P=\mathrm{Zn}^{2+}(0.0001 \mathrm{M}) / \mathrm{Zn}, Q=\mathrm{Zn}^{2+}(0.1 \mathrm{M}) / \mathrm{Zn} \\
& R=\mathrm{Zn}^{2+}(0.01 \mathrm{M}) / \mathrm{Zn}, S=\mathrm{Zn}^{2+}(0.001 \ma...

The resistance of \(0.01 \mathrm{~m} \mathrm{~KCl}\) solution at \(298 \mathrm{~K}\) is \(1500 \Omega\). If the conductivity of \(0.01 \mathrm{~m} \mathrm{~KCl}\) solution at \(298 \mathrm{~K}\) is $$0.1466 \times 10^{-3} \mathrm{~S} \mathr...

Arrange benzene, \(n\)-hexane and ethyne in decreasing order of their acidic behaviour.

Peroxide effect is observed with the addition of \(\mathrm{HBr}\) but not with the addition of HI to unsymmetrical alkene because

The order of reactivity of the compounds $$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{Br}, \mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}\left(\mathrm{C}_6 \mathrm{H}_5\right) \mathrm{Br}, \mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}\left(\mathrm{CH}_...

Permanent hardness cannot be removed by

\(K_a\) values for acids \(\mathrm{H}_2 \mathrm{SO}_3, \mathrm{HNO}_2, \mathrm{CH}_3 \mathrm{COOH}\) and \(\mathrm{HCN}\) are respectively \(13 \times 10^{-2}, 4 \times 10^{-4}, 1.8 \times 10^{-5}\) and \(4 \times 10^{-10}\), which of the a...

The correct IUPAC name of

The vapour pressure of pure liquids \(A\) and \(B\) are 450 and \(700 \mathrm{~mm}\) of \(\mathrm{Hg}\) at \(350 \mathrm{~K}\) respectively. If the total vapour pressure of the mixture is \(600 \mathrm{~mm}\) of \(\mathrm{Hg}\), the composi...

Henry's law constant for the solubility of \(\mathrm{N}_2\) gas in water at \(298 \mathrm{~K}\) is \(1.0 \times 10^5 \mathrm{~atm}\). The mole fraction of \(\mathrm{N}_2\) in air is 0.8 . The number of moles of \(\mathrm{N}_2\) from air dis...

Choose the correct statement.

The \(K_{\mathrm{H}}\) value (\(\mathrm{K}\) bar) of argon (I), carbondioxide (II), formaldehyde (III) and methane (IV) are respectively \(40.3,167, 1.83 \times 0^{-5}\) and 0.413 at \(298 \mathrm{~K}\). The increasing order of solubility o...

The number of six membered and five membered rings in Buckminster fullerene respectively is

Which of the following property is true for the given sequence?
\(\mathrm{NH}_3>\mathrm{PH}_3>\mathrm{AsH}_3>\mathrm{SbH}_3>\mathrm{BiH}_3 \text { ? }\)

In the detection of II group acid radical, the salt containing chloride is treated with concentrated sulphuric acid, the colourless gas is liberated. The name of the gas is

\(\mathrm{XeF}_6\) on partial hydrolysis gives a compound \(X\), which has square pyramidal geometry '\(X\)' is

A colourless, neutral, paramagnetic oxide of nitrogen '\(P\)' on oxidation gives reddish brown gas \(Q\). \(Q\) on cooling gives colourless gas \(R\). \(R\) on reaction with \(P\) gives blue solid \(S\). Identify \(P, Q, R, S\) respectively

Which of the following compound on heating gives \(\mathrm{N}_2 \mathrm{O}\) ?