KCET 2024

PCC is

8.8 g of monohydric alcohol added to ethyl magnesium iodide in ether liberates $2240 \mathrm{~cm}^3$ of ethane at STP. This monohydric alcohol when oxidised using pyridinium-chloro-chromate, forms a carbonyl compound that answers silver mir...

When a tertiary alcohol ' $A^{\prime}\left(\mathrm{C}_4 \mathrm{H}_{10} \mathrm{O}\right)$ reacts with $20 \% \mathrm{H}_3 \mathrm{PO}_4$ at 358 K , it gives a compound ' $B^{\prime}\left(\mathrm{C}_4 \mathrm{H}_8\right)$ as a major product...

The energy associated with first orbit of $\mathrm{He}^{+}$ is

The type of linkage present between nucleotides is

$\alpha-D-(+)$-glucose and $\beta-D-(+)$-glucose are

The female sex hormone which is responsible for the development of secondary female characteristics and participates in the control of menstrual cycle is

A pair of isoelectronic species having bond order of one is

For the reaction, $A \rightleftharpoons B, E_a=50 \mathrm{~kJ} \mathrm{~mol}^{-1}$ and $\Delta H=-20 \mathrm{~kJ} \mathrm{~mol}^{-1}$. When a catalyst is added $E_a$ decreases by $10 \mathrm{~kJ} \mathrm{~mol}^{-1}$. What is the $E_a$ for t...

Which one of the following does not represent Arrhenius equation?

For the reaction, $\mathrm{PCl}_5 \longrightarrow \mathrm{PCl}_3+\mathrm{Cl}_2$, rate and rate constant are $1.02 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$ and $3.4 \times 10^{-5} \mathrm{~s}^{-1}$ respectively at a gi...

Which one of the following is a cationic detergent?

The compound is

Biologically active adrenaline and ephedrine used to increase blood pressure contain

In the reaction,
Aniline $\xrightarrow[\text { Dil. } \mathrm{HCl}]{\mathrm{NaNO}_2} P \xrightarrow[\text { NaOH }]{\text { Phenol }} Q$

The complex compounds $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{SO}_4\right] \mathrm{Br}$ and $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Br}\right] \mathrm{SO}_4$ are

On treating 100 mL of 0.1 M aqueous solution of the complex $\mathrm{CrCl}_3 \cdot 6 \mathrm{H}_2 \mathrm{O}$ with excess of $\mathrm{AgNO}_3, 2.86 \mathrm{~g}$ of AgCl was obtained. The complex is

Which of the following statements are true about $\left[\mathrm{CoF}_6\right]^{3-}$ ion ?
I. The complex has octahedral geometry.
II. Coordination number of Co is 3 and oxidation state is +6 .
III. The complex is $s p^3 d^2$ hybridised.
IV....

MnO exhibits

Which of the following statements related to lanthanoids is incorrect?

Match the following.
I. $\mathrm{Zn}^{2+}\quad$ (i) $d^8$ configuration
II. $\mathrm{Cu}^{2+}\quad$ (ii) Colourless
III. $\mathrm{Ni}^{2+}\quad$
(iii) $\mu=1.73 \mathrm{BM}$

The transition element $(\approx 5 \%)$ present with lanthanoid metal in misch metal is

How many coulombs are required to oxidise 0.1 mole of $\mathrm{H}_2 \mathrm{O}$ to oxygen?

The value of ' $A$ ' in the equation $\lambda_{\mathrm{m}}=\lambda_{\mathrm{m}}^{\circ}-A \sqrt{C}$ is same for the pair

A current of 3 A is passed through a molten calcium salt for 1 hr 47 min 13 s . The mass of calcium deposited is
(Molar mass of $\mathrm{Ca}=40 \mathrm{~g} \mathrm{~mol}^{-1}$ )

Identify the incorrect statement from the following.

The first chlorinated organic insecticide prepared is

A haloalkane undergoes $\mathrm{S}_{\mathrm{N}} 2$ or $\mathrm{S}_{\mathrm{N}} 1$ reaction depending on

In the following scheme of reaction.

X, y and Z respectively are

Sodium ethanoate on heating with soda lime gives ' $X^{\prime}$. Electrolysis of aqueous solution of sodium ethanoate gives ' $Y^{\prime}$. ' $X^{\prime}$ and ' $Y^{\prime}$ respectively are

In the given sequence of reactions, identify ' $P^{\prime}, Q^{\prime}, R^{\prime}$ and ' $S$ respectively.

2-methyl propane can be prepared by Wurtz reaction. The haloalkanes taken along with metallic sodium and dry ether are :

But-1-yne on reaction with dil. $\mathrm{H}_2 \mathrm{SO}_4$ in presence of $\mathrm{Hg}^{2+}$ ions at 333 K gives

The correct decreasing order of boiling point of hydrogen halides is

Which one of the following properties is generally not applicable to ionic hydrides?

Solubility product of $\mathrm{CaC}_2 \mathrm{O}_4$ at a given temperature in pure water is $4 \times 10^{-9}\left(\mathrm{~mol} \mathrm{~L}^{-1}\right)^2$. Solubility of $\mathrm{CaC}_2 \mathrm{O}_4$ at the same temperature is

Propanone and propanal are

For which one of the following mixtures is composition uniform throughout?

Vapour pressure of a solution containing 18 g of glucose and 178.2 g of water at $100^{\circ} \mathrm{C}$ is
(Vapour pressure of pure water at $100^{\circ} \mathrm{C}=760$ torr)

Which one of the following pairs will show positive deviation from Raoult's law?

A mixture of phenol and aniline shows negative deviation from Raoult's law. This is due to the formation of

The incorrect statement about Hall -Heroult process is

Select the correct statement :

The synthetically produced radioactive noble gas by the collision of ${ }_{98}^{249} \mathrm{Cf}$ with ${ }_{20}^{48} \mathrm{Ca}$ is

Which of the following halides cannot be hydrolysed?

A metalloid is

$\mathrm{NO}_2$ gas is

The biodegradable polymer obtained by polymerisation of glycine and aminocaproic acid is

Which of the following set of polymers are used as fibre?
(i) Teflon
(ii) Starch
(iii) Terylene
(iv) Orlon

In the reaction between moist $\mathrm{SO}_2$ and acidified permanganate solution.