MHT CET (PCB) 2024 22th April Evening Shift

Which of the following is a tertiary allylic alcohol?

Identify functional group from following that forms pink colour when schiffs reagent is added in it.

Identify the product formed in the following reaction.
\(\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_2-\mathrm{CHO} \xrightarrow[\text { ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {i) } \mathrm{LiAlH}_4} \text { product }\)

What is the radius of first orbit of monopositive helium ion?

What is the representation of element ( X ) having mass number 40 containing 22 neutrons.

Which from following amino acids contains sulfur in it's side chain?

Which carbon atoms of glucose in open chain structure numbered from $\mathrm{C}-1$ to $\mathrm{C}-6$ are NOT chiral?

Which of the following is NOT an example of diamagnetic substance?

Identify a molecule having octahedral geometry as per VSEPR theory.

What is the order of a reaction having unit of the rate constant $\mathrm{mol} \mathrm{dm}^{-3} \mathrm{~s}^{-1}$ ?

What is rate constant of a first order reaction having half life 138.6 minute?

For the reaction,
\(3 \mathrm{I}_{(\mathrm{aq})}^{-}+\mathrm{S}_2 \mathrm{O}_{8(\mathrm{aq})}^{2-} \longrightarrow 2 \mathrm{SO}_{4(\mathrm{aq})}^{2-}+\mathrm{I}_{3(\mathrm{aq})}^{-}\)
rate of formation of $\mathrm{SO}_{4(\text { aq })}^{...

Which of the following has the highest basic strength?

Identify the product ' B ' in the following sequence of reactions.
Ethanenitrile $\xrightarrow{\mathrm{SnCl}_2, \mathrm{HCl}} \mathrm{A} \xrightarrow{\mathrm{H}_3 \mathrm{O}^{+}} \mathrm{B}+\mathrm{NH}_4 \mathrm{Cl}$

Identify anionic complex from following.

Identify a ligand having two donor atoms and uses pairs of electrons on both donor atoms.

Identify false statement about zinc.

Which from following metal ions in their respective oxidation states forms colourless compounds?

Which of the following substances is NOT required in the construction of $\mathrm{H}_2-\mathrm{O}_2$ fuel cell?

The molar conductivity of 0.02 M HCl is $408.4 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ at $25^{\circ} \mathrm{C}$. Calculate it's conductivity.

Which of the following solvents is safe to use and considered as green solvent?

Alkyl chlorides on heating with metal fluorides form alkyl fluorides. This reaction is known as

Which of the following compounds has highest boiling point?

Identify the correct increasing order of boiling point of following compounds.

Identify the major product formed when 2-chlorobutane is boiled with concentrated alcoholic KOH .

The dissociation constant of weak monoacidic base is $1.8 \times 10^{-5}$. Calculate the degree of dissociation in 0.02 M solution.

Which from the following buffers is used for precipitation of cations of IIIA group in qualitative analysis?

Calculate the pH of buffer solution containing 0.12 M weak acid and 0.48 M of its salt with strong base if $\mathrm{pK}_{\mathrm{a}}$ is 3.82 .

Identify a pair of compounds that exhibits functional group isomerism from following.

How many isomers of $\mathrm{C}_4 \mathrm{H}_{11} \mathrm{~N}$ are tertiary amines?

Identify IUPAC name of the following compound.

\(\text { What is IUPAC name of following compound? }\)

What is the expected value of $\Delta T_f$ for 0.2 m aqueous $\mathrm{CaCl}_2$ solution if $\Delta \mathrm{T}_{\mathrm{f}}$ for 0.2 m sucrose solution is $x \mathrm{~K}$ ?

Calculate $\Delta \mathrm{T}_{\mathrm{b}}$ of 0.02 m solution if molal elevation constant for solvent is $0.52 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$.

Calculate the mass of solute dissolved in $1 \mathrm{dm}^3$ water has osmotic pressure 3.0 atm at 300 K [Molar mass of solute $=41 \mathrm{~g} \mathrm{~mol}^{-1}$, $\mathrm{R}=0.082 \mathrm{dm}^3 \mathrm{~atm} \mathrm{~K} \mathrm{~K}^{-1} \...

Identify the element having highest value of first ionization enthalpy.

If four different elements $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and D having outer electronic configuration as,
$$ \mathrm{A}=3 \mathrm{~s}^2 3 \mathrm{p}^4, \mathrm{~B}=3 \mathrm{~s}^2 3 \mathrm{p}^5, \mathrm{C}=4 \mathrm{~s}^2 4 \mathrm{p...

Which from the following statements about nylon 2-nylon 6 is NOT correct?

Which from following polymers is obtained by addition polymerisation method?

Identify oxidant in following reaction.
\(3 \mathrm{H}_3 \mathrm{AsO}_{3(\mathrm{aq})}+\mathrm{BrO}_{3(\mathrm{aq})}^{-} \longrightarrow \mathrm{Br}_{(\mathrm{aq})}^{-}+3 \mathrm{H}_3 \mathrm{AsO}_{4(\mathrm{aq})}\)

Calculate the number of moles of electrons required to convert $1.1 \mathrm{~mol} \mathrm{Cr}_2 \mathrm{O}_7^{2-}$ to $\mathrm{Cr}^{3+}$ in acidic medium.

Which alkali metal is used for heat transfer in nuclear power station?

Calculate the number of atoms in 0.4 gram of metal if it forms fcc structure.
\(\left[\rho \times \mathrm{a}^3=1.2 \times 10^{-22} \mathrm{~g}\right]\)

Calculate the volume of bcc unit cell if the radius of an atom in it is 216.5 pm .

What is the percentage by mass of oxygen in water, if percentage by mass of hydrogen is $11.1 \%$ ?

Find increase in temperature for a gas when first its pressure and then volume both are doubled at 400 K .

Which of the following statements is NOT true about lyophobic colloids?

One mole of a perfect gas expands isothermally and reversibly from $10 \mathrm{dm}^3$ to $20 \mathrm{dm}^3$ at 300 K . Find $\Delta \mathrm{U}, \mathrm{q}$ and work done respectively in the process. $\left(\mathrm{R}=8.3 \times 10^{-3} \mat...

Which of the following symbols represents heat of reaction at constant pressure?

Calculate heat of formation of $\mathrm{SO}_2$ from following equations.
$$ \begin{aligned} & \mathrm{S}+\frac{3}{2} \mathrm{O}_2 \longrightarrow \mathrm{SO}_3, \Delta \mathrm{H}=-2 \mathrm{xkJ} \\ & \mathrm{SO}_2+\frac{1}{2} \mathrm{O}_2 \...