List of top Questions asked in MHT CET- 2025

For the cell involving following reaction.

\[ \mathrm{Zn}_{(\mathrm{s})}+\mathrm{Ni}_{(\mathrm{aq})}^{+2} \longrightarrow \mathrm{Zn}_{(\mathrm{aq})}^{+2}+\mathrm{Ni}_{(\mathrm{s})}, \mathrm{E}_{\mathrm{cell}}^*=0.5 \mathrm{~V} . \]

What is standard Gibb's energy change of cell reaction?

The rate constant is doubled when temperature increases from \(27^{\circ} \mathrm{C}\) to \(37^{\circ} \mathrm{C}\). What is activation energy in kJ ?

Calculate the molality of the solution containing nonvolatile solute if boiling point elevation of solution is 0.39 K .

[ \(\mathrm{K}_{\mathrm{b}}\) of water \(=0.52 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\) ]

Which of the following alkenes, on oxidation by \(\mathrm{KMnO}_4\) in dil. \(\mathrm{H}_2 \mathrm{SO}_4\) forms adipic acid?

\[ \begin{aligned} &\text { Identify ' } \mathrm{A} \text { ' in the following reaction. }\\ &\underset{\text { (excess) }}{\mathrm{A}}+\underset{\text { (excess) }}{\operatorname{Acetyl} \text { chloride }} \xrightarrow[\mathrm{AlCl}_3]{\text { Anhydrous }} \end{aligned} \]

2-Chloroacetophenone + 4-Chloroacetophenone

The vapour density of a certain gas is 16 . What is the volume occupied by 8 g of gas at STP assuming ideal behaviour?

Identify polyamide polymer from following.

If \(r=k[A]^2[B]\) is rate law equation for reaction \(\mathrm{A}+\mathrm{B} \rightarrow \mathrm{C}\), at \([\mathrm{A}]=1 \mathrm{M}\) and \([\mathrm{B}]=0.2 \mathrm{M}\), Calculate rate of reaction if rate constant is \(6.25 \mathrm{M}^{-2} \mathrm{~s}^{-1}\).

Which of the following is used in preparation of hydrogen peroxide by Merck process?

Identify the name of reaction if carbonyl group of aldehydes and ketones is reduced to methylene group on treatment with hydrazine followed by heating with sodium hydroxide in ethylene glycol.

For a reaction \(\mathrm{A} \rightarrow\) Product, rate constant is \(6.93 \times 10^{-3}\) hour \({ }^{-1}\). What is order of reaction?

What is the number of electrons in bonding molecular orbitals and antibonding molecular orbitals respectively in \(\mathrm{F}_2\) molecule?

Which of the following is likely to undergo racemization during alkaline hydrolysis by \(\mathrm{S}_{\mathrm{N}} 1\) mechanism?

Calculate the value of dissociation constant of weak acid, which dissociates to \(0.01 \%\) in its 0.1 M solution?

A solution of 5 g nonvolatile solute in 50 g water decreases its freezing point by 0.2 K . Calculate the molar mass of solute if \(\mathrm{K}_{\mathrm{f}}\) of water is \(1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\).

Identify the product ' B ' in the following reaction.

\[ \text { Sodium phenoxide } \xrightarrow[6 \,atm]{\mathrm{CO}_2, 398 \mathrm{~K}} \mathrm{~A} \xrightarrow{\mathrm{H}_3 \mathrm{O}^{+}} \mathrm{B} \]

Which of the following statements is NOT correct about ozone?

Which from following d-orbitals has different shape as compared with others?

Which lanthanoid from following has highest ionisation \(\left(\mathrm{IE}_1\right)\) enthalpy?

Which from following pairs of solutions in water exhibits same osmotic pressure at same temperature?

[molar mass of urea \(=60 \mathrm{~g} \mathrm{~mol}^{-1}\), sucrose \(=342 \mathrm{~g} \mathrm{~mol}^{-1}\) ]

Identify glycosidic linkage in maltose.

Calculate the work done in joule if 1 mole of ideal gas is compressed from \(25 \mathrm{dm}^3\) to \(13 \mathrm{dm}^3\) at constant external pressure 4 bar.

Calculate the edge length of unit cell if a metal with atomic radius 128 pm forming fcc unit cell structure.

Calculate percentage atom economy when 46 g ethanol is obtained from 64.5 g chloroethane and \(56 \mathrm{~g} \mathrm{KOH}_{(\mathrm{aq})}\).