MHT CET (PCB) 2025 9th April Evening Shift

Which of the following is a pair of dihydric phenols?

Which of the following is tertiary benzylic alcohol?

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

Calculate the energy associated with second orbit of $\mathrm{He}^{+}$.

Which of the following cations is involved in formation of chlorophyll molecule in plants?

Which from following is essential amino acid?

Which from following tests for glucose confirms presence of carbonyl group?

Identify product ' B ' in the following reaction.
\(\text { Cumene } \xrightarrow[\Delta]{\mathrm{KMnO}_4, \mathrm{KOH}} \mathrm{~A} \xrightarrow{\mathrm{H}_3 \mathrm{O}^{+}} \mathrm{B}\)

Identify the products of following reaction.
\(\mathrm{C}_6 \mathrm{H}_5 \mathrm{COOC}_2 \mathrm{H}_5 \xrightarrow[\text { dil H}_2 \mathrm{SO}_4]{\Delta} \text { Products }\)

Identify product ' $X$ ' obtained in the following reaction.
\(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}+\mathrm{CH}_3 \mathrm{COOAg} \xrightarrow{\Delta} \mathrm{X}+\mathrm{AgBr}\)

Identify the product ' X ' in following reaction.
Ethanoyl chloride $\xrightarrow{\mathrm{H}_2 \mathrm{O}} X$

What type of hybridisation is found in $\mathrm{H}_2 \mathrm{Se}$ ?

Identify the compound having highest value of bond angle from following.

Find the rate of disappearance of $B$ for the reaction $2 \mathrm{~A}+\mathrm{B} \longrightarrow 2 \mathrm{C}+\mathrm{D}$, from following.

For the reaction
\(\mathrm{N}_{2(\mathrm{~g})}+3 \mathrm{H}_{2(\mathrm{~g})} \longrightarrow 2 \mathrm{NH}_{3(\mathrm{~g})}\)
$\mathrm{N}_{2(\mathrm{~g})}$ disappears at the rate of $2 \times 10^{-4} \mathrm{~mol} \mathrm{dm}^{-3} \mathrm...

Half life of a first order reaction is 3 hours. Calculate the value of $\frac{[\mathrm{A}]_0}{[\mathrm{~A}]_{\mathrm{t}}}$ after 8 hours.

Which from following compounds is called Gammexane?

Which from following compounds is used as analgesics?

Which from following reagents is NOT involved in Sandmeyer reaction?

Which among the following compounds has highest boiling point?

Identify the correct decreasing order of stability of complexes formed by divalent metal ions with same ligand.

What is the total number of donor atoms present in Bis(ethylenediamine)dithiocyanatoplatinum (IV)?

Identify the element so that the last electron enters in ( $n-2$ )f sub shell.

What is the number of unpaired electrons in $\mathrm{C}_0$ in +2 state?

Which of the following species acts as an oxidising agent during working of hydrogenoxygen fuel cell?

What is the amount of 'Al' deposited at cathode during electrolysis of aqueous $\mathrm{AlCl}_3$ by passing 1 faraday electricity?

If for the cell reaction,
\(\mathrm{A}_{(\mathrm{s})}+\mathrm{B}_{(\mathrm{aq})}^{+} \longrightarrow \mathrm{A}_{(\mathrm{aq})}^{+}+\mathrm{B}_{(\mathrm{s})}\)
if $\mathrm{E}_{\text {cell }}^{\circ}=0.0592 \mathrm{~V}$. What is equilibriu...

Identify the major product obtained in the reaction of chlorobenzene with chlorine in presence of anhydrous $\mathrm{FeCl}_3$.

Which among the following is NOT benzylic halide?

Identify the order of reactivity of halogens towards alkanes.

What is the total number of moles of ' C ' atoms and ' H ' atoms respectively present in n mole molecule represented by following structure?

What is the value of $\mathrm{pK}_{\mathrm{a}}$ if $0.1 \mathrm{M} \mathrm{CH}_3 \mathrm{COONa}$ and $0.01 \mathrm{M} \mathrm{CH}_3 \mathrm{COOH}$ are mixed to form buffer solution having pH 4.50 ?

The solubility of sparingly soluble, salt $\mathrm{AX}_2$ is $1.5 \times 10^{-3} \mathrm{~mol} \mathrm{dm}^{-3}$. What is its solubility product?

Solubility of $\mathrm{Mg}(\mathrm{OH})_2$ is ' S ' $\mathrm{mol} / \mathrm{dm}^3$ its solubility product is equal to

Calculate the osmotic pressure of 0.01 M aqueous solution of non electrolyte at 300 K .
\(\left[\mathrm{R}=0.0821 \mathrm{~atm} \mathrm{dm}^3 \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right]\)

Which from following units of concentrations of solutions is temperature independent?

Calculate cryoscopic constant of solvent if 2 g solute having molar mass $80 \mathrm{~g} \mathrm{~mol}^{-1}$ dissolved in 75 g solvent decreases its freezing point by 0.4 K .

Identify thermoplastic polymer from following.

Identify the monomers used to prepare polycarbonate.

What is the average oxidation number of carbon in carbon suboxide $\mathrm{C}_3 \mathrm{O}_2$ ?

What is change in oxidation number of ' Mn ' during the decolourisation of acidified potassium permanganate by moist sulfur dioxide?

What is the percent void volume in hcp lattice?

Calculate the number of unit cells present in 0.6 g metal if the product of density and unit cell volume is $3.6 \times 10^{-22} \mathrm{~g}$.

Find the total number of tetrahedral voids formed in 0.5 mole of a compound forming hcp structure.

Which from following quantity of different gases contains maximum number of molecules?

Which from following conditions defines the critical temperature of a gas is the temperature

Identify positively charged sol from following.

Which from following reactions performs highest + ve work at $25^{\circ} \mathrm{C}$ ?

Calculate standard Gibbs energy for a certain reaction if $\Delta \mathrm{H}^{\circ}$ and $\Delta \mathrm{S}^{\circ}$ respectively are $219 \mathrm{~kJ} \mathrm{~mol}^{-1}$ and $-20 \mathrm{JK}^{-1}$.

Calculate the change in internal energy of the system if 15 kJ of work done on the surrounding and system releases 10 kJ of heat in a particular reaction.