MHT CET 2025 19th April Evening Shift | MHT CET Year Wise Previous Years Questions

MHT CET 2025 19th April Evening Shift

MCQ (Single Correct Answer)

-0

Find the mass of potassium chlorate required to liberate $5.6 \mathrm{dm}^3$ of oxygen gas at STP? (molar mass of $\mathrm{KClO}_3=122.5 \mathrm{~g} / \mathrm{mol}$ )

12.25 g

15.32 g

20.40 g

49.00 g

MHT CET 2025 19th April Evening Shift

MCQ (Single Correct Answer)

-0

Which of the following reactions exhibits decrease in entropy?

$2 \mathrm{H}_2 \mathrm{O}_{2(l)} \longrightarrow 2 \mathrm{H}_2 \mathrm{O}_{(l)}+\mathrm{O}_{2(\mathrm{~g})}$

$\mathrm{H}_{2(\mathrm{~g})} \longrightarrow 2 \mathrm{H}_{(\mathrm{g})}$

$\mathrm{CaCO}_{3(\mathrm{~s})} \xrightarrow{\Delta} \mathrm{CaO}_{(\mathrm{s})}+\mathrm{CO}_{2(\mathrm{~g})}$

$2 \mathrm{H}_{2(\mathrm{~g})}+\mathrm{O}_{2(\mathrm{~g})} \longrightarrow 2 \mathrm{H}_2 \mathrm{O}_{(\mathrm{l})}$

MHT CET 2025 19th April Evening Shift

MCQ (Single Correct Answer)

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What is the wavenumber of the photon emitted during transition from the orbit $\mathrm{n}=5$ to that of $\mathrm{n}=2$ in hydrogen atom? $\left[\mathrm{R}_{\mathrm{H}}=109677 \mathrm{~cm}^{-1}\right]$

$23032 \mathrm{~cm}^{-1}$

$46064 \mathrm{~cm}^{-1}$

$69096 \mathrm{~cm}^{-1}$

$92128 \mathrm{~cm}^{-1}$

MHT CET 2025 19th April Evening Shift

MCQ (Single Correct Answer)

-0

If pH of solution changes from 4 to 5 , then the $\mathrm{H}_3 \mathrm{O}^{+}$ion concentration of solution

decreases by one times

increase by one times

increase by 10 times

decrease by 10 times