MHT CET 2021 23rd September Evening Shift | MHT CET Year Wise Previous Years Questions

What is the constant external pressure of an ideal gas when expanded from $$2 \times 10^{-2} \mathrm{~m}^3$$ to $$3 \times 10^{-2} \mathrm{~m}^3$$, if the work done by the gas is $$-5.09 \mathrm{~kJ}$$ ?

$$5.09 \times 10^5 \mathrm{Nm}^{-2}$$

$$1.01 \times 10^5 \mathrm{Nm}^{-2}$$

$$2.02 \times 10^5 \mathrm{Nm}^{-2}$$

$$5.60 \times 10^5 \mathrm{Nm}^{-2}$$

MHT CET 2021 23rd September Evening Shift

MCQ (Single Correct Answer)

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The conductivity of $$0.012 \mathrm{~M} \mathrm{~NaBr}$$ solution is $$2.67 \times 10^{-4} \mathrm{~S} \mathrm{~cm}^{-1}$$. What is it's molar conductivity?

$$26.7 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$

$$32.04 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$

$$12.2 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$

$$22.2 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$

MHT CET 2021 23rd September Evening Shift

MCQ (Single Correct Answer)

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How many molecules of ammonia gas are present in 67.2 dm$$^3$$, measured at S.T.P.?

$$2.0\times10^{24}$$

$$1.0\times10^{23}$$

$$1.8\times10^{22}$$

$$5.0\times10^{24}$$