MHT CET 2023 11th May Evening Shift | MHT CET Year Wise Previous Years Questions

What is the value of percent atom economy when an organic compound of formula weight $$75 \mathrm{~u}$$ is obtained from reactants having sum formula weight $$225 \mathrm{~u}$$ ?

13.5

33.3

40.4

70.5

MHT CET 2023 11th May Evening Shift

MCQ (Single Correct Answer)

-0

Calculate $$\Delta \mathrm{S}_{\text {total }}$$ for the following reaction at $$300 \mathrm{~K}$$.

$$\mathrm{NH}_4 \mathrm{NO}_{3(\mathrm{~s})} \longrightarrow \mathrm{NH}_{(\mathrm{aq})}^{+}+\mathrm{NO}_{3(\mathrm{aq})}^{-}$$

$$\left(\Delta \mathrm{H}=28.1 \mathrm{~kJ} \mathrm{~mol}^{-1}, \Delta \mathrm{S}_{\mathrm{sys}}=108.7 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right)$$

$$15.1 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$$

$$93.6 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$$

$$84.3 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$$

$$202.3 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$$

MHT CET 2023 11th May Evening Shift

MCQ (Single Correct Answer)

-0

Which from following properties is NOT exhibited by LDP?

It is crystalline.

It is moisture resistant.

LDP films are extremely flexible.

It is poor conductor of electricity.