1
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the value of frequency of radiation when transition occurs between two stationary states that differ in energy by $$\Delta \mathrm{E}$$ ?

A
$$v=\frac{2 \pi}{h}$$
B
$$v=\frac{h}{\Delta E}$$
C
$$v=\frac{\Delta E}{h}$$
D
$$v=\frac{h}{2 \pi}$$
2
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is molar concentration of weak monobasic acid if dissociation constant is 5 $$\times$$ 10$$^{-8}$$ and undergoes 0.5% dissociation?

A
0.03 M
B
0.002 M
C
0.001 M
D
0.005 M
3
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A substance containing hydrogen and releasing H$$^+$$ in aqueous medium is acid. Identify theory suggesting this concept, from following.

A
Ostwald theory
B
Bronsted-Lowry theory
C
Arrhenius theory
D
Lewis theory
4
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the molar conductivity of $$0.05 \mathrm{M}$$ solution of sodium hydroxide, if it's conductivity is $$0.0118 \mathrm{~S} \mathrm{~cm}^{-1}$$ at $$298 \mathrm{~K}$$ ?

A
$$236 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
B
$$423 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
C
$$354 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
D
$$590 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
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