1
KCET 2025
MCQ (Single Correct Answer)
+1
-0

The number of orbitals associated with ' N ' shell of an atom is

A
16
B
32
C
3
D
4
2
KCET 2025
MCQ (Single Correct Answer)
+1
-0

According to the Heisenberg's Uncertainty principle, the value of $\Delta \mathrm{b} . \Delta \mathrm{x}$ for an object whose mass is $10^{-6} \mathrm{~kg}$ is $\left(\mathrm{h}=6.626 \times 10^{-34} \mathrm{Js}\right)$

A
$3.0 \times 10^{-24} \mathrm{~m}^{-2} \mathrm{~s}^{-1}$
B
$4.0 \times 10^{-26} \mathrm{~m}^{-2} \mathrm{~s}^{-1}$
C
$3.5 \times 10^{-25} \mathrm{~m}^{-2} \mathrm{~s}^{-1}$
D
$5.2 \times 10^{-29} \mathrm{~m}^{-2} \mathrm{~s}^{-1}$
3
KCET 2025
MCQ (Single Correct Answer)
+1
-0

Given below are two statements.

Statement-I : Adiabatic work done is positive when work is done on the system and internal energy of the system increases.

Statement - II : No work is done during free expansion of an ideal gas.

In the light of the above statements, choose the correct answer from the options given below.

A
Both statements - I and Statement - II are false
B
Statement - I is true but statement - II is false
C
Statement - I is false but statement - II is true
D
Both statements - I and Statement - II are true.
4
KCET 2025
MCQ (Single Correct Answer)
+1
-0

Which one of the following reactions has $\Delta \mathrm{H}=\Delta \mathrm{U}$ ?

A
$\mathrm{CaCO}_3(\mathrm{~s}) \xrightarrow{\Delta} \mathrm{CaO}(\mathrm{s})+\mathrm{CO}_2(\mathrm{~g})$
B
$\mathrm{C}_6 \mathrm{H}_6(\mathrm{I})+\frac{15}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow 6 \mathrm{CO}_2(\mathrm{~g})+3 \mathrm{H}_2 \mathrm{O}(\mathrm{I})$
C
$2 \mathrm{HI}(\mathrm{g}) \rightleftharpoons \mathrm{H}_2(\mathrm{~g})+\mathrm{I}_2(\mathrm{~g})$
D
$\mathrm{N}_2(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NH}_3(\mathrm{~g})$
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