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1
MHT CET 2025 19th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the correct molecular formula of 'Oleum' from following.

A
$ \mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_3$
B
$ \mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_7$
C
$\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_5$
D
$\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_8$
2
MHT CET 2025 19th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following statements is correct about $\mathrm{O}_2$ and $\mathrm{O}_3$ molecule?

A
$\quad \mathrm{O}_2$ and $\mathrm{O}_3$ are paramagnetic
B
The enthalpy change during the formation of $\mathrm{O}_3$ from $\mathrm{O}_2$ is positive
C
The entropy change in the formation of $\mathrm{O}_3$ from $\mathrm{O}_2$ is positive
D
$\mathrm{O}_3$ is more stable than $\mathrm{O}_2$
3
MHT CET 2025 19th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Identify the correct order of thermal stability of hydrides of 16 group elements from the following.
A
$\mathrm{H}_2 \mathrm{~S}<\mathrm{H}_2 \mathrm{O}<\mathrm{H}_2 \mathrm{Se}<\mathrm{H}_2 \mathrm{Te}$
B
$\mathrm{H}_2 \mathrm{O}<\mathrm{H}_2 \mathrm{~S}<\mathrm{H}_2 \mathrm{Se}<\mathrm{H}_2 \mathrm{Te}$
C
$\mathrm{H}_2 \mathrm{Te}<\mathrm{H}_2 \mathrm{Se}<\mathrm{H}_2 \mathrm{~S}<\mathrm{H}_2 \mathrm{O}$
D
$\mathrm{H}_2 \mathrm{Se}<\mathrm{H}_2 \mathrm{Te}<\mathrm{H}_2 \mathrm{O}<\mathrm{H}_2 \mathrm{~S}$
4
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which group element from following achieves noble gas configuration after gaining two electrons?

A
Group-14
B
Group-15
C
Group-16
D
Group-13
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