1
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Consider the following.

I. The electron spin quantum number describes the orientation of the spin of the nucleus with respect to the magnetic field.

II. The orbitals represented by the quantum numbers $n=3, l=2, m=+2$ and $n=3, l=2, m=-2$ have the same energy.

III. The energy of a photon is directly proportional to wavelength but inversely proportional to wave number.

IV. Lyman series of lines appear in ultra-violet region.

The correct statements are

A
II and IV only
B
I and II only
C
II, III and IV only
D
I, III and IV only
2
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In which of the following options, the elements are correctly arranged with respect to their negative electron gain enthalpies?

A
$\mathrm{P}>\mathrm{S}>\mathrm{Cl}>\mathrm{F}$
B
$\mathrm{S}>\mathrm{P}>\mathrm{F}>\mathrm{Cl}$
C
$\mathrm{Cl}>\mathrm{F}>\mathrm{S}>\mathrm{P}$
D
$\mathrm{F}>\mathrm{Cl}>\mathrm{P}>\mathrm{S}$
3
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the option in which the molecules are arranged in the correct order of their dipole moments

A
$\mathrm{CO}_2<\mathrm{H}_2 \mathrm{O}<\mathrm{H}_2 \mathrm{~S}$
B
$\mathrm{HF}<\mathrm{HCl}<\mathrm{HBr}$
C
$\mathrm{BF}_3<\mathrm{NF}_3<\mathrm{NH}_3$
D
$\mathrm{CH}_4<\mathrm{CHCl}_3<\mathrm{CCl}_4$
4
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The bond order of $\mathrm{O}_2^{+}$is $x$. The bond orders of $\mathrm{O}_2^{-}$and $\mathrm{O}_2^{2+}$ are respectively

A
$\frac{5}{3} x, \frac{5}{6} x$
B
$\frac{3}{5} x, \frac{6}{5} x$
C
$\frac{2}{5} x, \frac{3}{5} x$
D
$\frac{5}{2} x, \frac{5}{3} x$
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