1
TG EAPCET 2025 (Online) 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Consider the following pairs of elements and identify the pairs of elements which have nearly same atomic radius.

I. Y, La

II. Zr, Hf

III. Mo, W

IV. Cr, Mo

A

I and II

B

II and III

C

III and IV

D

I and III

2
TG EAPCET 2025 (Online) 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the sum of bond orders of $\mathrm{O}_2^{-}$and $\mathrm{O}_2^{2-}$ is $x$, then bond order of $\mathrm{O}_2^{2+}$ will be

A

$1.20 x$

B

$1.33 x$

C

$1.50 x$

D

$2.50 x$

3
TG EAPCET 2025 (Online) 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the molecule / ion in which the ratio of $\sigma$ to $\pi$-bonds is $3: 2$

A

$\mathrm{HCO}_3^{-}$

B

$\mathrm{CH}_2(\mathrm{CN})_2$

C

$\mathrm{HClO}_4$

D

$\mathrm{XeO}_3$

4
TG EAPCET 2025 (Online) 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

At 298 K , a flask ' $A$ ' of unknown volume $(V)$ contains oxygen at 5 atm . Another flask ' $B$ ' of volume 2 L contains helium at 3 atm . Two flasks are connected together by a small tube of zero volume. After the two gases are completely mixed, if the resulting mixture is found to have the mole fraction of oxygen as 0.2 , the volume of flask ' $A$ ' (in L ) is

(Assume oxygen and helium as ideal gases)

A

0.1

B

0.3

C

0.2

D

0.4

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