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

Which of the following is a least stable carbocation?

A

$\mathrm{CH}_3-\stackrel{\oplus}{\mathrm{C}} \mathrm{H}_2$

B

$\mathrm{CH}_2=\stackrel{\oplus}{\mathrm{C}} \mathrm{H}$

C

$$ \mathrm{CH}_2=\mathrm{CH}\stackrel{\oplus}{-} \mathrm{CH}_2 $$

D

$\mathrm{C}_6 \mathrm{H}_5-\stackrel{\oplus}{\mathrm{C}} \mathrm{H}_2$

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

The incorrect statement about crystals with schottky defect is

A

it is due to missing of equal number of cations and anions from lattice points.

B

on the whole crystal is electrically neutral.

C

it is shown by ionic compounds in which cation and anion are of almost same size.

D

density of the crystal increases.

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

Two liquids ' $A$ ' and ' $B$ ' form an ideal solution. At 300 K , the vapour pressure of a solution containing 1 mole of ' $A$ ' and 3 moles of ' $B$ ' is 550 mm Hg . At the same temperature, if one more mole of ' $B$ ' is added to the solution, the vapour pressure of solution increases to 560 mm Hg . Then the ratio of vapour pressures of $A$ and $B$ in their pure state is

A

$1: 3$

B

$3: 1$

C

$2: 3$

D

$3: 2$

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

The mole conductivity of acetic acid solution at infinite dilution is $390 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$. What is the molar conductivity of 0.01 M acetic acid solution (in $\mathrm{S} \mathrm{cm}^2 \mathrm{~mol}^{-1}$ )?

(Given $K_a\left(\mathrm{CH}_3 \mathrm{COOH}\right)=1.8 \times 10^{-5}$, assume $1-\alpha=1$ )

A

10.64

B

16.54

C

51.64

D

15.64

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