1
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The rate constant of a reaction is increased by 4 times after addition of catalyst to the reaction mixture at the same temperature of $27^{\circ} \mathrm{C}$. The change in the activation energy of this reaction is (Take $\ln (1 / 4)=-1386, R=8.314$ )

A

$-15 \mathrm{~kJ} / \mathrm{mol}$

B

$-1.5 \mathrm{~kJ} / \mathrm{mol}$

C

$-3.45 \mathrm{~kJ} / \mathrm{mol}$

D

$-34.5 \mathrm{~kJ} / \mathrm{mol}$

2
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

A cube of edge length 1 cm is divided into smaller cubes of uniform size of length 1 nm . Assuming that, no voids are present, the ratio of total surface area of all the cubes of 1 nm edge length to the surface area of the initial cube is

A

$10^9$

B

$10^7$

C

$10^6$

D

$10^5$

3
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the number of moles of NaOH required to completely neutralise 100 g of $118 \%$ oleum.

A

2.4

B

1.2

C

4.8

D

8.4

4
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

A certain mass of a gas was brought from state $A$ to $B$ by following three different paths, namely 1,2 and 3 , respectively. Which of the following relations is correct for the work done?

TS EAMCET 2022 (Online) 18th July Evening Shift Chemistry - Thermodynamics Question 14 English

A

$\mathrm{W}_1=\mathrm{W}_2=\mathrm{W}_3$

B

$W_1 < W_2 < W_3$

C

$W_1>W_2>W_3$

D

$W_1=W_3 < W_2$

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