1
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

The rate of a reaction quadruples when temperature changes from $$27^{\circ} \mathrm{C}$$ to $$57^{\circ} \mathrm{C}$$. Calculate the energy of activation.

Given $$\mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}, \log 4=0.6021$$

A
$$38.04 \mathrm{~kJ} / \mathrm{mol}$$
B
$$380.4 \mathrm{~kJ} / \mathrm{mol}$$
C
$$3.80 \mathrm{~kJ} / \mathrm{mol}$$
D
$$3804 \mathrm{~kJ} / \mathrm{mol}$$
2
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of $$\mathrm{Fe}^{2+}$$ ion?

A
dilute hydrochloric acid
B
concentrated sulphuric acid
C
dilute nitric acid
D
dilute sulphuric acid
3
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

Major products A and B formed in the following reaction sequence, are

NEET 2024 Chemistry - Alcohol, Phenols and Ethers Question 4 English

A
NEET 2024 Chemistry - Alcohol, Phenols and Ethers Question 4 English Option 1
B
NEET 2024 Chemistry - Alcohol, Phenols and Ethers Question 4 English Option 2
C
NEET 2024 Chemistry - Alcohol, Phenols and Ethers Question 4 English Option 3
D
NEET 2024 Chemistry - Alcohol, Phenols and Ethers Question 4 English Option 4
4
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

The plot of osmotic pressure (П) vs concentration $$(\mathrm{mol} \mathrm{~L}^{-1})$$ for a solution gives a straight line with slope $$25.73 \mathrm{~L} \mathrm{~bar} \mathrm{~mol}^{-1}$$. The temperature at which the osmotic pressure measurement is done is

(Use $$\mathrm{R}=0.083 \mathrm{~L} \mathrm{~bar} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}$$)

A
$$37^{\circ} \mathrm{C}$$
B
$$310^{\circ} \mathrm{C}$$
C
$$25.73^{\circ} \mathrm{C}$$
D
$$12.05^{\circ} \mathrm{C}$$
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