1
JEE Main 2024 (Online) 4th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

For a strong electrolyte, a plot of molar conductivity against (concentration) $${ }^{1 / 2}$$ is a straight line, with a negative slope, the correct unit for the slope is

A
$$\mathrm{S} \mathrm{cm}^2 \mathrm{~mol}^{-3 / 2} \mathrm{~L}$$
B
$$\mathrm{S} \mathrm{cm}{ }^2 \mathrm{~mol}^{-3 / 2} \mathrm{~L}^{-1 / 2}$$
C
$$\mathrm{S} \mathrm{cm}{ }^2 \mathrm{~mol}^{-1} \mathrm{~L}^{1 / 2}$$
D
$$\mathrm{S} \mathrm{cm}^2 \mathrm{~mol}^{-3 / 2} \mathrm{~L}^{1 / 2}$$
2
JEE Main 2024 (Online) 4th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

When $$\mathrm{MnO}_2$$ and $$\mathrm{H}_2 \mathrm{SO}_4$$ is added to a salt $$(\mathrm{A})$$, the greenish yellow gas liberated as salt (A) is :

A
$$\mathrm{NH}_4 \mathrm{Cl}$$
B
$$\mathrm{CaI}_2$$
C
$$\mathrm{KNO}_3$$
D
$$\mathrm{NaBr}$$
3
JEE Main 2024 (Online) 4th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct statement/s about Hydrogen bonding is/are

A. Hydrogen bonding exists when H is covalently bonded to the highly electro negative atom.

B. Intermolecular H bonding is present in $$o$$-nitro phenol

C. Intramolecular $$\mathrm{H}$$ bonding is present in HF.

D. The magnitude of $$\mathrm{H}$$ bonding depends on the physical state of the compound.

E. H-bonding has powerful effect on the structure and properties of compounds

Choose the correct answer from the options given below:

A
A, B, C only
B
A only
C
A, D, E only
D
A, B, D only
4
JEE Main 2024 (Online) 4th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Choose the Incorrect Statement about Dalton's Atomic Theory

A
Compounds are formed when atoms of different elements combine in any ratio.
B
Matter consists of indivisible atoms.
C
chemical reactions involve reorganization of atoms
D
All the atoms of a given element have identical properties including identical mass.
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