JEE Main Structure of Atom Practice Questions With Solutions

Boost Your Prep with Free Practice Questions!

JEE Main Structure of Atom Practice Questions with Solutions

The structure of atom is an integral part of Physics that explains the nature, composition, and functions of an atom. The JEE Main Structure of Atom Practice Test is a set of questions and answers from this chapter, recommended for students to practice as a part of the JEE Main exam preparation. The JEE Main Structure of Atom Practice Questions with Solutions consist of a lot of questions from the structure of atom and their solutions for the understanding of students. It is advised for students to solve at least 1 to 2 practice tests from this chapter every month to review their preparation for this chapter. There will be multiple-choice, numerical, and assertion-reason type questions format in the JEE Main entrance exam’s question paper. Students may expect around 2 to 3 questions from the structure of atom chapter in the Physics section of the JEE Main entrance exam.

The important topics from the structure of atom for the JEE Main exam are Atomic Models (Thompson’s model, Rutherford’s model, and Bohr’s model), Atomic Spectra, Dual Nature of Matter & Radiation, Quantum Numbers, and Radioactivity. Questions from all these important topics of the structure of atom will be available in the JEE Main Structure of Atom Practice Questions with Solutions, along with their solutions. There will be around 15 to 20 questions overall from these topics. JEE Main aspirants are encouraged to attempt these practice tests within a time limit, to assess their preparation for the subject. Regularly practicing these tests will help students to strengthen their knowledge of the structure of atom chapter and understand all the basic concepts well. It will also help students to improve their accuracy while answering questions from this topic and solve question fast, to manage time better during the examination.

JEE Main Chemistry Structure of Atom Practice Questions

Mathematics Physics

Question 1.

The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency ' $A$ ' $\times 10^{12}$ hertz and that has a radiant intensity in that direction of $\frac{1}{^{'} B^{'}}$ , watt per steradian.' $A$ ' and ' $B$ ' are respectively

450 and 683

540 and

\frac{1}{683}

540 and 683

450 and

\frac{1}{683}

Question 2.

Compare the energies of following sets of quantum numbers for multielectron system.

(A) $n = 4, 1 = 1$

(B) $n = 4, 1 = 2$

(D) $n = 3, 1 = 2$

(E) $n = 4, 1 = 0$

Choose the correct answer from the options given below :

(E) > (C) > (A) > (D) > (B)

(B) > (A) > (C) > (E) > (D)

(C) < (E) < (D) < (A) < (B)

(E) < (C) < (D) < (A) < (B)

Question 3.

Match List I with List II.

	LIST I Alkali Metal		LIST II Emission Wavelength in nm
A.	Li	I.	589.2
B.	Na	II.	455.5
C.	Rb	III.	670.8
D.	Cs	IV.	780.0

Choose the correct answer from the options given below :

(A)-(II), (B)-(IV), (C)-(III), (D)-(I)

(A)-(III), (B)-(I), (C)-(IV), (D)-(II)

(A)-(I), (B)-(IV), (C)-(III), (D)-(II)

(A)-(IV), (B)-(II), (C)-(I), (D)-(III)

Question 4.

The incorrect postulates of the Dalton's atomic theory are :

(A) Atoms of different elements differ in mass.

(B) Matter consists of divisible atoms.

(D) All the atoms of given element have different properties including mass.

(E) Chemical reactions involve reorganisation of atoms.

Choose the correct answer from the options given below :

(B), (D) only

(A), (B), (D) only

(B), (D), (E) only

(C), (D), (E) only

Question 5.

Choose the Incorrect Statement about Dalton's Atomic Theory

Compounds are formed when atoms of different elements combine in any ratio.

Matter consists of indivisible atoms.

chemical reactions involve reorganization of atoms

All the atoms of a given element have identical properties including identical mass.

Question 6.

The number of radial node/s for

3 p

orbital is :

Question 7.

In case of isoelectronic species the size of

F^{-}, Ne

and

{Na}^{+}

is affected by :

Nuclear charge

(z)

None of the factors because their size is the same

Electron-electron interaction in the outer orbitals

Principal quantum number (n)

Question 8.

According to the wave-particle duality of matter by de-Broglie, which of the following graph plot presents most appropriate relationship between wavelength of electron

(λ)

and momentum of electron

(p)

JEE Main 2024 (Online) 1st February Morning Shift Chemistry - Structure of Atom Question 22 English Option 1

JEE Main 2024 (Online) 1st February Morning Shift Chemistry - Structure of Atom Question 22 English Option 2

JEE Main 2024 (Online) 1st February Morning Shift Chemistry - Structure of Atom Question 22 English Option 3

JEE Main 2024 (Online) 1st February Morning Shift Chemistry - Structure of Atom Question 22 English Option 4

Question 9.

The four quantum numbers for the electron in the outer most orbital of potassium (atomic no. 19) are

n = 3, l = 0, m = 1, s = + \frac{1}{2}

n = 4, l = 0, m = 0, s = + \frac{1}{2}

n = 2, l = 0, m = 0, s = + \frac{1}{2}

n = 4, l = 2, m = - 1, s = + \frac{1}{2}

Question 10.

Given below are two statements :

Statement (I) : The orbitals having same energy are called as degenerate orbitals.

Statement (II) : In hydrogen atom, 3p and 3d orbitals are not degenerate orbitals.

In the light of the above statements, choose the most appropriate answer from the options given below :

Statement I is true but Statement II is false

Statement I is false but Statement II is true

Both Statement I and Statement II are false

Both Statement I and Statement II are true