JEE Main Atomic Structure Questions

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JEE Main Atomic Structure Questions. We covered all the JEE Main Atomic Structure Questions in this post for free so that you can practice well for the exam.

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Mock Test on Atomic Structure for Students

Which one of the following has the highest frequency?

(a) Cosmic rays

(b) X-rays

(c) Radiowaves

(d) Microwaves

Option a – Cosmic rays

Which one of the following types of radiations has the smallest wavelength?

(a) Microwaves

(b) Infra-red

(c) Visible light

(d) X-rays

Option d – X-rays

Which one of the following pairs of rays is electromagnetic in nature?

(a) Beta rays and gamma rays

(b) Cathode rays and X-rays

(c) Alpha rays and beta rays

(d) X-rays and gamma rays

Option d – X-rays and gamma rays

Which of the following has the least penetrating power?

(a) Alpha particles

(b) Beta particles

(c) Gamma rays

(d) All have the same penetrating power

Option a – Alpha particles

When X-rays are produced

(a) heat is generated at the target.

(b) heat is absorbed in the target.

(c) the temperature of the target remains constant.

(d) brilliant light is seen at the target.

Option a – heat is generated at the target

What is the correct ascending order for frequencies of the following radiations? I. Visible II. X-rays III. Ultraviolet IV. Radio waves Codes

(a) I, III, II, IV

(b) III, II, IV, I

(c) IV, I, III, II

(d) IV, III, I, II

Option c – IV, I, III, II

The number of maximum electrons in the N shell is

(a) 2

(b) 8

(c) 18

(d) 32

Option d – 32

An atom has 7 electrons in its M-shell and contains 18 neutrons in its nucleus. What is its mass number?

(a) 25

(b) 27

(c) 35

(d) 43

Option c – 35

The number of angular and radial nodes for 4d orbital is respectively

(a) 2 and 1

(b) 1 and 2

(c) 3 and 1

(d) 4 and 0

Option a – 2 and 1

Two electrons in an orbital are differentiated by which of the following?

(a) Magnetic quantum number

(b) Spin quantum number

(c) Principal quantum number

(d) Azimuthal quantum number

Option b – Spin quantum number

Radioactivity was discovered by

(a) Rutherford

(b) Becquerel

(c) Bohr

(d) Madam Curie

Option b – Becquerel

Radioactivity is measured by

(a) a Hydrometer

(b) Geiger Counter

(c) a Seismometer

(d) Ammeter

Option b – Geiger Counter

Which one of the following is not radioactive?

(a) Astatine

(b) Francium

(c) Tritium

(d) Zirconium

Option d – Zirconium

Regarding the atom of a chemical element, the magnetic quantum number refers to

(a) orientation

(b) shape

(c) size

(d) spin

Option a – orientation

Which of the following element has one or two electrons in the K-shell only?

(a) Hydrogen

(b) Helium

(c) Neon

(d) Sulphur

Option b – Helium

The molecules of different compounds in which the total number of atoms and electrons are the same are called

(a) Isobars

(b) Isotopes

(c) Isotones

(d) Isosteres

Option d – Isosteres

Which of the following statements with regard to isotopes and isobars is/are correct? I. Isotopes have the same mass number. II. Isobars have the same atomic number. Select the correct answer using the codes given below.

(a) Only I

(b) Only II

(c) Both I and II

(d) Neither I nor II

Option d – Neither I nor II

In which one of the following is the valence electronic configuration, ns² np³ found?

(a) Carbon

(b) Oxygen

(c) Nitrogen

(d) Argon

Option c – Nitrogen

What are the maximum numbers of electrons that can be present in a shell represented by shell number ‘n’?

(a) 2n

(b) 2n²

(c) n

(d) n²

Option b – 2n²

What is the maximum number of electrons that the outermost shell can have?

(a) 2

(b) 6

(c) 8

(d) None of these

Option c – 8

Which of the following is the maximum number of electrons that can be present in an M-shell?

(a) 2

(b) 8

(c) 18

(d) 32

Option c – 18

We covered all the jee main atomic structure questions above in this post for free so that you can practice well for the exam.

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