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Test: Atomic Structure - SSC CGL MCQ


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15 Questions MCQ Test General Awareness for SSC CGL - Test: Atomic Structure

Test: Atomic Structure for SSC CGL 2024 is part of General Awareness for SSC CGL preparation. The Test: Atomic Structure questions and answers have been prepared according to the SSC CGL exam syllabus.The Test: Atomic Structure MCQs are made for SSC CGL 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Atomic Structure below.
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Test: Atomic Structure - Question 1

What is the fundamental unit of an element that participates in a chemical reaction?

Detailed Solution for Test: Atomic Structure - Question 1

The fundamental unit of an element that participates in a chemical reaction is an atom. Atoms consist of electrons, protons, and neutrons. Each element is made up of unique atoms that determine its properties and behavior in chemical reactions.

Test: Atomic Structure - Question 2

Who discovered the neutron?

Detailed Solution for Test: Atomic Structure - Question 2

The neutron was discovered by James Chadwick. Neutrons are neutral particles found in the nucleus of an atom alongside protons. Their discovery contributed significantly to our understanding of atomic structure and nuclear interactions.

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Test: Atomic Structure - Question 3

What is the atomic number of an element equal to?

Detailed Solution for Test: Atomic Structure - Question 3

The atomic number of an element is equal to the number of protons present inside the nucleus of its atom. It defines the element's identity and determines its placement on the periodic table based on the number of protons in its nucleus.

Test: Atomic Structure - Question 4

According to Dalton's Atomic Theory, which of the following statements is true about atoms?

Detailed Solution for Test: Atomic Structure - Question 4

Dalton's Atomic Theory proposed that all matter is made up of indivisible and indestructible atoms, and all atoms of a given element have identical properties, including identical mass. This theory laid the foundation for modern atomic theory by emphasizing the concept of elements being composed of identical atoms.

Test: Atomic Structure - Question 5

What is the major limitation of Thomson's Atomic Model?

Detailed Solution for Test: Atomic Structure - Question 5

Thomson's Atomic Model couldn't explain the origin of the spectral series of hydrogen and other atoms. This limitation led to the need for further developments in atomic theory, eventually leading to the Rutherford and Bohr models, which provided more accurate descriptions of atomic structure.

Test: Atomic Structure - Question 6

Which region of the electromagnetic spectrum is primarily responsible for heat radiation?

Detailed Solution for Test: Atomic Structure - Question 6

The Infrared Region of the electromagnetic spectrum is mainly associated with heat radiation. This region includes frequencies beyond the visible light spectrum, and objects emit infrared radiation as heat. Infrared radiation is commonly used in various applications, including thermal imaging and heat detection.

Test: Atomic Structure - Question 7

According to the distribution rules proposed by Bohr and Burry, what is the maximum number of electrons that can be accommodated in the outermost orbit of an atom?

Detailed Solution for Test: Atomic Structure - Question 7

As per the distribution rules suggested by Bohr and Burry, the maximum number of electrons that can be accommodated in the outermost orbit of an atom is 8. This principle is crucial in understanding the electron configuration of atoms and how electrons are distributed across different energy levels.

Test: Atomic Structure - Question 8

Which quantum number determines the subshell (s, p, d, f) in a given principal energy level of an atom?

Detailed Solution for Test: Atomic Structure - Question 8

The Azimuthal Quantum Number (l) determines the subshell (s, p, d, f) in a given principal energy level of an atom. It helps in specifying the shape and type of the orbital within a particular energy level, providing important information about the distribution of electrons in an atom.

Test: Atomic Structure - Question 9

Which principle states that electrons enter the orbital of lowest energy first, followed by subsequent electrons in increasing energy order?

Detailed Solution for Test: Atomic Structure - Question 9

The Aufbau Principle states that electrons enter the orbital of lowest energy first, followed by subsequent electrons in increasing energy order. This principle guides the arrangement of electrons in atoms based on their energy levels, helping to understand the stability and structure of atomic configurations.

Test: Atomic Structure - Question 10

What property do some heavy elements exhibit where they disintegrate into lighter elements by emitting radiations?

Detailed Solution for Test: Atomic Structure - Question 10

Some heavy elements exhibit the property of radioactivity, where they disintegrate into lighter elements by emitting radiation. This process was discovered by Henri Becquerel in 1896. Radioactivity is a crucial concept in nuclear physics and has various applications in different fields, including medicine, archaeology, and industry.

Test: Atomic Structure - Question 11

Which type of radiation consists of fast-moving electrons?

Detailed Solution for Test: Atomic Structure - Question 11

β-rays consist of fast-moving electrons. These electrons are emitted during the process of beta decay, which is a type of radioactive decay. Understanding the properties and behaviors of β-rays is essential in the study of nuclear physics and radiation.

Test: Atomic Structure - Question 12

What law states that emission of an α-particle results in the formation of a new element two places to the left of the parent element in the periodic table?

Detailed Solution for Test: Atomic Structure - Question 12

Soddy Fajan's Group Displacement Law states that when an α-particle is emitted, a new element is formed two places to the left of the parent element in the periodic table. This law helps in understanding the relationship between radioactive decay and the formation of new elements in the decay series.

Test: Atomic Structure - Question 13

Which subatomic particle is a positively charged counterpart of the electron?

Detailed Solution for Test: Atomic Structure - Question 13

The positron is a positively charged counterpart of the electron, discovered by Anderson in 1932. It plays a crucial role in particle physics and is involved in various interactions within the atomic and subatomic realms.

Test: Atomic Structure - Question 14

According to Planck's Quantum Theory, how is the energy of a quantum of radiation related to its frequency?

Detailed Solution for Test: Atomic Structure - Question 14

Planck's Quantum Theory states that the energy of a quantum of radiation is directly proportional to its frequency. This relationship is expressed by the equation E = hν, where E is energy, ν is frequency, and h is Planck's constant. This theory revolutionized the understanding of energy at the atomic and subatomic levels.

Test: Atomic Structure - Question 15

How does Pauli's Exclusion Principle impact the arrangement of electrons in an atom?

Detailed Solution for Test: Atomic Structure - Question 15

Pauli's Exclusion Principle, proposed by Wolfgang Pauli, establishes that no two electrons in an atom can have the same set of four quantum numbers. This principle is fundamental in understanding the behavior of electrons in atoms and plays a crucial role in determining the electron configurations of elements.

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