Atomic Structure

Atomic Structure

Easy Questions
Moderate Questions

Chemistry

Nature and Composition of Substances
Atomic Structure
Radioactivity
Periodic classification of element
Chemistry in Every Day Life
Biomolecules
Hydrocarbons and Its Derivatives
Non Metals and Their Compounds
Metals and Their Compounds
Surface Chemistry
Electrolytes & Electrochemistry
Solutions
Thermodynamics and Energetics
Catalysis
Properties of Gases
Acids, Bases and Salt
Oxidation and Reduction
Chemical Bonding
Chemistry miscellaneous
  1. Which one of the among the following is used as a moderator in nuclear reactors?








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    In nuclear reactor heavy water (D2O) used to slow down the speed of neutron i.e., act as moderator.

    Correct Option: C

    In nuclear reactor heavy water (D2O) used to slow down the speed of neutron i.e., act as moderator.

  1. An ideal gas is one which obeys








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    A gas that, when kept at a constant temperature, would obey the gas laws exactly.

    Correct Option: A

    A gas that, when kept at a constant temperature, would obey the gas laws exactly.

  1. Gamma rays are








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    Gamma radiation, also known as gamma rays, are electromagnetic radiation of extremely high frequency.

    Correct Option: C

    Gamma radiation, also known as gamma rays, are electromagnetic radiation of extremely high frequency.

  1. Species containing same number of electrons are called








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    Species containing same number of electrons are called Isoelectronics.

    Correct Option: C

    Species containing same number of electrons are called Isoelectronics.

  1. In isotopes the number of neutrons are








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    Isotopes have same atomic number (A) but different atomic mass (Z). Hence the value of neutrons (Z - A) will be different.

    Correct Option: B

    Isotopes have same atomic number (A) but different atomic mass (Z). Hence the value of neutrons (Z - A) will be different.