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Hydrogen Test - 4

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Hydrogen Test - 4
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Weekly Quiz Competition
  • Question 1
    1 / -0
    When Mg3N2 is subjected to deuterolysis, the product obtained is
  • Question 2
    1 / -0

    Hydrogen has three isotopes: protium, deuterium, and tritium. Which of them is radioactive and emits beta particles ?

    Solution

    Due to unfavourable neutron to proton ratio, tritium emits low energy beta particles.

  • Question 3
    1 / -0

    Heavy hydrogen is also called

    Solution

    Deuterium, (D, or 2H), also called heavy hydrogen, isotope of hydrogen with a nucleus consisting of one proton and one neutron, which is double the mass of the nucleus of ordinary hydrogen (one proton). Deuterium has an atomic weight of 2.014.

  • Question 4
    1 / -0
    Match the following.

    List - I (Hydride) List - II (Type of hydride)
    A. BeH2 1. Complex
    B. AsH3 2. Lewis acid
    C. B2H6 3. Interstitial
    D. LaH3 4. Covalent
    E. LiAlH4 5. Intermediate
      6. Ionic
  • Question 5
    1 / -0

    Hydrogen is the first element in the periodic table and has resemblance to alkali metals as well as with halogens. However, its placement in the periodic table has been a subject of discussion in the past. Currently hydrogen is placed in which group?

    Solution

    H properties matches with alkali metal as well as halogens so it is placed separately

  • Question 6
    1 / -0

    Dihydrogen reacts with dioxygen to form water. The reaction is.

    Solution

    The formation of water from it's elements produces, in addition to water, a tremendous amount of energy, 572 kJ to be exact.

    2H2 + O2 → 2H2O + ENERGY

    This is an example of an exothermic reaction, a reaction that produces energy. It is also an example of what is called a combustion reaction, where a substance (in this case hydrogen gas) is combined with oxygen.

  • Question 7
    1 / -0
    Which of the following products are obtained when electricity is passed through acidified water?
  • Question 8
    1 / -0

    Hydrogen has the simplest atomic structure among all the elements around us in Nature. Its electronic configuration is

    Solution

    As Hydrogen has 1 electron which fills in orbital of s subshell of First Shell.

  • Question 9
    1 / -0
    Which of the following is not correct regarding the electrolytic preparation of H2O2?
  • Question 10
    1 / -0
    Which of these hydrogen halides forms salts like KHX2 (where X is a halogen atom)?
  • Question 11
    1 / -0
    Which of the following processes will produce permanent hard water?
  • Question 12
    1 / -0
    The ionisation energy of hydrogen is
  • Question 13
    1 / -0
    When a substance A reacts with H2O, it produces a combustible gas B and solution of C in water. When another substance D reacts with this solution of C, it produces the same gas B on warming. But D can produce the same gas B on reaction with dil. H2SO4 at room temperature. A imparts golden yellow colour to Bunsen flame. A, B, C and D respectively are
  • Question 14
    1 / -0
    On shaking H2O2 with acidified potassium dichromate and ether, ethereal layer becomes
  • Question 15
    1 / -0
    For the laboratory preparation of H2O2,
  • Question 16
    1 / -0
    Which of the following substances is formed when dihydrogen reacts with CO at 700 K in the presence of ZnO/Cr2O3 (catalyst)?
  • Question 17
    1 / -0
    When hydrogen peroxide is added to an acidified solution of potassium dichromate, a blue colour is produced due to the formation of
  • Question 18
    1 / -0
    How many hydrogen bonds are formed by one water molecule in ice?
  • Question 19
    1 / -0
    Which of the following are the products of the reaction of aluminium with boiling water?
  • Question 20
    1 / -0
    Which of the following is used as a moderator in nuclear reactors?
  • Question 21
    1 / -0

    Hydrogen is unique in behaviour because of its

    Solution

    It has extremely small size with no neutron. So it can lose and gain electron which make it unique.

  • Question 22
    1 / -0

    In the earth’s atmosphere, hydrogen exists in the form of

    Solution

    In the combined form it constitutes 15.4% of the earth crust and the ocean.

  • Question 23
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    Electrolysis of a hydrochloric acid solution produces
  • Question 24
    1 / -0

    The three isotopes of hydrogen in terms of chemical properties show one of the following properties

    Solution

    difference in their rates of reactions is due to the difference in the atomic mass of the isotopes.

  • Question 25
    1 / -0
    O2F2 molecule resembles H2O2 in
  • Question 26
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    Which of the following is not a method of commercial production of dihydrogen?
  • Question 27
    1 / -0

    The giant planets Jupiter and Saturn consist mostly of

    Solution

    The name ‘gas giant’ was coined in 1952 by science fiction writer James Blish to refer to all the giant planets. The giant planets (Jupiter and Saturn) are huge gas balls, which is quite different than Earth and and other three rocky inner planets. Gas giants are primarily composed of gases, such as hydrogen and helium, and a much thicker layer of metallic hydrogen, along with a molten rocky core.

    Unlike rocky planets, gas giants do not have a well-defined surface, and there is no clear boundary between where the atmosphere ends and the surface begins. In other words, you wouldn’t be able to land on these planets, as their atmospheres simply become gradually denser towards the core, perhaps with liquid or liquid-like states somewhere in between..

  • Question 28
    1 / -0
    Which of the following processes is not used for concentration of hydrogen peroxide?
  • Question 29
    1 / -0
    Which of the following cannot be used for water softening?
  • Question 30
    1 / -0

    For the synthesis of methanol and a number of hydrocarbons , the compounds used are

    Solution

    A mixture of CO and H2 in any ratio is called synthesis gas or syn gas as it is used in synthesis of methanol and a number of hydrocarbon.

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