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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

    Ortho hydrogen and para hydrogen differ in

    Solution

    Ortho hydrogen and para hydrogen differ in the direction in which the two protons are present in the nuclei of two H-atoms.

     

  • Question 2
    1 / -0

    Heavy water is a form of water where the hydrogen atoms are the isotope variant deuterium. It is also called deuterium oxide.

    Which of the following statements regarding deuterium oxide is not correct ?

    Solution

    The option (4) is incorrect because heavy water is not safe to drink.Drinking just a few milliliters or anything up to a regular glass of water might not actually have any noticeable effects. However, any amount larger than that would cause dizziness probably because heavy water has a greater density than regular water and can affect the fluid in the inner ear which is essential for keeping the balance.

     

  • Question 3
    1 / -0

    Which of the following substances are used as starting materials in Bosch reaction?

    Solution

    Bosch reaction is a chemical reaction between carbon dioxide and hydrogen that produces elemental carbon (graphite), water and a 10% return of invested heat.
    The following reaction takes place:
    CO2 (g) + 2H2 (g) → C (s) + 2H2O (g)

     

  • Question 4
    1 / -0

    Identify the pair which is not reduced by hydrogen, even though it has reducing properties.

    Solution

    The oxides of highly reactive metals and ions of metals, that are placed above hydrogen in the electrochemical series, are not reduced by hydrogen.

     

  • Question 5
    1 / -0

    Which among the following is considered as an anomalous compound?

    Solution

    The anomalous properties of water are those where the behaviour of liquid water is quite different from what is found with other liquids. Frozen water (ice) also shows anomalies when compared with other solids. Although it is an apparently simple molecule (H2O), it has a highly complex and anomalous character due to its intramolecular hydrogen bonding.

     

  • Question 6
    1 / -0

    The following question has four choices out of which ONLY ONE is correct.

    Polyphosphates are used as water softening agents in sequestration because they

    Solution

    CaCl2 + (NaPO3)n → Nan - 2Ca(PO3)n + 2NaCl

     

  • Question 7
    1 / -0

    Decomposition of hydrogen peroxide is prevented by

    Solution

    Small amounts of glycerol and sulphuric acid retard the decomposition of hydrogen peroxide.

     

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