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  • Question 1
    1 / -0

    BCl3 does not exist as dimmer but BH3 exist as dimmer (B2H6) because -

  • Question 2
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    Oxygen is denser than air so it is collected over–

  • Question 3
    1 / -0

    Oxygen molecule exhibits–

  • Question 4
    1 / -0

    Oxide of a non-metal possesses the following characteristics– 
    (i) It is both a proton donor and an acceptor.
    (ii) It is a poor conductor of electricity in its pure form. 
    (iii) It reacts readily with basic and acidic oxides.
    (iv) It oxidises Fe at its boiling point.
    This oxide is

  • Question 5
    1 / -0

    Oxygen has + 2 oxidation state in the compound –

  • Question 6
    1 / -0

    Boron reacts with nitric acid to form -

  • Question 7
    1 / -0

    In the electrolysis of method of boron extraction the cathode is made of -

  • Question 8
    1 / -0

    B4C is also known as -

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