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The p-Block Ele...

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  • Question 1
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    Glass is best described as a : 

  • Question 2
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    Which silicon compound is used as lubricant?

  • Question 3
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    Directions For Questions

    The name 'silica' covers an entire group of minerals, which have the general formula $$SiO_2$$, the most common of which is quartz. Quartz is a framework silicate with $$SiO_4$$ tetrahedral arranged in spirals. The spirals can turn in a clockwise or anti-clockwise direction-a feature that results in there being two mirror images, optically active, varieties of quartz.

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    The following pictures represent various silicate anions. Their formula are respectively:

  • Question 4
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    Silicon is the _________ abundant element in the earth's crust.

  • Question 5
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    Number of isotopes of carbon is :

  • Question 6
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    Thallium shows different oxidation states because :

  • Question 7
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    Which of the following is most stable?

  • Question 8
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    Aluminium is much more reactive than iron because its standard reduction potential is higher than iron. Still, aluminium is less easily corroded than iron because :

  • Question 9
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    Boron compounds behave as Lewis acids because of their :

  • Question 10
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    Which is likely to show inert pair effect?

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