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Questions and Answers
What is the molecular structure of diborane (B2H6)?
What is the molecular structure of diborane (B2H6)?
- Trigonal planar
- Bridged (correct)
- Linear
- Tetrahedral
What happens when borax is heated strongly?
What happens when borax is heated strongly?
- It forms boric acid
- It sublimes
- It turns into a glass-like material
- It decomposes to form sodium oxide and boron trioxide (correct)
What is the product when silicon is heated with methyl chloride at high temperature in the presence of copper?
What is the product when silicon is heated with methyl chloride at high temperature in the presence of copper?
- Copper silicide
- Silicon carbide
- Silicon tetrachloride
- Methyl silane (correct)
Why can concentrated nitric acid be transported in aluminum containers?
Why can concentrated nitric acid be transported in aluminum containers?
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Why does graphite have a lower melting point compared to diamond?
Why does graphite have a lower melting point compared to diamond?
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Why is aluminium alloy used to make aircraft bodies?
Why is aluminium alloy used to make aircraft bodies?
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Why is there a significant decrease in ionization enthalpy from carbon to silicon?
Why is there a significant decrease in ionization enthalpy from carbon to silicon?
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What is the primary difference in the physical properties of diamond and graphite?
What is the primary difference in the physical properties of diamond and graphite?
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Why should aluminum utensils not be kept in water overnight?
Why should aluminum utensils not be kept in water overnight?
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What is the reason for the lower atomic radius of gallium compared to aluminum?
What is the reason for the lower atomic radius of gallium compared to aluminum?
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