Chemistry

    Chemistry
    The vertical columns in the periodic table are called:
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    Chemistry
    Which among the following is poor conductor of heat?
    Relative to metals, glass is a poor conductor of heat. It is a better heat conductor than some other common building materials, such as wood.
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    Chemistry
    Which of the following is an example of mineral fuel?
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    Chemistry
    Vinegar contains which acid?
    Vinegar is an aqueous solution of acetic acid and trace compounds that may include flavorings. Vinegar typically contains 5–8% acetic acid by volume.
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    Chemistry
    The amount of energy given out when an electron is added to an atom is called:
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    Chemistry
    Value of 1 Faraday is equal to:
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    Chemistry
    Valency of noble gases is:
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    Chemistry
    Unsaturated carbon compound when burnt gives
    Unsaturated carbon compounds on combustion give a yellow flame with lots of black soot. On combustion, saturated carbon compounds give a clean flame while unsaturated carbon compounds give a yellow flame with lots of black soot.
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    Chemistry
    Which one of the following is the lightest metal?
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    Chemistry
    Aspirin is prepared by using
    Aspirin is prepared by chemical synthesis from salicylic acid, through acetylation with acetic anhydride. The molecular weight of aspirin is 180.16g/mol. It is odourless, colourless to white crystals or crystalline powder.
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