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  1. Asked: May 22, 2024In:

    Tetraethyl lead is used as

    Kavya T
    Kavya T Knowledge Contributor

    Organic lead (tetraethyl lead; TEL) is used as an antiknock agent in gasoline and jet fuels. TEL is absorbed rapidly from the skin as well as the lungs and gastrointestinal tract and is converted to triethyl lead in the body. This form of lead may be responsible for its toxic effects.

    Organic lead (tetraethyl lead; TEL) is used as an antiknock agent in gasoline and jet fuels. TEL is absorbed rapidly from the skin as well as the lungs and gastrointestinal tract and is converted to triethyl lead in the body. This form of lead may be responsible for its toxic effects.

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  2. Asked: May 22, 2024In:

    The variety of coal in which the deposit contains recognisable traces of the original plant material is

    Kavya T
    Kavya T Knowledge Contributor

    So, the variety of coal in which the deposit contains recognizable traces of the original plant material is peat.

    So, the variety of coal in which the deposit contains recognizable traces of the original plant material is peat.

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  3. Asked: May 22, 2024In:

    The hardest substance available on earth is

    Kavya T
    Kavya T Knowledge Contributor

    Diamond is the hardest naturally occurring substance found on earth. Diamonds also bend and reflect light and break it up into the colours of the rainbow, which is what gives them their sparkle.

    Diamond is the hardest naturally occurring substance found on earth. Diamonds also bend and reflect light and break it up into the colours of the rainbow, which is what gives them their sparkle.

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  4. Asked: May 22, 2024In:

    Bromine is a

    Kavya T
    Kavya T Knowledge Contributor

    Bromine is a chemical element; it has symbol Br and atomic number 35. It is a volatile red-brown liquid at room temperature that evaporates readily

    Bromine is a chemical element; it has symbol Br and atomic number 35. It is a volatile red-brown liquid at room temperature that evaporates readily

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  5. Asked: May 22, 2024In:

    Which of the gas is not known as green house gas?

    Kavya T
    Kavya T Knowledge Contributor

    Carbon dioxide, methane and water vapour are greenhouse gases. But the main constituents of the atmosphere nitrogen and oxygen are not greenhouse gases.

    Carbon dioxide, methane and water vapour are greenhouse gases. But the main constituents of the atmosphere nitrogen and oxygen are not greenhouse gases.

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  6. Asked: May 22, 2024In:

    Quartz crystals normally used in quartz clocks etc. is chemically

    Kavya T
    Kavya T Knowledge Contributor

    So, Quartz crystals are normally used in quartz clocks etc. is chemically silicon dioxide.

    So, Quartz crystals are normally used in quartz clocks etc. is chemically silicon dioxide.

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  7. Asked: May 22, 2024In:

    Washing soda is the common name for

    Kavya T
    Kavya T Knowledge Contributor

    Sodium carbonate is commonly known as Washing soda. The chemical formula for washing soda is Na 2 CO 3 . It is a salt of carbonic acid that is also known as soda ash.

    Sodium carbonate is commonly known as Washing soda. The chemical formula for washing soda is Na 2 CO 3 . It is a salt of carbonic acid that is also known as soda ash.

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  8. Asked: May 22, 2024In:

    The gas usually filled in the electric bulb is

    Kavya T
    Kavya T Knowledge Contributor

    Argon is a gas that is commonly used to fill incandescent light bulbs. It extends the life of the bulb by preventing the tungsten filament from deteriorating too quickly. Other gases used in lightning include helium, neon nitrogen, and krypton.

    Argon is a gas that is commonly used to fill incandescent light bulbs. It extends the life of the bulb by preventing the tungsten filament from deteriorating too quickly. Other gases used in lightning include helium, neon nitrogen, and krypton.

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  9. Asked: May 22, 2024In:

    Chemical formula for water is

    Kavya T
    Kavya T Knowledge Contributor

    Its chemical formula, H 2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°. In liquid form, H 2O is also called "Water" at standard temperature and pressure.

    Its chemical formula, H 2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°. In liquid form, H 2O is also called “Water” at standard temperature and pressure.

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  10. Asked: May 22, 2024In:

    Which of the following metals forms an amalgam with other metals?

    Kavya T
    Kavya T Knowledge Contributor

    Mercury (Hg) forms amalgam with other metals.

    Mercury (Hg) forms amalgam with other metals.

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