Menu
Home / General Knowledge / Chemistry :: section-3

General Knowledge :: Chemistry

Chemistry - Section 1
Chemistry - section-3
Chemistry - section-4
Chemistry - section-5
Chemistry - section-6
Chemistry - section-7
Chemistry - section-8
Chemistry - section-9
Chemistry - section-10
Chemistry - section-11
Chemistry - section-12
Chemistry - section-13
Chemistry - section-14
Chemistry - section-15
Chemistry - section-16
Chemistry - section-17
Chemistry - section - 2
  1. Man dies in the atmosphere of CO, because it

    2. A.

     Dries up the blood
    B.

     Combines with O2 present in the body
    C.

     Reduces the organic matter of tissues
    D.

     Combines with the haemoglobin of blood, thereby making the later incapable of absorbing O2

    View Answer

    Workspace

    Discuss Discuss in Forum

  2. It is dangerous to leave the car engine running in a closed garage, because it may cause serious pollution due to poisoning by emission of

    3. A.

     CO2
    B.

     CO
    C.

     Unburnt petrol
    D.

     SO2

    View Answer

    Workspace

    Discuss Discuss in Forum

  3. Which gas is used as fire extinguisher ?

    4. A.

     Carbon dioxide
    B.

     Carbon monoxide
    C.

     Carbon suboxide
    D.

     Sulphur dioxide

    View Answer

    Workspace

    Discuss Discuss in Forum

  4. The process which does not evolve CO2 in air is

    5. A.

     Burning
    B.

     Breathing
    C.

     Organic delay
    D.

     Photosynthesis

    View Answer

    Workspace

    Discuss Discuss in Forum

  5. The metal used to galvanise iron to protect it from rusting is

    6. A.

     Zinc
    B.

     Chromium
    C.

     Lead
    D.

     Antimony

    View Answer

    Workspace

    Discuss Discuss in Forum

  6. Iron is prevented from rusting by coating with zinc. This process is called as

    7. A.

     Galvanisation
    B.

     Corrosion
    C.

     Sublimation
    D.

     Reduction

    View Answer

    Workspace

    Discuss Discuss in Forum

  7. An electric iron has a heating element made of :

    8. A.

     Copper
    B.

     Tungsten
    C.

     Nichrome
    D.

     Zinc

    View Answer

    Workspace

    Discuss Discuss in Forum

  8. The metal chiefly used for galvanising iron is :

    9. A.

     Zinc
    B.

     Mercury
    C.

     Cadmium
    D.

     Tin

    View Answer

    Workspace

    Discuss Discuss in Forum

  9. The anode in a dry cell consists of

    10. A.

     Copper
    B.

     Zinc
    C.

     Cadmium
    D.

     Graphite

    View Answer

    Workspace

    Discuss Discuss in Forum

  10. When a spoon is to be electroplated with nickel the spoon is

    11. A.

     Dipped in a nickel sulphate solution
    B.

     Made anode and a pure nickel rod, the cathode
    C.

     Made cathode and a pure nickel red, the anode
    D.

     Coated with nickel sulphate and dried

    View Answer

    Workspace

    Discuss Discuss in Forum

Java Programming Questions and Answers Interview Questions and Answers