3rd Term Applied Chemistry Study Material

9th Standard

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Science

Time : 01:30:00 Hrs
Total Marks : 50
    10 x 1 = 10
  1. One Nanometre is

    (a)

    10-7 metre

    (b)

    10-8 metre

    (c)

    10-6 metre

    (d)

    10-9 metre

  2. The antibiotic Penicillin is obtained from ___________ 

    (a)

    plant

    (b)

    microorganism

    (c)

    animal

    (d)

    sunlight

  3. 1% solution of Iodoform is used as

    (a)

    antipyretic

    (b)

    antimalarial

    (c)

    antiseptic

    (d)

    antacid

  4. The cathode of an electrochemical reaction involves ____________

    (a)

    oxidation

    (b)

    reduction

    (c)

    neutralisation

    (d)

    catenation

  5. The age of a dead animal can be determined by using an isotope of ____________

    (a)

    carbon

    (b)

    iodine

    (c)

    phosphorous

    (d)

    oxygen

  6. Which of the following does not contain natural dyes?

    (a)

    Potato

    (b)

    Beetroot

    (c)

    Carrot

    (d)

    Turmeric

  7. This type of food protect us from deficiency diseases.

    (a)

    Carbohydrates

    (b)

    Vitamins

    (c)

    Proteins

    (d)

    Fats

  8. Radiochemistry deals with

    (a)

    oxidants

    (b)

    batteries

    (c)

    isotopes

    (d)

    nanoparticles

  9. The groups responsible for the colour of an organic compound is called

    (a)

    isotopes

    (b)

    auxochrome

    (c)

    chromogen

    (d)

    chromophore

  10. Chlorinated hydrocarbons are used as

    (a)

    fertilizers

    (b)

    pesticides

    (c)

    food colourants

    (d)

    preservatives

  11. 5 x 1 = 5
  12. ____________ is an electrochemical cell which converts electrical energy into chemical change(Reaction).

    ()

    Electrolytic cell

  13. Painkiller drugs are called ___________

    ()

    Analgesics

  14. Aspirin is an _____________

    ()

    Analgesic and Antipyretic

  15. ____________, ____________ and __________ are macronutrients required for plant growth.

    ()

    Nitrogen, phosphorous, potassium

  16. _____________ is a chemical used in finger print analysis.

    ()

    Ninhydrin

  17. 5 x 1 = 5
  18. Antipyretics

  19. (1)

    Fever

  20. Corrosion prevention

  21. (2)

    Iodine -131

  22. Hyperthyroidism

  23. (3)

    Cancer cell identification

  24. Nanoparticle

  25. (4)

    Large surface area

  26. Nano robotics

  27. (5)

    Electroplating

    6 x 5 = 30
  28. Draw the cell diagram of Daniel cell. Give its reactions.

  29. Explain the types of dyes based on their method of application.

  30. Name various food additives and explain their functions.

  31. Batteries that are used in mobile phone can be recharged. Likewise, can you recharge the batteries used in watches? Justify your answer.

  32. Sudha met with a fire accident. What kind of drug(s), she must take?

  33. The soil pH of a crop land is 5. What kind of fertilizers should be used in that land?

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