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CHEMISTRY CH16 Applied Chemistry Science - CHEMISTRY CH16 Applied Chemistry

Tamil Nadu Board - STD 9 - Science (Tamil - English Medium). 118 questions in this chapter.

Question types

CHEMISTRY CH16 Applied Chemistry question types

118 questions across 8 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

118
Questions
8
Question groups
5
Question types
Sample Questions

CHEMISTRY CH16 Applied Chemistry questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
The groups responsible for the colour of an organic compound is called ______.
  • A
    isotopes
  • B
    auxochrome
  • C
    chromogen
  • D
    chromophore
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Q 3MCQ1 Mark
This type of food protect us from deficiency diseases.
  • A
    Carbohydrates
  • B
    Vitamins
  • C
    Proteins
  • D
    Fats
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Q 5MCQ1 Mark
The age of a dead animal can be determined by using an isotope of ______.
  • A
    carbon
  • B
    iodine
  • C
    phosphorous
  • D
    oxygen
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Q 6Assertion (A) & Reason (B) MCQ1 Mark
Assertion (A) : Our retinal print can be forged.
Reason (R) : Our retinal print is unique.
  • A
    If both assertion and reason are true and Reason is the correct explanation of Assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • D
    If assertion is false but reason is true
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Q 7Assertion (A) & Reason (B) MCQ1 Mark
Assertion (A) : It is possible to detect alcohol drunken drivers.
Detection is done through the electrochemical redox reaction of alcohol.
  • A
    If both assertion and reason are true and Reason is the correct explanation of Assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • D
    If assertion is false but reason is true
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Q 8Assertion (A) & Reason (B) MCQ1 Mark
Assertion (A) : Metals like iron are electroplated with chromium. Reason (R) : Electroplating is done to protect chromium from rusting.
  • A
    If both assertion and reason are true and Reason is the correct explanation of Assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • D
    If assertion is false but reason is true
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Q 9Assertion (A) & Reason (B) MCQ1 Mark
Assertion (A) : After eating fruits (or) vegetables, one may feel uncomfortable due to a burning sensation.Reason (R) : Burning sensation is due to an imbalance in the acidity of the stomach.
  • A
    If both assertion and reason are true and Reason is the correct explanation of Assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • D
    If assertion is false but reason is true
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Q 10Assertion (A) & Reason (B) MCQ1 Mark
Assertion (A) : Antiseptic is a substance that prevents infections caused by disease-causing pathogens.
Reason (R) : Antiseptics either kill the microorganism or prevent their growth.
  • A
    If both assertion and reason are true and Reason is the correct explanation of Assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • D
    If assertion is false but reason is true
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Q 11[2 Mark Questions]2 Marks
Higher Order Thinking Skill.
?Batteries that are used in mobile phone can be recharged. Likewise, can you recharge the batteries used in watches? Justify your answer
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Q 16Match The Following.4 Marks
Match the following.
Antipyretics Large surface area
Corrosion prevention Iodine-131
Hyperthyroidism Fever
Nanoparticle Body building
Proteins Electroplating
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Q 19Match The Following.4 Marks
Column IColumn II
Cathodic electrolytePotassium chlorate (KClO3)
Anodic electrolytePotassium chloride (KCl)
Salt bridgesulphate CuSO4
Electro manufacturingZinc sulphate(ZnSO4)
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Q 20Match The Following.4 Marks
Name of the DrugPurposeExample
1. AntipyreticsKills the microorganismChloroform
2. AnaestheticsPain relieverNovalgin
3. AntisepticsReduction of feverparacetamol
4. AnalgesicsCure for malariaQuinine
5. AntimalarialLoss of sensationHydrogen peroxide
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