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Why Do we Fall Ill Science - Why Do we Fall Ill

Bihar Board (BSEB) - STD 9 - Science (BSEB - English Medium). 472 questions in this chapter.

Question types

Why Do we Fall Ill question types

472 questions across 9 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

472
Questions
9
Question groups
5
Question types
Sample Questions

Why Do we Fall Ill questions

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

Q 1M.C.Q. [1 M]1 Mark
Antibiotics used in treatment of bacterial and fungal diseases are:
  • A
    The names of useful bacteria.
  • B
    Toxins produced by bacteria.
  • C
    Drugs manufactured to kill viruses.
  • ✓
    Products of metabolism in some bacteria.

Answer: D.

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Q 2M.C.Q. [1 M]1 Mark
The diseases where microbes are the immediate causes, are called:
  • ✓
    Infectious diseases
  • B
    Non$-$infectious diseases
  • C
    Chronic diseases
  • D
    Acute diseases

Answer: A.

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Q 6Assertion (A) & Reason (B) MCQ1 Mark
In the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as:
Assertion: If the target organ for a disease is lungs, the symptoms will be cough and breathlessness.
Reason: Signs and symptoms of a disease depend on the tissue or organ targeted.
  • ✓
    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.

Answer: A.

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Q 7Assertion (A) & Reason (B) MCQ1 Mark
In the following Questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:
Assertion: Infectious diseases can be treated by two ways, one by reducing the effect of the disease and the other by killing the cause of the disease.
Reason: Fever, pain, loose motion are symptoms.
  • A
    Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.
  • B
    The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.
  • ✓
    Assertion is true but the Reason is false.
  • D
    The statement of the Assertion is false but the Reason is true.

Answer: C.

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Q 8Assertion (A) & Reason (B) MCQ1 Mark
In the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the statements, mark the correct answer as:
Assertion: Cholera is a protozoan disease.
Reason: An infection of small intestine, caused by Entamoeba histolytica.
  • 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.
  • ✓
    If Assertion and Reason both are false.

Answer: D.

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Q 37Que-Ans (Each of 5 Mark )5 Marks
It was diagnosed that the body of a patient has lost its power of fighting any infection. Name the disease he is suffering from. What type of microbe is responsible for this disease and how does it spread from one person to the other.
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Q 39Case study ( 4 Marks )4 Marks
How many times did you fall ill in the last one year? What were the illnesses?
  1. Think of one change you could make in your habits in order to avoid any of/ most of the above illnesses.
  2. Think of one change you would wish for in your surroundings in order to avoid any of/ most of the above illnesses.
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