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    Class: 7 Subject: Biology Topic: Wastewater Story No. of Questions: 20 Duration: 60 Min Maximum Marks: 60

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    siba padhy
    The document is a 20 question quiz about wastewater and water treatment. It covers topics like world water day, chemicals used to disinfect water, the cleaning process of water, types of waste discharged from homes and humans, low cost sewage disposal methods, causes of diseases like cholera, increasing water scarcity, liquid waste classification, and components of proper housekeeping practices. The quiz aims to test understanding of these concepts over a duration of 60 minutes for a maximum of 60 marks.

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    Class: 7 Subject: Biology Topic: Wastewater Story No. of Questions: 20 Duration: 60 Min Maximum Marks: 60

    Uploaded by

    siba padhy
    255 views7 pages
    The document is a 20 question quiz about wastewater and water treatment. It covers topics like world water day, chemicals used to disinfect water, the cleaning process of water, types of waste discharged from homes and humans, low cost sewage disposal methods, causes of diseases like cholera, increasing water scarcity, liquid waste classification, and components of proper housekeeping practices. The quiz aims to test understanding of these concepts over a duration of 60 minutes for a maximum of 60 marks.

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    class7

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    cbse

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    The document is a 20 question quiz about wastewater and water treatment. It covers topics like world water day, chemicals used to disinfect water, the cleaning process of water, types of waste discharged from homes and humans, low cost sewage disposal methods, causes of diseases like cholera, increasing water scarcity, liquid waste classification, and components of proper housekeeping practices. The quiz aims to test understanding of these concepts over a duration of 60 minutes for a maximum of 60 marks.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    255 views7 pages

    Class: 7 Subject: Biology Topic: Wastewater Story No. of Questions: 20 Duration: 60 Min Maximum Marks: 60

    Uploaded by

    siba padhy
    The document is a 20 question quiz about wastewater and water treatment. It covers topics like world water day, chemicals used to disinfect water, the cleaning process of water, types of waste discharged from homes and humans, low cost sewage disposal methods, causes of diseases like cholera, increasing water scarcity, liquid waste classification, and components of proper housekeeping practices. The quiz aims to test understanding of these concepts over a duration of 60 minutes for a maximum of 60 marks.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 7

    Class: 7

    Subject: Biology
    Topic: Wastewater story
    No. of Questions: 20
    Duration: 60 Min
    Maximum Marks: 60

    Q1. When is world water day celebrated?

    a. 22nd March

    b. 1st December

    c. 15th September

    d. 26th June

    Answer: a. The day was declared in 1993.

    Q2. Name any two chemicals that are used to disinfect water

    a. Chlorine and ozone

    b. Hydrogen and oxygen

    c. Chlorine and oxygen

    d. Oxygen and ozone

    Answer: a. chlorine and ozone are very effective against bacteria, viruses and fungi that contaminate
    water.

    Q3. Cleaning of water is a process of removing

    a. Bacteria

    b. Algae

    c. Pollutants
    d. Protozoa

    Answer: c. Pollutant include everything that harm water.

    Q4. Wastewater released by houses is called

    a. Manure

    b. Sewage

    c. Sludge

    d. Chemicals

    Answer: b. Sewage is a water-carried waste

    Q5. Dried ______ is used as manure

    (a) Sludge

    (b) Wastewater

    (c) Bacteria

    (d) Algae

    Answer: a. Manure increases the quality of the soil.

    Q6. Drains get blocked by ___________ and ____________.

    (a) Fruit peels, vegetable peels

    (b) Plastic bags, cans

    (c) Cooking oil, fat

    (d) Grit, sand

    Answer: c. On getting harden it blocks the pathway.


    Q7. Example of low cost sewage disposal is

    (a) Septic tank

    (b) Chemical toilets

    (c) Composting pits

    (d) All of the above

    Answer: d. Much expenses are not need for disposing sewage in all of these options.

    Q8. Microorganisms which causes cholera

    (a) Bacteria

    (b) Virus

    (c) Protozoa

    (d) Fungi

    Answer: a. Cholera is an infection of the small intestine by the bacterium Vibrio cholera

    Q9. Waste matter discharged from human body

    (a) Fat

    (b) Protein

    (c) Excreta

    (d) Mineral

    Answer: c. waste matter discharged from the body, especially in the form of faeces and urine is known
    as the excreta.
    Q10. Which decade has been decided for action on “Water for life”?

    (a) 2005-2015

    (b) 1991-2000

    (c) 2001-2010

    (d) 1995-2005

    Answer: a. Its primary goal is to promote efforts to fulfill international commitments made on water and
    water–related issues

    Q11. The increasing scarcity of fresh water is due to

    a. Population growth

    b. Pollution

    c. Industrial development

    d. All of the above

    Answer: d. All of the above are the reasons for water scarcity.

    Q12. Liquid waste consisting of suspended impurities is called

    a. Contaminant

    b. Sewage

    c. Aeration

    d. Chlorination

    Answer: b. Sewage is a water-carried waste

    Q13. WWTP stands for

    a. Waste Water Therapy Plant

    b. Waste Water Treatment Plant


    c. Waste Water Travel Plant

    d. Waste Water Tremendous Plant

    Answer: b. WWTP - Waste water treatment plant

    Q14. Cooking oil and fats should not be thrown down the drain because

    a. They flow through the drain freely

    b. It allows the particles to get filtered

    c. They harden and block the pipes

    d. They break the pipe

    Answer: c. they harden and block the pipes

    Q15. Better housekeeping practices includes

    a. Cooking oil and fats should not be thrown down the drain

    b. Chemicals like paints, solvents, insecticides should not be thrown the drain

    c. Used tea leaves, solid food, cotton should not be thrown in the drain

    d. All of the above

    Answer: d. All of the above should be done for better housekeeping.

    Q16. Water borne disease is

    a. Diabetes

    b. Cancer

    c. Appendicitis

    d. Cholera
    Answer: d. Cholera occur due to vibrio cholrae.

    Q17. A resource much needed for soil is

    a. Septic Tank

    b. Chemical Toilet

    c. Vermi- Processing Toilet

    d. Composing pits

    Answer: d. Manure formation occur in Composing pits

    Q18. The vascular tissue for the transport of water and nutrients in the plant is called

    a. Xylem

    b. Phloem

    c. Tissue

    d. Plasma

    Answer: a. Xylem conveys water and dissolved minerals from the roots to the rest of the plant.

    Q19. A pipe carrying sewage is called

    a. Test tube

    b. Sewer

    c. Pump

    d. Glass pipe

    Answer: b. Sewer collects the sewage.


    Q20. Which of the following is not an organic impurity?

    a. Human feces

    b. Oil

    c. Metals

    d. Fats

    Answer: c. Metals constitute the inorganic impurity.

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