Ncert- science – class 7-Chapter 13 – Wastewater Story 2 Welcome to your Ncert- science – class 7-Chapter 13 – Wastewater Story 2 1. The soil pores block and become ineffective in filtering the water due to Disposal of oil in drainage pipe. Disposal of oil in open drain. None of the above. Disposal of oil in garden. None 2. The disease caused due to improper sanitation in public place is Endemic Pandemic None of the above. Non-communicable None 3. Black brown water that goes down the drain from sink is called as All of the above Wastewater sewage water Septic water None 4. What is the main cause of pollution of water in India? Discharge of industrial waste Bathing Both Discharge of untreated sewage and Discharge of industrial waste Discharge of untreated sewage None 5. In which of the following process, human excreta is completely converted to vermi cakes Vermi-processing toilets Vermicomposting Biogas production Sewage treatment None 6. A disease can spread from one person to population by Improper sanitation in home. Sharing of food. Improper sanitation in public places. Sharing of water bottle. None 7. Pollution due to sewage can be reduced by Both Creating separate chemical toilets. AndConstructing septic tanks. Creating separate chemical toilets. Constructing septic tanks. Letting off drainage in rivers. None 8. Identify the best way to conserve water at home. Turn off tap while brushing teeth Installation of rain barrel All of the above Fixing leaky faucets None 9. Chlorine tablet is used to remove .......... from waste water. Odour Dark colour Bacteria All of the above None 10. Drains get blocked by : Chemicals and soil. Oil and tea leaves. Oil and chemicals. Chemicals and water. None 11. Cooking oil should not be thrown down the drain because They block the drainage pipes. They do not allow bacteria to decompose waste. They do not allow free flow of oxygen. None 12. Which of the following happens when the garbage in dumped into the rivers? All of the above Water becomes unfit for drinking The inlets and ground water sources are blocked Fishes and water plants die None 13. Sanitation at public places can be maintained by Proper drainage. All of the above. Sufficient public toilet facilities. Garbage management. None 14. Which of the following is associated with the vermi-processing toilets? Electronic toilet Low water use toilet Kid's toilet None of the above None 15. Atul is traveling from Mumbai to Nagpur by train, in between, he felt uneasy because None of the above. He used the properly sanitized public toilet. He was already sick. He used an improperly sanitized public toilet. None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
