Ncert- science – class 7-Chapter 13 – Wastewater Story 2 Welcome to your Ncert- science – class 7-Chapter 13 – Wastewater Story 2 1. In which of the following process, human excreta is completely converted to vermi cakes Vermi-processing toilets Sewage treatment Vermicomposting Biogas production None 2. Identify the best way to conserve water at home. Turn off tap while brushing teeth Fixing leaky faucets All of the above Installation of rain barrel None 3. Which of the following is associated with the vermi-processing toilets? Electronic toilet Low water use toilet None of the above Kid's toilet None 4. Which of the following happens when the garbage in dumped into the rivers? The inlets and ground water sources are blocked All of the above Fishes and water plants die Water becomes unfit for drinking None 5. What is the main cause of pollution of water in India? Both Discharge of untreated sewage and Discharge of industrial waste Bathing Discharge of untreated sewage Discharge of industrial waste None 6. A disease can spread from one person to population by Sharing of water bottle. Improper sanitation in home. Sharing of food. Improper sanitation in public places. None 7. Atul is traveling from Mumbai to Nagpur by train, in between, he felt uneasy because He used the properly sanitized public toilet. He used an improperly sanitized public toilet. None of the above. He was already sick. None 8. 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 9. Black brown water that goes down the drain from sink is called as Septic water Wastewater sewage water All of the above None 10. 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 11. The disease caused due to improper sanitation in public place is Endemic None of the above. Non-communicable Pandemic None 12. Drains get blocked by : Chemicals and soil. Chemicals and water. Oil and tea leaves. Oil and chemicals. None 13. Sanitation at public places can be maintained by All of the above. Proper drainage. Sufficient public toilet facilities. Garbage management. None 14. Chlorine tablet is used to remove .......... from waste water. All of the above Odour Dark colour Bacteria None 15. Pollution due to sewage can be reduced by Constructing septic tanks. Both Creating separate chemical toilets. AndConstructing septic tanks. Creating separate chemical toilets. Letting off drainage in rivers. 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.
