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