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