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