7. CBQ - Applications of non-metals

 

Kavi wakes up in the morning and goes for a jog. She breathes continuously to obtain energy. Later, she drinks purified water from a water purifier. In the evening, she visits her grandfather's farm where nitrogen-rich fertilisers are being applied to improve crop growth.

 

1. Which non-metal is commonly used in water purification? - CarbonChlorineNitrogenOxygen

 

2. Which non-metal is associated with the fertilisers used on the farm? - OxygenChlorineCarbonNitrogen

 

3. Which option correctly matches the non-metals with their roles? - Oxygen – Antiseptic, Nitrogen – Water Purification, Chlorine – RespirationOxygen – Fertiliser, Nitrogen – Respiration, Chlorine – NutritionOxygen – Water Purification, Nitrogen – Respiration, Chlorine – FertilisersOxygen – Respiration, Nitrogen – Fertilisers, Chlorine – Water Purification

 

4. If Kavi stopped receiving oxygen, crops stopped receiving nitrogen fertilisers, and water was not purified, which of the following would most likely occur? - Improved health, crop growth, and water qualityIncreased energy production and cleaner waterDifficulty in respiration, reduced crop yield, and increased water-borne diseasesFaster plant growth and healthier communities