Answer: The black–brown water that drains from sinks, showers, toilets, and laundries is unclean because it is rich in lather and combined... View Article
Answer: We notice the display of static pictures on the screen in a specific order in a cartoon film. In most cases, static images are made to... View Article
Answer: Sanitation and disease are interrelated as lack of sanitation leads to illness and good sanitation practices prevent the diseases.... View Article
Answer: A charged balloon repels another charged balloon in the first scenario because both contain like charges, which repel each other. An... View Article
Answer: The human body is an electrical conductor. As a result, when we come into contact with a charged object, our bodies conduct their charges... View Article
Answer: Physical change - A substance is said to undergo a physical change when only the physical properties such as the shape, size, colour,... View Article
Answer: Lightning can be explained in terms of charges produced due to rubbing. During a thunderstorm, the air currents move upwards and the... View Article
Answer: Rusting of iron refers to the formation of rust, a mixture of iron oxides, on the surface of iron objects or structures. Rusting iron is... View Article
Answer: Thermosetting plastics are made up of long chains of molecules that are cross-linked. They have a very rigid structure. Thermosetting... View Article
Answer: After a long period of usage, the mortar and pestle lose their roughness, causing the frictional force to decrease and the mortar and... View Article
Answer: Plant regeneration and growth are aided by the diversity of plants and animals found in forests. Herbivores are supported by a wider... View Article
Answer: We always see the same side of the moon because the moon’s period of revolution around the earth is equal to the period of rotation... View Article
Answer: Acidity is also referred to as acid reflux. It is a common medical condition caused due to excessive production of acid by the stomach,... View Article
Answer: The acid which ants produce is called methanoic acid or formic acid. The chemical formula of formic acid is HCOOH. It is an anti injects... View Article
Answer: Factory wastes are acidic in nature which may cause harm to aquatic life. Hence, they are neutralised by using a base before disposing it... View Article
Answer: Look for two stars that form a quadrilateral near one end of the Ursa Major constellation. Imagine a straight line going through these... View Article
Answer: To convert the given trigonometric ratios in terms of cot functions, use trigonometric formulas We know that, cosec2A– cot2A = 1... View Article
