Are CFCs banned in India? India has successfully achieved the complete phase out of Hydrochlorofluorocarbon (HCFC)-141 b, which is a chemical used by foam manufacturing enterprises and one of the most potent ozone depleting chemical after Chlorofluorocarbons (CFCs) . Is CFC still used in India? Thanavat Junchaya, UNEP’s regional network coordinator for its CFC project, […]
What type of waves can the human eye detect?
What type of waves can the human eye detect? The human eye can detect the visible spectrum of the electromagnetic spectrum — a range of wavelengths between 390 to 700 nanometers. This is why scientists have always assumed that infrared light, a type of electromagnetic radiation with longer wavelengths than visible light, has been “invisible” […]
Why should you run towards a train?
Which lines must be parallel?
Which lines must be parallel? If two lines are cut by a transversal and corresponding angles are congruent, then the lines are parallel. Which line is a transversal? Definition: A line that cuts across two or more (usually parallel) lines. In the figure below, the line AB is a transversal. It cuts across the parallel […]
What do Venus Earth and Mars have in common?
What are the four elements of sound?
What are the four elements of sound? Since sound is a wave, it has all of the properties attributed to any wave, and these attributes are the four elements that define any and all sounds. They are the frequency, amplitude, wave form and duration, or in musical terms, pitch, dynamic, timbre (tone color), and duration. […]
What does the bottom of swimming pool or tank of water appears to be raised?
What does the bottom of swimming pool or tank of water appears to be raised? Answer. This is due to the refraction. This is because as the light rays transition and pass through the air-water interface, they get bent due to refraction. The light rays are bent away from the normal making us perceive the […]
Which volcanoes are sometimes very large with a gently sloping mound?
Which volcanoes are sometimes very large with a gently sloping mound? Composite, shield, cinder cones, and supervolcanoes are the main types of volcanoes. Composite volcanoes are tall, steep cones that produce explosive eruptions. Shield volcanoes form very large, gently sloped mounds from effusive eruptions. Can you swim in Crater Lake? Famous for its beautiful blue […]