How important are lights mirrors and lenses in our life? Mirrors and lenses both have the ability to reflect or refract light. This property has put mirrors and lenses in use for centuries. As of 2010, mirrors and lenses are so prevalent that most people use them every day, regardless of whether or not they […]
Which City Has Longest Day?
Which City Has Longest Day? To dodge any misunderstandings, Solstices are also known as June Solstice (Northern Solstice) and December Solstice (Southern Solstice). In India, Kolkata witnesses the longest day in the month of June (Summer Solstice in the Northern Hemisphere). Therefore, the correct answer is Option ‘B: Kolkata’. Which Tropic is the sun now? […]
What is science advantages and disadvantages?
What is science advantages and disadvantages? Science is not intrinsically good or bad. It is a way to acquire knowledge in a systematic way. The disadvantage of new mobile phones is too many can communicate with us all at the same time. Why study hard is important? When you study hard you will be developing […]
What do gas bubbles in lava form?
What do gas bubbles in lava form? Gas bubbles formed and rose to the surface of lava which flowed freely on the surface of a young Earth. As the lava gradually solidified to form rock, these bubbles were trapped inside, forming spaces inside the rock called vesicles. What makes some magma explosive? Explosive eruptions If […]
What is ecosystem and its services?
What is ecosystem and its services? Ecosystem services, outputs, conditions, or processes of natural systems that directly or indirectly benefit humans or enhance social welfare. For example, the pollination of crops provided by bees and other organisms contributes to food production and is thus considered an ecosystem service. Which of the following is the best […]
What are the 2 types of Autotrophs?
What are the 2 types of Autotrophs? Scientists classify autotrophs according to how they obtain their energy. Types of autotrophs include photoautotrophs, and chemoautotrophs. Where do Chemoautotrophs get their energy from? Chemoautotrophs are able to synthesize their own organic molecules from the fixation of carbon dioxide. These organisms are able to produce their own source […]
Why is there no chain reaction with u 238?
Why is there no chain reaction with u 238? However, it is fissionable by fast neutrons, and is fertile, meaning it can be transmuted to fissile plutonium-239. U cannot support a chain reaction because inelastic scattering reduces neutron energy below the range where fast fission of one or more next-generation nuclei is probable. Why U […]
What is octet rule in short?
How does a half moon look?
How does a half moon look? There’s no half-moon phase, at least not in any official way. Invariably, when referring to a half moon, observers are looking at a quarter moon. You see a moon that looks half-illuminated, like half a pie. Full moon signifies that the full visible surface of the moon – its […]
Is milk a pure?
Is milk a pure? Complete answer: As we know that the pure substances are either elements or compounds while the mixture is a resultant product of any two or more than two substances. Therefore milk is a mixture not a pure substance. Main compounds of milk are lactose and casein. How can we check pure […]