What does the bubbling indicate?

What does the bubbling indicate? When substances are put in the same container like, CaCO3 and HCl . A reaction occurs and bubbles escape the container (effervescence). These bubbles are actually gas fumes, and this shows that a new gaseous product is formed. Here, bubbling indicates our chemical reaction. What are the bubbles that you […]

What cycle does a refrigerator work on?

What cycle does a refrigerator work on? Air cycle refrigeration works on Reversed Carnot cycle and Bell Coleman cycle. Air is compressed and then heat removed, this air is then expanded to a lower temperature than before it was compressed. . Where is refrigeration used? Refrigeration has many applications, including household refrigerators, industrial freezers, cryogenics, […]

What is a piece of cosmic debris on Earth called?

What is a piece of cosmic debris on Earth called? It also contains countless asteroids and comets – the debris of the cosmic construction site that created the planets and their moons. The majority of Solar System asteroids populate the main asteroid belt, lying between the orbit of Mars and Jupiter. How much space debris […]

Why metal is a conductor?

Why metal is a conductor? Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions. Are metals shiny? […]

Where do you stop hitting the cue ball?

Where do you stop hitting the cue ball? dead center How do you break perfectly in 8 ball pool? More videos on YouTube As shown below, a good power option for the 8-ball break is to position the CB slightly off center, and hit the lead ball squarely. As with the 10-ball break, the 2nd-row […]

How is DNA used to identify individuals?

How is DNA used to identify individuals? DNA fingerprinting is a chemical test that shows the genetic makeup of a person or other living things. It’s used as evidence in courts, to identify bodies, track down blood relatives, and to look for cures for disease. What are the steps of gel electrophoresis? There are several […]

What are the three main principles of usability testing?

What are the three main principles of usability testing? Main principles of usability testing are: defining the goal, hypothesis, research questions and creating scenarios accordingly. preparing requisites based on scenarios (prototypes – never waste time creating omnicapable prototype, these can be only worth it as design presentations for clients, but not for UTs. How do […]

What is the fastest instrument to learn?

What is the fastest instrument to learn? These are the 10 Easiest Musical Instruments to Learn for Adults over 50 The Recorder. The recorder is one of the easiest instruments to learn. The Lyre Harp. Harps come in many sizes and with various numbers of strings. Percussion Instruments. Bongos. Castanets. Drum Kit. Tambourine. Guitar. What […]

How a ring main is wired?

How a ring main is wired? The mains supply The power sockets in a house are connected by means of a ring circuit. In a ring circuit the live, neutral and earth wires form a loop of cable going from the consumer unit to all of the sockets in turn and then back to the […]

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