Please wait...
/
-
The protection of steel by chrome plating is due to
The chrome plating process is a method of applying a thin layer of chromium onto a substrate (metal or alloy) through an electroplating procedure. In simple terms, electroplating is achieved by passing an electric current between two electrodes which are immersed in an electrolyte bath comprising of chromic acid.
As the main process, that is electroplating occurs at cathode, so it is called cathodic protection.
What do you call the effect of the splitting of a spectral line into several components in the presence of a static magnetic field?
● Zeeman effect of the splitting of a spectral line into several components in the presence of a static magnetic field.
● It is very important in applications such as nuclear magnetic resonance spectroscopy, electron spin resonance spectroscopy, magnetic resonance imaging and Mossbauer spectroscopy.
● Askaryan effect is the coherent electromagnetic radiation from high-energy cascades in dense media with a collective charge.
● It was first observed experimentally in 2000.
● A domino effect is the cumulative effect produced when one event sets off a chain of similar events.
● It is best known as a mechanical effect and is used as an analogy to a falling row of dominoes.
Which of following structure transports water through the stem of the plant?
• The xylem tissue transports water and minerals from the roots to the leaves.
• Xylem tissue has tracheids and vessel elements. Phloem tissue has companion cells and sieve tubes.
• This results in more water being pulled from the root.
• The phloem tissue transports food from the leaves to the other parts of the plant.
If a base dissolves in water by, what name is it better known?
Alkali, any of the soluble hydroxides of the alkali metals—i.e., lithium, sodium, potassium, rubidium, and cerium. Alkalis are strong bases that turn litmus paper from red to blue; they react with acids to yield neutral salts; and they are caustic and in concentrated form are corrosive to organic tissues.
Which device automatically disconnects supply if current exceeds normal value?
* Circuit breaker is a device that instantly breaks an electric circuit to prevent serious harm from an ongoing electric shock. * It is designed to protect the electric circuit from damage caused by excess current due to short circuit or overload.
The concept of electromagnetic waves was introduced by ____.
* The concept of electromagnetic waves was introduced by Maxwell.
* Electromagnetic radiation consists of electromagnetic waves, which are synchronized oscillations of electric and magnetic fields that propagate at the speed of light.
The force exerted by a magnet is an example of ___________.
Ishihara Test is used for the diagnosis of which disease?
• Ishihara Test is used for the diagnosis of Colour-Blindness in people.
• It is a color perception test.
• Color-blindness is the inability to distinguish the differences between certain colors which is an inherited condition that affects males more frequently than females.
Collagen is a type of _______
● Collagen is a type of protein.
● It is the main structural protein in the extracellular matrix found in the body's various connective tissues.
● It is a protein responsible for healthy joints and skin elasticity or stretchiness.
● Proteins are essential nutrients for the human body.
● They are one of the building blocks of body tissue and can also serve as a fuel source.
● Carbohydrates are the main source of energy for the body and they are mainly found in plant foods.
What changes happens when a high current flow through battery?
• An increase in the current will increase the rate at which the conductor absorbs energy, therefore heats it more strongly.
• Power dissipation in a wire (P) =I2R.
• Resistance is constant. So, if you increase double the current your wire will emit four times the heat.
Correct (-)
Wrong (-)
Skipped (-)