Entri Career Fest- Up to 50% Off on In-demand Courses ✦ 12,000 Government Jobs Secured ✦ 5,000+ Private Job Placements ✦ 4.9 ⭐️ Google Play Store Rating✦ +++

Get Ahead with Our Exam Q&A

Explore our extensive collection of questions and answers to enhance your learning experience and prepare for exams effectively

Fractional distillation is a type of distillation which involves the separation of miscible liquids.
The process involves repeated distillations and condensations and the mixture is usually separated into component parts.
The separation happens when the mixture is heated at a certain temperature where fractions of the mixture start to vaporize.
The basic principle of this type of distillation is that different liquids boil and evaporate at different temperatures. So when the mixture is heated, the substance with lower boiling point starts to boil first and convert into vapours.

Steam Distillation is a separation process for temperature sensitive substances. It is a particular type of distillation. It is a method for separating miscible liquid base depending upon their volatilities. For instance aromatic compounds. It plays a vital role in some industrial regions. Here no chemical reaction takes place. It is a physical process.

Corrosion is a process through which metals in manufactured states return to their natural oxidation states.
This process is a reduction-oxidation reaction in which the metal is being oxidized by its surroundings, often the oxygen in air.
Rusting is the formation of iron oxides, is a well-known example of electrochemical corrosion.

These elements form coloured compounds and ions.
Many paramagnetic compounds are formed by these elements, because of the unpaired electrons in the d orbital.
These elements have a large ratio of charge to the radius.
Transition metals tend to be hard and they have relatively high densities when compared to other elements.
The boiling points and the melting points of these elements are high, due to the participation of the delocalized d electrons in metallic bonding.
This metallic bonding of the delocalized d electrons also causes the transition elements to be good conductors of electricity.

Oxides are binary compounds formed by the reaction of oxygen with other elements. Oxygen is highly reactive in nature. They react with metals and non-metal to form oxides. Metal Oxides have an oxidation number of -2 and generally comprise of an oxygen anion.

Ba, Cu and Pb shows +2 oxidation state, for silver the important oxidation state in all of its compounds is +1.

Radial node is a spherical surface where the probability of finding an electron is zero.
The equation for finding radial node is n-l-1.
Angular node is a plane that passing through the nucleus. Angular node is equal to the azimuthal quantum number (l).
In a 4f orbital, the principal quantum number is 4 and the angular quantum number is 3 (n=4,l=3).
Therefore, the number of angular nodes present in 3.
Here, the value of n will be 4. This means there will be no radial nodes present in 4f orbital.

? faraday discovered electromagnetic induction

The process of inducing an emf in a conductor when ever the magnetic flux linked with it changes is known as electromagnetic induction.

? Generators works on the principle of Mutual induction

Gamma rays are ionizing electromagnetic radiation, obtained by the decay of an atomic nucleus. Gamma rays are more penetrating in matter and can damage living cells to a great extent. Gamma rays are used in medicine (radiotherapy), industry (sterilization and disinfection) and the nuclear industry.

A neutral solution is a solution that has a pH of 7. It is neither acidic (pH < 7) nor basic (pH > 7).

An example of a neutral solution is either a sodium chloride solution or a sugar solution. A neutral solution has a pH equal to 7. Water is another common substance that is neutral on the pH scale. A substance is an acid if it is above 0 but less than 7. A subsatance is a base if it is above 7 but less than 14.

Tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. Tungsten is a rare metal found naturally on earth almost exclusively as compounds with other elements.

The melting point and resistivity of Tungsten are very high. At high temperatures, it does not burn quite well. The temperature of the electric lamps is extremely high. Hence, tungsten is mainly used as the heating element of electric bulbs.

Get Expert Advice for Free: Register for Your Free Consultation Now!

Full Name

Phone Number

Select Language

Select Course

[honeypot honeypot-100]