JEE

There can't be a straightforward answer to this question. The salary package differs as per the experience, location and employer. In India, one can expect somewhere between Rs 10 Lacs to Rs 43.5 Lacs annual salary. In US, it can range between  $65,000 to $118,000.

No, admissions into IIT Kharagpur without the JEE entrance exam is not possible if the candidate wishes to take admission in the BTech course. For other course admissions, IIT Karagpur accepts other entrance exam scores. However, only candidates who fulfill the eligibility criteria for the BTech course on top of scoring a valid JEE score will be granted admissions into the IIT Kharagpur BTech course. 

In the medical entrance test NEET, there can be 1 to 3 questions from this chapter. Some year, the Chemistry section of NEET has only one question from this chapter and in some other years, there can be 3 questions.

The following are the key concepts of this chapter: Compound, Elements, Rules, Law of conservation of mass, Addition and Subtraction, Atomic Mass, Law of multiple proportions, and Molecular Mass.

As the name suggests, the first chapter of the NCERT Class 11 Chemistry introduces various basic concepts of chemistry, such as the definition and importance of chemistry, atomic matter and molecular masses, the mole concept, laws of chemical combination, empirical, stoichiometry, and molecular formulas. It also includes the concepts of molarity and molality.

The following are the real-world applications of electrochemistry - military applications such as thermal batteries, digital watches, hearing aids, digital cameras, electrical appliances such as cellphones, and torches.

It depends on students. Though it is not a tough chapter to study but for students who have misconceptions and those who struggle with visualization can find it challenging. 

There are two types of electrochemical cells - Electrolytic and Galvanic or Voltaic cells. The electrolytic cells need an external source such as AC power source or DC battery and it involve non-spontaneous reactions. The galvanic cells gets its energy from redox reactions which is spontaneous.

Redox reactions is the basic principle of the electrochemistry. The redox reactions is the process where electrons are transferred between substances. In this process chemical energy gets converted into electrical energy and vice versa.