Chemistry

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.

Higher is the stability of carbocation, greater is the reactivity towards SN1.

Therefore, Correct order of reactivity towards SN1 reaction is

Ranitidine, cimetidine and magnesium hydroxide are antacids.

Serotonin is a tranquilizers.

Correct order of reducing character is

NH₃< PH₃< AsH₃< SbH₃< BiH₃

It may vary, depending on the type of substance you are talking about. Some can have their carcinogenic/toxic levels reduced and some may not. Some processes involve detoxification, overheating, altering the chemical structure etc. You can also yourself avoid exposure to these substances by adopting healthy lifestyle habits like jogging, yoga, exercising, sports, meditation etc. and staying away from cigarettes, alcohol, tobacco and others.

Kindly go thorugh the solution

Calamine->ZnCO₃