Questions

Except pineapple remaining all three are types of apples.

Pineapple is what kind of apple isn't an apple.

The F1, F2 to F12 keys that are found on the top row of most computer keyboards are called as Function Keys. Unless you've witnessed the evolution of computers from their early days, you probably don't know why they were invented and for what.
Function keys were used by various computer programs to fulfill various functions.

F12 - It is used by many web browsers to open the developer tools.

It rises on the Amarkantak plateau in the in the Maikal Range from a spring at a height of 1060m

“I have a general inclination to stand for the rights of humans. Maybe that is why they elected me as the college President of Students’ Union . I have studied Law for 4 years; I have matured a keen interest in Intellectual Property and would love to try the field in corporate law. I am additionally an articulate and assertive spokesperson. Having said that, I believe I have the keenness to practice law , skill set, and proper attitude and mold a career for myself.”

Channel of communication : It is a floe of communication within a department.

Skipper : This term is used for the status of a room, which indicates that a guest has left the hotel room without arranging to settle his or her account. 

Sundry Services :These are the extra services, which are provided to the guests. For e.g. message, handling of guests.

In a chemical reaction, substances (elements or compounds) called reactants are changed into other substances (compounds or elements) called products. Hence, reactants are those which start the chemical reaction.

For example:

1. In the burning of natural gas, methane (CH4) and oxygen (O2) are the reactants in the chemical reaction. are the substances formed by a chemical reaction. In the burning of natural gas, carbon dioxide (CO2) and water (H2O) are the products formed by the reaction.

2. H2+O2 ----> H2O

Here H2 & O2 are called Reactants and H2O is called Product.