Question

1.what are the composition of calclum and sode based greases?​

Answer 1

Answer:

Grease is a solid or semisolid lubricant formed as a dispersion of thickening agents in a liquid lubricant. Grease generally consists of a soap emulsified with mineral or vegetable oil.

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Answer 2

Answer:

If a user wants a quick view of the calendar in the Linux terminal, cal is the command for you. By default, the cal command shows the current month calendar as output. 

cal command is a calendar command in Linux which is used to see the calendar of a specific month or a whole year. 

Syntax: 

cal [ [ month ] year]

The rectangular bracket means it is optional, so if used without an option, it will display a calendar of the current month and year.  

cal : Shows current month calendar on the terminal with the current date highlighted.