Questions

It refers to a forecast regarding the future trend of a particular company, economic segment, Commodity or stock market exchange. Market outlooks are based upon past performance, prevailing economic factors, consumer demand and opinion.It is also called market forecast.

'Rare earth'(They are all metals)

Now a days, printers we are using are called as laser printers. The speed of a laser printer is measured in PPM i.e, Pages Per Minute. 

Laser printing is an electrostatic digital printing process. It produces high-quality text and graphics by repeatedly passing a laser beam back and forth over a negatively charged cylinder called a "drum" to define a differentially charged image.

Compared to inkjet printers which use ink for printing laser printers are more expensive as they use toner which lasts for long.

Lithium is the lightest of all the metals due to its low atomic number among meetals