KERALA PSC / CHEMISTRY / GLASSES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY / NOTES

 

KERALA PSC / CHEMISTRY / GLASSES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY / NOTES

KERALA PSC / CHEMISTRY / GLASSES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY / NOTES

·      Glass is a super cooled liquid

Ø The major ingredients of glass are sand, lime and soda ash

Ø Borax increases the hardness and refractory character of glass

·      Safety glass (manufactured by pasting a weightless plastic sheet in between two glass plates) is used in manufacture of bullet proof screens, wind shields etc…

·      Fibre glass is also used for insulating stoves and refrigerators

·      It is also used for making the body of aircrafts, boast, helmets etc…

·      Metal oxides provides colour to the glass. Eg: Cobalt salt provides blue colour, Nickel salt provides red colour etc….

 

KERALA PSC / CHEMISTRY / GLASSES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY / NOTES