U4 T4 Thermal methods of analysis and Method validation

The highest temperature a TG furnace required to attend

• 1773 K

• 1273K

• 1313K

______ shaped crucible is prefered in thermal methods

• oval

• flat

• cup

Copper sulfate gets converted into copper oxide in a temperature range of ______ K

• 973-1113

• 473- 548K

• 671 - 751K

A peakindicating exothermic reaction is _____ the base line

• above
• below
• slope in

______ is a reference material for organic substances in DTA

• octyl pthalate
• α - alumina
• silicon carbide

Metallic sample holder gives _____ endothermic peak and _____ exothermic peak

• Sharp-flat
• flat-shrp
• wide-blurr

In DTA the results obtained in ______ gas atmosphere are more reliable.

• static
• dynamic
• inert

For crystalline polymers, transition occurs at about ____ dgree celcius

• 200
• 480
• 320

Single pan thermobalence is used in ______

• TGA
• DTA
• DSC

______ can determine composition of complex mixtures

• TGA
• DTA
• DTG