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WorksheetsThermal analysis
Total questions: 10
Worksheet time: 5mins
Thermal analysis is defined as
Measurement of concentration of materials as a function of temperature
Measurement of physical properties as a function of temperature
Measurement of solubility of materials as a function of temperature
Measurement of line positions of crystals as a function of temperature
Which are the following factor that affects Thermogravimetric Analysis (TGA)
I. Furnace atmosphere
II. Heating rate
III. Weight of the sample taken
IV. Particle size of the sample
I, II, III
II, III, IV
I, II, IV
I, III, IV
What are the two main techniques for thermal analysis?
TGA AND DTA
MSP AND FCT
FTG AND DGG
TSA AND DGF
In thermogravimetric analysis, the result obtained appear as a
Continuous chart
Continuous parabola
Continuous circular positions
Discontinuous chart
TGA, DTA and DSC are measured using different instruments.
true
false
In the application of DTA and DSC which of the following parameters is measured for the glasses?
Concentration of the glass
Transition temperature
Cooling temperature
Solubility of the glass
The horizontal portion in the curve indicates
Absorbed water molecules
No change in temperature
Decomposition of the samples
No weight change
Differential scanning calorimetry (DSC) can be used to determine which of the following properties of a semicrystalline polymer sample?
i. The melting temperature
ii. The crystallization temperature
iii. The degree of crystallinity
i and ii
i and iii
ii and iii
i, ii and iii
Which of the following is suitable for TGA and DTA?
TGA measures only weight while DTA measures other effects.
TGA and DTA only measure weight.
TGA measures only temperature while DTA measures other effects.
TGA and DTA measure only temperature.
If sample weight is recorded as a function of time at a constant temperature, then the technique is called
Differential Thermogravimetry
Isothermal Thermogravimetry
Dynamic Thermogravimetry
Differential Thermogravimetry
