GATE MT 2013 Q52. Statement for Linked Answer Questions 52 and 53: The density and associated crystallinity for two polypropylene samples are as follows: Density of totally amorphous polypropylene is___.

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Askmemetallurgy Official

Asked: March 22, 20202020-03-22T04:20:12+05:30 2020-03-22T04:20:12+05:30In: Physical Metallurgy & Heat treatment

GATE MT 2013 Q52. Statement for Linked Answer Questions 52 and 53: The density and associated crystallinity for two polypropylene samples are as follows: Density of totally amorphous polypropylene is___.

Poll Results

0%(A) 0.64

0%(B) 0.74

25%(C) 0.84 ( 1 voter )

75%(D) 0.94 ( 3 voters )

Based On 4 Votes

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GATE MT 2013 Q52. Statement for Linked Answer Questions 52 and 53: The density and associated crystallinity for two polypropylene samples are as follows: Density of totally amorphous polypropylene is___.

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Askmemetallurgy Official · Accepted Answer · 2020-09-24T22:29:21+05:30

Correct answer is option D. %C= ρc (ρ- ρa)/(ρ (ρc- ρa)×100 0.5 = ρc (1.2- ρa)/1.2 (ρc- ρa)×100 0.8 = ρc (1.44- ρa)/1.44 (ρc- ρa)×100 On solving the above two equations, ρc= 1.66 and ρa= 0.94

Correct answer is option D.

%C= ρ_c (ρ– ρ_a)/(ρ (ρ_c– ρ_a)×100

0.5 = ρ_c (1.2- ρ_a)/1.2 (ρ_c– ρ_a)×100

0.8 = ρ_c (1.44- ρ_a)/1.44 (ρ_c– ρ_a)×100

On solving the above two equations,

ρ_{c= 1.66 and ρa= 0.94}

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GATE MT 2013 Q52. Statement for Linked Answer Questions 52 and 53: The density and associated crystallinity for two polypropylene samples are as follows: Density of totally amorphous polypropylene is___.

Poll Results

Participate in Poll, Choose Your Answer.

1 Answer

Arpita Samal

digbijaya igit

Rohit.km