In the Ge–P system, a compound GeP exists. At 725°C, Ge, GeP and liquid of 62 at.% P are in three-phase equilibrium. At 577°C, GeP, P and liquid of 94.5 at.% P are in equilibrium. The melting points of Ge and P are 937 and 593°C respectively. Draw an approximate phase diagram of this system. Write down the invariant reactions, giving their names.

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Candidates must have qualified in the GATE 2022 examination from one of the following disciplines in order to be eligible to apply for the advertised posts: i. Chemical Engineering (GATE 2022 code: CH) ii. Civil Engineering (GATE 2022 code: CE) iii. Computer Sc & Engineering (GATE 2022 code: CS) iv. Electrical Engineering (GATE 2022 code: EE) v. Instrumentation Engineering (GATE 2022 code: IN) vi. Mechanical Engineering (GATE 2022 code: ME) vii. Metallurgical Engineering (GATE 2022 code: MT) b. A candidate can apply in IOCL only in any one of the aforesaid disciplines. However, in order to apply, the candidate must have qualified GATE 2022 examination in the said discipline and also done his/her BE/B.Tech from the same discipline [including corresponding engineering disciplines mentioned in para 1.3] discipline in GATE 2022 For example: In case a candidate has qualified in GATE 2022 from 2 papers – say Electrical Engg and Instrumentation Engg – and has done BE/B.Tech in Instrumentation Engg, then the candidate can apply only in Instrumentation Engg and not in Electrical Engg for this recruitment. c. Qualifying in GATE 2022 from disciplines other than 07 (Seven) disciplines mentioned above shall not be accepted towards eligibility for the advertised post. d. GATE marks of previous years (GATE 2021 or before) shall also not be accepted.

r/R ratio shortcut BCC (B) and FCC (F)

This is the video which will show the trick to remember the r/R ratio of tetrahedral and octahedral voids in BCC and FCC.