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7.49 

Disproportionation is a chemical reaction typically a redox reaction where a molecule is transformed into two or more dissimilar products.

On heating, orthophosphorus acid (H₃PO₃) disproportionate to give orthophosphoric acid (H₃PO₄)

and phosphine (PH₃). The oxidation states of Phosphorous in various species involved in the reaction are mentioned below.

Yes, there are university and colleges in Srinagar that offers an MBA apart from Cluster University as well. The fees, eligibility and selection criteria can vary from one college to another. Mentioned below are some of the Best MBA Colleges in Srinagar:

• NIT Srinagar
• Kashmir University
• Islamia College of Science and Commerce
• Cluster University
• Craft Development Institute
• Iqbal Insitute of Technology and Management
• IIM Jammu
• The Business School, University of Jammu, etc.

The common elements present in anode mud in electrolytic refining are antimony, selenium, tellurium, silver, gold, and platinum. These elements being less reactive, are not affected by CuSO₄ + H₂SO₄ solution and hence settle down under anode as anode mud.

At 673K, the value of G _{(CO, Co2)} is less than that of G _{(C, Co)}. Therefore, CO can be reduced more easily to CO₂ than C to CO. hence; CO is a better reducing agent than C at 673K.

Candidates can apply for the preferred course on the official website of Chettinad Institute of Technology. Aspirants have to register with basic details to login and fill out the application form. Below are the steps to follow for Chettinad Institute of Technology application process:

Step 1: Visit the official website of Chettinad Institute of Technology.

Step 2: Click on 'Apply Now' on the Home page.

Step 3: Register with the basic details to generate login credentials.

Step 4: Login to fill out the application form and upload the documents.

Step 5: Pay the application fee to submit the form.

7.13

The Gibbs free energy formation ( Δ_fG) of Cu₂S is less than that of H₂S and CS₂. Therefore, H₂ and C cannot reduce Cu₂S to Cu.

On the other hand, the Gibbs free energy formation of Cu₂O is greater than that of CO. hence, C can reduce Cu₂O to Cu.

C (s) + Cu₂O (s) → 2Cu (s) + CO (g)

Hence, the extraction of copper from its pyrite ore is difficult than from its oxide ore through reduction.

In the froth floatation method, the role of depressants is to prevent certain types of particles from forming the froth with the air bubbles. For example, NaCN is used as a depressant to separate lead sulfide ore (PbS) from zinc Sulphide ore (ZnS).NaCN forms a zinc complex Na₂ [Zn (CN)₄] on the surface of ZnS thereby preventing it from the formation of froth.

Copper can be extracted by hydrometallurgy but not zinc as per the below-given reason:

The E^o of zinc ( Zn²⁺/Zn = - 0.76V) is lower than that of copper (Cu²⁺/Cu = 0.34V). this means that zinc is a stronger reducing agent and can displace copper from a solution of Cu²⁺ ions.

Zn (s) + Cu²⁺ (aq) → Zn²⁺ + Cu (s)

In order to displace zinc by hydrometallurgy, we need stronger reducing agent like K ( E^o_K+/K = - 2.93V)

2K (s) + 2H₂O (l) → 2KOH (aq) + H₂ (g)

As a result, these metals cannot be used in hydrometallurgy to extract zinc. Hence, copper can be

extracted by hydrometallurgy but not zinc.

Dr. C.V. Raman University Bihar offers BSc courses for the duration of three to four years. Only the BSc in Agriculture is offered for four years; the rest of the BSc specialisations are offered for three years. The university offers a total of seven specialisations in BSc courses; the names of the specialisations are as follows:
BSc Agriculture

• BSc (Hons) Physics
• BSc (Hons) Chemistry 
• BSc (Hons) Mathematics
• BSc (Hons) Biology
• BSc (Hons) Botany 
• BSc (Hons) Zoology 
• BSc Biotechnology

7.46

Nitrogen owing to its small size has a tendency to form p – p multiple bonds with itself. Nitrogen thus forms a very stable diatomic molecule, N₂.

On moving down, a group, the tendency to form p–p bonds decreases [because of the large size of heavier elements]. With the increase in the size of atoms, the strength p– p bonds decreases.

Thus p– p bonds are weaker for heavier atoms. Therefore, phosphorus [like other heavier metals] exists in the P₄ state, as shown below.

The university may follow the rules of Higher Education Department, Srinagar for MBA seat allotment procedure. The university may also consider the J&K undergraduate seat allocation system for the allotment in the constituent and affiliated colleges. There are 40 seats for the iMBA. It must be noted that the given seat intake is as per the official website/ sanctioning body. It is still subject to changes and hence, is indicative.

Candidates seeking admission at Chettinad Institute of Technology have to meet the eligibility requirements. Candidates need to complete Class 12 with relevant subjects to get admission in the institute. CIT has not specified the minimum aggregate required to join the institute. However, 60% is a decent score and aspirants can get admission in the institute with this score.

Below 1683K, the melting point of silicon, the Δ _fG^o curve for the formation of SiO₂ lies above the Δ _fG^o curve for MgO, so, at temperature below 1683 K, Mg can reduce SiO₂. On the other hand, above 1683 K, the Δ_fG^o curve for MgO lies above Δ_fG^o curve for SiO₂. Hence, at a temperature above 1683 K, Si can reduce MgO to Mg.

Various students have provided Navrachana University reviews on Shiksha.com. Based on some recently posted reviews, the university placed approximately 89% of its students. Over 500 companies participated in the placement drives and offered more than 600 job roles. The highest CTC was INR 34.6 LPA, the lowest was INR 4.40 LPA. The average CTC was INR 10.17 LPA. Some of the top recruiting companies were Paypal, Alembic,  MRF, Morris Garage Motors, TCS, Zydus, ICICI Bank, HDFC Bank, and Kotak Bank.