What is density of a liquid?

597

---

Why is acetic acid added?

613

---

What is si unit of viscosity-coefficient?

618

---

Mention a few application of cod test in environmental engineering practice.

736

---

How is brass solution prepared?

661

---

Give the principle of potentiometer titration.

570

---

What are the products formed after cod analysis?

831

---

Why is sulphuric acid added during the preparation of standard fas solution?

579

---

Why is the indicator eriochrome black(ebt) shows wine red color at the beginning and blue color at the end?

933

---

Give the others form of iron ore.

590

---

What is meant by ph of a solution?

589

---

State beer-lambert’s law.

655

---

Why is estimation of copper done at 620 nm wave length?

945

---

Which of the above conductivity measured during conductometric titration?

570

---

What is the min constitutes of haematite ore?

577

---