What is the difference between air conditioning and refrigeration?

616

---

Name any four commonly used refrigerants.

720

---

Why are the titration involving edta carried out slowly towards the end point?

742

---

What is equivalent conductivity?

764

---

How does the viscosity vary with temperature?

592

---

What is pka of acid?

781

---

What are the constituents of cements?

604

---

How are the waters classified based on the degree of hardness?

651

---

How are ph and pka related?

630

---

Write the structural formula for edta.

631

---

Why is glass electrode called an ion selective electrode?

557

---

Why is starch indicator added towards the end point?

589

---

What is chemical oxygen demand?

597

---

What is colorimetry?

660

---

How is temporary hardness be removed?

621

---