Answer Posted / r.sanjeeverayan

Base is a substance whose pH is greater than 7.0 but a
nucleophile neednot to be a base i.e a nucleophile can be a
neutral molecule

eg CN(-) is a strong nucleophile but a neutral molecule.

What is the difference between fractionation and distillation?

1053

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Explain acid gas?

978

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What is the principle involved in conductometric titration?

1081

---

How does the viscosity vary with temperature?

1012

---

What is the monomer of polyethene?

1109

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How is the accuracy of the method determined?

1045

---

What is buffer?

1055

---

Why ph scale range is 14? Why it is not less or not greater than 14?

1143

---

What is the min constitutes of haematite ore?

992

---

What is the difference between volumetric solutions and test solutions

3111

---

How is the measurement of ph made?

993

---

State beer’s law.

941

---

How is hardness of water caused?

1067

---

When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason?? When a cool glass rod is suddenly heated, it cracks. Why?

967

---

what is the relation between Total organic carbon and Chemical Oxygen demand?

2850

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