Why does a diamond cut glass?

2 Answers  

---

What s the difference between hard and soft coal ?

1 Answers  

---

Explain the Matter?

1 Answers  

---

Define what is oxidation and reduction reaction?

0 Answers  

---

Explain about Characters of Catalytic Reactions ?

1 Answers  

---

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 suudenly heatd, it cracks. Why?????????

3 Answers  

---

Explain the Physical change?

1 Answers  

---

Distinguish between lime water and milk of lime ?

1 Answers   Brilliant,

---

Why is the bottom of a kettle blackened and top polished?

1 Answers  

---

Explain about Oxide ?

1 Answers  

---

What is the difference between fractionation and distillation?

0 Answers  

---

What is Liquation ?

1 Answers  

---