What are the important sources of phosphorus?

1172

---

Give the chemical formula of Garnet?

1347

---

What is the element in third series the element with maximum oxidation state?

1107

---

What is ph? What are the units of ph?

1141

---

Name two elements, which are non-metallic in nature in 5th a group?

1199

---

How do we prepare diborane?

1214

---

Which other galaxy is similar to the milky way?

142

---

What are super galaxial nebulae?

124

---

Which was the vehicle used for the first landing on the moon?

101

---

Why stars are seen in colours?

137

---

What are galaxies?

116

---

Which was the first space rocket to hit the moon?

143

---

What is heavenly ganges ( milky way ) galaxy?

128

---

The time taken by aryabhatta for one revolution around the earth?

125

---

How many stars are there, which are normally visible?

105

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