Question:
The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is ___.
Answer:
Cineole
Question:
Zone refining is used for the purification of ___.
Answer:
Ge
Question:
The method that cannot be used for removing permanent hardness of water is ___.
Answer:
Boiling,filtering and distillati
Question:
The mass of one Avogadro number of helium atom is ___.
Answer:
4.00 gram
Question:
The number of waves in n x 10th Bohr's orbit are ___.
Answer:
n
