Why does table salt, NaCl, some times appear yellow in colour?

HCl in the solution provides Cl ions. This increases the ionic product in NaCl and so the solid NaCl starts separating out.

NaCl is not hygroscopic but impurities like MgSO4 , CaSO4, MgCl2 and CaCl2, present in it are hygroscopic and absorb moisture from air.

(c) For number between 600 to 700 : Number of 6 at the units place = 10 Number of 6 at the tens place = 10 Number of 6 at the hundredth place...

(b) According to question R = y and y = 2G ∴ R = 2G Hence, the number of red balls is double the number of green balls.

(c) The term ‘Jana’ occurs 275 times in the Rigveda. But Janapada is not mentioned. The term Rajya occurs only once.

Light green is the Colour of crystalline FeSO4.7H2O. Light green changes to reddish brown or brown upon heating. (i) FeSO4.7H2O+heat → FeSO4+7H2O (ii) 2FeSO4+heat → Fe2O3+SO2+SO3

He started the story of the tusker by giving a prologue in which he called elephants  ‘huge well-fed beasts.’ He said that after escaping from the timber yard, the elephant...

FeSO4.7H2O is green in colour and loses water of crystallisation when it is heated. It is then decomposed to Fe3O, (brown coloured), SO2 and SO3   FeSO4.7H2O + Heat→ FeSO4 + 7H2O 2FeSO4  (s)+Heat → FeSO4 +SO2(g) +SO3(g)

(i) some of the anionic sites are occupied by an unpaired electron. (iv) F-centres are created which impart colour to the crystals.

<table) <caption>Colors</caption) <tr> <th>red</th> <th>green</th> <th>blue</tl> <th>orange</th) <th>cyan</th> </tr> <tr) <td bgcolor="red" width="100" height="50"></td> <td bgcolor="green" width="100" height="50"></td> <td bgcolor="blue" width="100" hei ght="50"></td> <td bgcolor="orange" width="100" hei ght="50"></td> . <td bgcolor="cyan" width="100" height="50"></td> </tr> </table>