181. Which of the following is highly corrosive salt ?

1. 1. FeCl₂

   
   
   

   2. HgCl₂

   
   
   

   3. PbCl₂

   
   
   

   4. Hg₂Cl₂

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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182. Match the following
     

     	List-I		List-II
     F.	AI	1.	Haematite
     G.	Ag	2.	Cryolite
     H.	Fe	3.	Cassiterite
     J.	Iron	4.	Argentite

     Codes :

     	F	G	H	J
     A.	2	4	3	1
     B.	3	2	1	4
     C.	4	2	1	3
     D.	2	3	4	1

1. 1. A.

   
   
   

   2. B.

   
   
   

   3. C.

   
   
   

   4. D.

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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183. Ni is purified by

1. 1. Mond process

   
   
   

   2. Zone refining process

   
   
   

   3. Nan-arkel process

   
   
   

   4. none

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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184. Malachite is a mineral of

1. 1. Mg

   
   
   

   2. Cu

   
   
   

   3. Al

   
   
   

   4. Fe

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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185. Calamine is an ore of

1. 1. Ag

   
   
   

   2. Cu

   
   
   

   3. Fe

   
   
   

   4. Zn

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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