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From: arpit_trikhaReply 1 of 6Reply
Subject: Contributed Answer/Explanation to Q. 45
   
   Duralumin: It is light, tough, ductile and resistant to corrosion.

Posted at: Thu Aug 5 12:49:23 2010 (GMT)

From: emma94Reply 2 of 6Reply
Subject: Contributed Answer/Explanation to Q. 8
   
   
   We know that ammonia is a base and so when ammonia gas is bubbled it turns
   red litmus to blue.

Posted at: Tue Sep 28 09:21:08 2010 (GMT)

From: emma94Reply 3 of 6Reply         View replies (1)
Subject: Contributed Answer/Explanation to Q. 28
   
   
   We know that ammonia is used in large scale preparation.As, in Haber's
   Process ammonia is the end product and helps in large scale preparation.

Posted at: Tue Sep 28 09:23:37 2010 (GMT)

From: emma94Reply 4 of 6Reply
Subject: Contributed Answer/Explanation to Q. 28
   
   
   We know that ammonia is used in large scale preparation.As, in Haber's
   Process ammonia is the end product, it helps in large scale preparation. 

Posted at: Tue Sep 28 09:24:04 2010 (GMT)

From: emma94Reply 5 of 6Reply
Subject: Contributed Answer/Explanation to Q. 30
   
   
   TEMPERATURE: 450-500 C.
   
   
   PROMOTER: Molybdenum.
   
   
   CATALYST: Finely divided iron.

Posted at: Tue Sep 28 09:25:47 2010 (GMT)

From: emma94Reply 6 of 6Reply
Subject: Contributed Answer/Explanation to Q. 44
   
   An alloy is a homogeneous mixture consisting of two or more metals or
   non-metals.The alloy is important to get some important properties of metals
   and non-metals.

Posted at: Tue Sep 28 09:28:42 2010 (GMT)

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