Chemistry F.Sc

Q: If ?H value is less than zero than reaction will be

(a) :  Exothermic
(b) :  Endothermic
(c) :  May or may not be Exothormic or Endothermic
(d) :  All of the above
(e) :  None
Answer:  Exothermic
Explanation:  

Q: In the priodic table, elements are arranged and classified into s,p,d & f block on the basis of their

(a) :  increasing atomic weight
(b) :  electro-negativity
(c) :  chemical activtiy
(d) :  electronic configuration
(e) :  None
Answer:  electronic configuration
Explanation:  

Q: Ethylene diamine is tetra-acetic acid (E.D.T.A) is classified as

(a) :  mono-dentate ligand
(b) :  bidentate ligand
(c) :  tri-dentate ligand
(d) :  poly dentate ligand
(e) :  None
Answer:  poly dentate ligand
Explanation:  

Q: Which of the following processes has always ?H = -ve

(a) :  formation of compound
(b) :  combustion
(c) :  dissolution of ionic compound
(d) :  dilution of a solution
(e) :  None
Answer:  combustion
Explanation:  

Q: All of the following are electromagnetic radiations except

(a) :  red light
(b) :  sound waves
(c) :  x-rays
(d) :  photon
(e) :  none of these
Answer:  sound waves
Explanation:  

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