TRANSITION ELEMENTS

Q: f-block elements are also called:

(a) :  non-typical transition elements
(b) :  outer transition elements
(c) :  normal transition elements
(d) :  inner transition elements
(e) :  None of the Above
Answer:  inner transition elements
Explanation:  

Q: Which substance removes impurities from iron ore in the blast furnace?

(a) :  Carbon
(b) :  Limestone
(c) :  Sand
(d) :  Slang
(e) :  None of the Above
Answer:  Limestone
Explanation:  Limestone decomposes at the high temperature of the blast furnace to form calcium oxide that will combine with silicon dioxide impurity to form calcium silicate which is tapped off at the bottom of the furnace.

Q: The strength of binding energy of transition elements depends upon:

(a) :  number of electron pairs
(b) :  number of unpaired electrons
(c) :  number of neutrons
(d) :  number of protons
(e) :  None of the Above
Answer:  number of electron pairs
Explanation:  

Q: Dichromates are converted to chromates on adding

(a) :  acid
(b) :  base
(c) :  salt
(d) :  oxidizing agent
(e) :  None of the Above
Answer:  base
Explanation:  

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