d & f block Elements-II Chemistry Test Series IIT JEE

Test Preparation on d & f block Elements-II-Chemistry Test Series IIT JEE-2020

1.

Zinc can be coated on iron to produce galvanized iron but thereverse is not possible. It is because-

1Zinc has higher negative electrode potential than iron
2Zinc is lighter than iron
3Zinc has lower melting point than iron
4Zinc has lower negative electrode potential than iron

Zn has higher negative SRP (Standard reduction potential)
so it work as anode and protect iron to make iron as
cathode.

2.

Which one of the following organization’s iron and steel plant
was built to use charcoal as a source of power, to start with, but
later switched over to hydroelectricity

1The Tata Iron and Steel Company
2The Indian Iron and Steel Company
3Mysore Iron and Steel Limited
4Hindustan Steel Limited

It is the Tata iron and steel company.

3.

Photographic films and plates have an essential ingredient of

1Silver nitrate
2Silver bromide
3Sodium chloride
4Oleic acid

AgBr is most sensitive to light and undergoes
photochemical reduction.
2
2AgBr ¾L¾ig¾ht_________2Ag + Br

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