Chemistry D-Blocks Elements

1. The element which contain partially filled inner orbital are called:

a) s-block elements
b) p-blocks elements
c) d-block elements
d) alkali metals
2. The first transition element present in first series of d-block is:

a) Scandium
b) Zinc
c) Chromium
d) Nickel
3. Transition elements from complexes readily because of:

a) Small size
b) Vacant d-orbital
c) Large nuclear charge
d) All of the above
4. Transition elements are often paramagnetic because of:

a) The presence of vacant orbital
b) The presence of unpaired electrons
c) Malleability
d) None of these
5. Iron obtained from blast furnace is known as:

a) Cast iron
b) Wrought iron
c) Pig iron
d) Steel
6. Bessemer's converter is used in the manufacture of:

a) Cast iron
b) Pig iron
c) Wrought iron
d) Steel
7. Which of the following statement is false:

a) Rusting of iron can be prevented by CO2
b) Rusting of iron takes place in moist air
c) Rusting of iron is an electrochemical process
d) Rusting of iron produce hydrated ferric oxide
8. The colour of Fe+2 is:

a) Blue
b) Light green
c) Yellow
d) Brown
9. d-block elements generally form:

a) Covalent hydrides
b) Complex hydrates
c) Interstitial hydrides
d) Salt like hydrates
10. The substances added to the ores to remove the impurities are called:

a) Flux
b) Catalyst
c) Gangue
d) Slag
11. The chief ore of copper is:

a) Cupric
b) Malachite
c) Azurite
d) Copper pyrite
12. The process of extracting a metal from which in pure form from its ore is known as:

a) Metallurgy
b) Extraction
c) Smelting
d) Roasting
13. A compound of a metal from which a metal can be extracted economically is called:

a) Mineral
b) Ore
c) Alloy
d) Gangue
14. The undesirable impurities in the mineral are called:

a) Flux
b) Gangue
c) Slag
d) Alloy
15. Which of the following does not belong to d-block elements:

a) Cu
b) Cr
c) Co
d) Ca
16. One of the most important ways of protection of a metal from corrision is:

a) Alloying
b) Electroplating
c) Galvanizing
d) Coating with non-metallic material
17. Photographic films and plates have and essential coating of:

a) Silver nitrate
b) Sodium bromide
c) Silver bromide
d) None of these
18. Which species does not act as ligands in the formation of complexes

a) CH3NH2
b) NH4
c) CL-
d) OH-
19. NH3 and water are _____ ligands:

a) Mono-denate
b) Bi-dentate
c) Mono-dentate and neutral
d) None of the above
20. Stain-less steel is an alloy of:

a) Fe, Cr, and Ni
b) Fe, Cu, Ni
c) Fe, Mg, and Ni
d) Fe, Ca, Ni
21. Potassium permagnate is _____ in color:

a) Deep green
b) Deep purple
c) Deep yellow
d) Light pink
22. Potassium dichromate is used as:

a) An oxidizing agent
b) Reducing agent
c) Dehydrating agent
d) Catalyst
23. The d-block elements are also called as:

a) Inner transition elements
b) Outer transition elements
c) Lanthanides series
d) Inert gases
24. Second series of d-block elements starts from:

a) Scandium
b) Yttrium
c) Lanthanium
d) Cadmium
25. The transition metal complex irons are coloured except those of:

a) Cu
b) Ni
c) Mn
d) Zn
26. EDTA is:

a) Ethylene di-amine tri-acetate
b) Ethyl di-amine tetra-acetate
c) Ethyl di-amine tetra acid
d) Ethyl di-amine tetra-acetate
27. In naming a complex ion, the name of _____ are written first:

a) Neutral ligand
b) Negative ligand
c) Metal
d) None of these
28. Which is most reactive metal:

a) Fe
b) Pt
c) Ni
d) Co
29. The matter is an impure substance of:

a) Iron
b) Aluminum
c) Copper
d) Zinc
30. Which of the following element has highest electrical conductivity:

a) Zn
b) Cu
c) Fe
d) Ag
31. The method used in the concentration of Cu ore is:

a) Gravity separation method
b) Froth floating method
c) Amalgamation process
d) All the above
32. The empty space between atoms of transition metals in their crystal lattices are called:

a) Vacant spaces
b) Valance spaces
c) Interstitial spaces
d) None of the above
33. Ligands are:

a) Electron pain donors
b) Electron pair acceptor
c) Neutral species
d) None of the above
34. The name of ____ are usually unchanged:

a) Anionic ligands
b) Cationic ligands
c) Neutral ligands
d) None of these
35. Suffix "ate" at the end of the name of coordinating complex ion represents:

a) Cat-ion
b) Anion
c) Cathode
d) Anode
 
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