Q.1
Lanthanides are …[ AIMPT 2004]
  • a) 14 elements in the sixth period ( at.no. = 90 to 103) that are filling 4f sub-level
  • b) 14 elements in the seventh period ( At.no=90 to 103) that are filling 5f sub-level
  • c) 14 elements in the sixth period ( At. No =58 to 71) that are filling 4f sub-level
  • d) 14 elements in the seventh period ( At. No = 58 to 71) that are filling 4f sub-level
Q.2
Automobile engine blocks are made up of ... ..
  • a) Stainless steel
  • b) Nickel-chromium steel
  • c) Cast iron
  • d) Wrought iron
Q.3
For making good quality mirrors, plates of float glasses are used. These are obtained by floating molten glass over a liquid metal which does not solidify before glass. The metal can be…[ AIEEE 2003]
  • a) Na
  • b) Mg
  • c) Hg
  • d) Sn
Q.4
Which one of the following does not decolourise an acidified KMnO4 solution? [ Roorkee 1990]
  • a) SO2
  • b) FeCl2
  • c) H2O2
  • d) FeSO4
Q.5
The main reason for large number of oxidation state exhibited by the actinoids than the corresponding lathanoids is ...
  • a) more energy difference between 5f and 6d-orbitals than between 4f and 5d-orbitals
  • b) lesser energy difference between 5f and 6d-orbitals than between 4f and 5d-orbitaks
  • c) large atomic size of actinoids than the lanthanoids
  • d) greater reactive nature of the actinoids than the lanthanoids
Q.6
Which one of the following ions is the most stable in aqueous solution? (At. No, Ti=22, V=23, Cr=24, Mn=25)[ AIMPT2007]
  • a) Cr3+
  • b) V3+
  • c) Ti3+
  • d) Mn3+
Q.7
Zn gives H2 gas with H2SO4 and HCl but not with HNO3 because
  • a) Zn acts as an oxidising agent when react with HNO3
  • b) HNO3 is weaker acid than H2SO4
  • c) iin electrochemical series Zn is above hydrogen
  • d) NO3- ion is reduced in perference to hydronium ion
Q.8
Which alloy contains Cu and Zn? ..[ IIT 1993]
  • a) Bronze
  • b) Solder
  • c) Gun metal
  • d) Type metal
Q.9
Which of following radioactive elements in Lanthanodies.
  • a) Promethium (Pm)
  • b) Lutetium (Lu)
  • c) Yetterbium (Yb)
  • d) Samarium (Sm)
Q.10
General electronic configuration of lanthanides are [ AIPMT 2002]
  • a) (n-2)f1-14(n-1)s2p6d0-1ns2
  • b) (n-2)f10-14(n-1) d0-1ns2
  • c) (n-2)f0-14(n-1) d10ns2
  • d) (n-2) d0-1 (n-1)f1-14 ns2
Q.11
Lanthanoids and actinoids resembles in .... ..
  • a) electronic configuration
  • b) oxidation state
  • c) ionisation energy
  • d) formation of complex
Q.12
Zinc cannot displace the following ions from their aqueous solutions: [ Roorkee 1994]
  • a) Ag+
  • b) Cu2+
  • c) Fe2+
  • d) Na+
Q.13
Which one of the following elements shows maximum number of different oxidation states in its compounds? [ AIPMT 1998]
  • a) Eu
  • b) La
  • c) Gd
  • d) Am
Q.14
Colour in transition metal compounds is attrbuted to ... ..
  • a) small sized metal ions
  • b) absorption of light in the UV region
  • c) complete ns-subshell
  • d) d-d transition
Q.15
Which does not give a precipitate with excess of NaOH? [ KCET 1997]
  • a) HgCl2
  • b) HgNO3
  • c) FeSO4
  • d) ZnSO4
Q.16
Platinum black is ...
  • a) platinum metal mixed with CoO2
  • b) reduction of platinum tetrachloride with glucose
  • c) platinum metal coated with black colour
  • d) all of the above
Q.17
Stainless steel contains iron and …[ AIPMT 1995]
  • a) Cr + Ni
  • b) Cr + Zn
  • c) Zn + Pb
  • d) Fe + Cr + Ni
Q.18
A hard and resistant alloy generally used in tip of nib of pen is ... ..
  • a) Os, Ir
  • b) Pt, Cr
  • c) V, Fe
  • d) Fe, Cr
Q.19
Addition of high proportions of manganese makes steel useful in making rails of rail orads becuaaaase manganese
  • a) Gives hardness to steel and can remove oxygen and sulphure
  • b) Helps the formation of oxides of iron
  • c) Can show highest oxidation state of +7
  • d) None of the above
Q.20
Which of the following elements have some atomic radii ?
  • a) Mn, Fe, Co, Cu
  • b) Cr, Mn, Fe, Cu
  • c) Cr, Mn, Fe, Co
  • d) Mn, Fe, Cu, Ni
Q.21
When CuSO4 is electrolysed using platinum electrodes? [ AIPMT 1993]
  • a) Copper is liberated at cathode, sulphur at anode
  • b) Copper is liberated at cathode, oxygen at anode
  • c) Sulphur is liberated at cathode, oxygen at anode
  • d) Oxygen is liberated at cathode, copper at anode
Q.22
Which of the following statements about the interstitial compounds is incorrect?
  • a) They are chemically reactive
  • b) They are much harder than the pure metal
  • c) They have higher melting points than the pure metal
  • d) They retain metallic conductivity
Q.23
Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statements is incorrect? [ AIEEE 2009]
  • a) The ionic size of Ln(III) decreases in general with increasing atomic number
  • b) Ln(III) compounds are generally colourless
  • c) Ln(III) hydroxides are mainly basic in character
  • d) Because of the large size of the Ln(III) ions the bonding in its compounds is predominantly ionic in character
Q.24
Which of the following does not relevant with transition elements ?
  • a) Melting points of transition elements are high.
  • b) Some ions of transition elements possesses paramagetic properties.
  • c) All transition elements dissolves in acid.
  • d) Transition elements processes various oxidation state.
Q.25
Elements of group 11 and 12 are …
  • a) Normal elements
  • b) transition elements
  • c) Alkaline earth metals
  • d) Alkali metals
Q.26
Auric chloride on reaction with ferrous sulphate changes to … [ Roorkee 1993]
  • a) Au
  • b) AuCl
  • c) Au2SO4
  • d) Au3(SO4)2
Q.27
Which one of the following forms a colourless solution in aqueous medium? ( At.no Sc=21, Ti = 22, V=23, Cr=24)
  • a) V3+
  • b) Cr3+
  • c) Ti3+
  • d) Sc3+
Q.28
In the reaction 3Zn + 2NH3 → X + 3HWhat is X ?
  • a) N2ZnO2
  • b) Zn (NO3)2
  • c) N2ZnO4
  • d) Zn3N2
Q.29
Copper sulphate dissolves in excess of KCN to give …[ AIPMT 2006]
  • a) CuCN
  • b) [Cu(CN)4]3-
  • c) [Cu(CN)4]2-
  • d) Cu(CN)2
Q.30
The metal that does not displace hydrogen from an acid is
  • a) Hg
  • b) Zn
  • c) Al
  • d) Ca
0 h : 0 m : 1 s