a) 14 elements in the sixth period ( at.no. = 90 to 103) that are filling 4f sub-level
6%
b) 14 elements in the seventh period ( At.no=90 to 103) that are filling 5f sub-level
65%
c) 14 elements in the sixth period ( At. No =58 to 71) that are filling 4f sub-level
9%
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 ... ..
24%
a) Stainless steel
50%
b) Nickel-chromium steel
24%
c) Cast iron
3%
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]
15%
a) Na
26%
b) Mg
37%
c) Hg
22%
d) Sn
Q.4.
Which one of the following does not decolourise an acidified KMnO4 solution? [ Roorkee 1990]
18%
a) SO2
18%
b) FeCl2
39%
c) H2O2
25%
d) FeSO4
Q.5.
The main reason for large number of oxidation state exhibited by the actinoids than the corresponding lathanoids is ...
24%
a) more energy difference between 5f and 6d-orbitals than between 4f and 5d-orbitals
48%
b) lesser energy difference between 5f and 6d-orbitals than between 4f and 5d-orbitaks
20%
c) large atomic size of actinoids than the lanthanoids
8%
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]
21%
a) Cr3+
29%
b) V3+
18%
c) Ti3+
32%
d) Mn3+
Q.7.
Zn gives H2 gas with H2SO4 and HCl but not with HNO3 because
38%
a) Zn acts as an oxidising agent when react with HNO3
28%
b) HNO3 is weaker acid than H2SO4
10%
c) iin electrochemical series Zn is above hydrogen
24%
d) NO3- ion is reduced in perference to hydronium ion
Q.8.
Which alloy contains Cu and Zn? ..[ IIT 1993]
40%
a) Bronze
10%
b) Solder
43%
c) Gun metal
7%
d) Type metal
Q.9.
Which of following radioactive elements in Lanthanodies.
36%
a) Promethium (Pm)
29%
b) Lutetium (Lu)
29%
c) Yetterbium (Yb)
7%
d) Samarium (Sm)
Q.10.
General electronic configuration of lanthanides are [ AIPMT 2002]
36%
a) (n-2)f1-14(n-1)s2p6d0-1ns2
12%
b) (n-2)f10-14(n-1) d0-1ns2
44%
c) (n-2)f0-14(n-1) d10ns2
8%
d) (n-2) d0-1 (n-1)f1-14 ns2
Q.11.
Lanthanoids and actinoids resembles in .... ..
30%
a) electronic configuration
26%
b) oxidation state
11%
c) ionisation energy
33%
d) formation of complex
Q.12.
Zinc cannot displace the following ions from their aqueous solutions: [ Roorkee 1994]
25%
a) Ag+
33%
b) Cu2+
25%
c) Fe2+
17%
d) Na+
Q.13.
Which one of the following elements shows maximum number of different oxidation states in its compounds? [ AIPMT 1998]
14%
a) Eu
38%
b) La
38%
c) Gd
10%
d) Am
Q.14.
Colour in transition metal compounds is attrbuted to ... ..
0%
a) small sized metal ions
12%
b) absorption of light in the UV region
4%
c) complete ns-subshell
83%
d) d-d transition
Q.15.
Which does not give a precipitate with excess of NaOH? [ KCET 1997]
13%
a) HgCl2
30%
b) HgNO3
39%
c) FeSO4
17%
d) ZnSO4
Q.16.
Platinum black is ...
11%
a) platinum metal mixed with CoO2
16%
b) reduction of platinum tetrachloride with glucose
37%
c) platinum metal coated with black colour
37%
d) all of the above
Q.17.
Stainless steel contains iron and …[ AIPMT 1995]
11%
a) Cr + Ni
26%
b) Cr + Zn
37%
c) Zn + Pb
26%
d) Fe + Cr + Ni
Q.18.
A hard and resistant alloy generally used in tip of nib of pen is ... ..
29%
a) Os, Ir
18%
b) Pt, Cr
35%
c) V, Fe
18%
d) Fe, Cr
Q.19.
Addition of high proportions of manganese makes steel useful in making rails of rail orads becuaaaase manganese
27%
a) Gives hardness to steel and can remove oxygen and sulphure
27%
b) Helps the formation of oxides of iron
40%
c) Can show highest oxidation state of +7
7%
d) None of the above
Q.20.
Which of the following elements have some atomic radii ?
11%
a) Mn, Fe, Co, Cu
44%
b) Cr, Mn, Fe, Cu
28%
c) Cr, Mn, Fe, Co
17%
d) Mn, Fe, Cu, Ni
Q.21.
When CuSO4 is electrolysed using platinum electrodes? [ AIPMT 1993]
31%
a) Copper is liberated at cathode, sulphur at anode
31%
b) Copper is liberated at cathode, oxygen at anode
25%
c) Sulphur is liberated at cathode, oxygen at anode
12%
d) Oxygen is liberated at cathode, copper at anode
Q.22.
Which of the following statements about the interstitial compounds is incorrect?
47%
a) They are chemically reactive
29%
b) They are much harder than the pure metal
12%
c) They have higher melting points than the pure metal
12%
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]
23%
a) The ionic size of Ln(III) decreases in general with increasing atomic number
23%
b) Ln(III) compounds are generally colourless
23%
c) Ln(III) hydroxides are mainly basic in character
31%
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 ?
6%
a) Melting points of transition elements are high.
24%
b) Some ions of transition elements possesses paramagetic properties.
53%
c) All transition elements dissolves in acid.
18%
d) Transition elements processes various oxidation state.
Q.25.
Elements of group 11 and 12 are …
12%
a) Normal elements
29%
b) transition elements
35%
c) Alkaline earth metals
24%
d) Alkali metals
Q.26.
Auric chloride on reaction with ferrous sulphate changes to … [ Roorkee 1993]
7%
a) Au
21%
b) AuCl
21%
c) Au2SO4
50%
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)
12%
a) V3+
25%
b) Cr3+
19%
c) Ti3+
44%
d) Sc3+
Q.28.
In the reaction 3Zn + 2NH3 → X + 3HWhat is X ?
0%
a) N2ZnO2
27%
b) Zn (NO3)2
7%
c) N2ZnO4
67%
d) Zn3N2
Q.29.
Copper sulphate dissolves in excess of KCN to give …[ AIPMT 2006]
20%
a) CuCN
33%
b) [Cu(CN)4]3-
40%
c) [Cu(CN)4]2-
7%
d) Cu(CN)2
Q.30.
The metal that does not displace hydrogen from an acid is
50%
a) Hg
12%
b) Zn
25%
c) Al
12%
d) Ca
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.