Magnetic moment 2.84 BM is given by (At.No Ni =Ti=22, Cr=24, Co=27) .. [ AIPMT 2014]
40%
a) Ni2+
30%
b) Ti3+
30%
c) Cr3+
0%
d) Co2+
Q.3.
Lanthanoids and actinoids resembles in ... ..
56%
a) electronic configuration
11%
b) oxidation state
22%
c) ioonisation energy
11%
d) formation of complex
Q.4.
Native silver metal forms a water soluble complex with a dilute aqueous solution of NaCN in presence of …[ IIT 2008]
12%
a) Nitrogen
75%
b) Oxygen
12%
c) CO2
0%
d) Ar
Q.5.
Which of the following does not represent the correct order of the properties indicated? [ AIMPT 1997]
43%
a) Ni2+ > Cr2+ > Fe2+ > Mn2+ (size)
14%
b) Sc > Ti > Cr > Mn (size)
43%
c) Mn2+ > Ni 2+ Co2+ > Fe 2+ ( unpaired electron)
0%
d) Fe2+ > Co 2+ > Ni 2+ > u2+ ( unpaired electron)
Q.6.
Which statement about Hg is correct?
25%
a) Hg is the only liquid metal
0%
b) Hg2+ salts are more stable than Hg22+ salts
12%
c) Hg forms no amalgam with iron and platinum
62%
d) All of the above
Q.7.
Ammonium dichromate is used in some fire works. The green coloured powder blown in air is … [ IIT 1997]
20%
a) CrO
60%
b) Cr2O3
20%
c) Cr
0%
d) CrO(O)2
Q.8.
The general electronic configuration of transition elements is ... ..
12%
a) (n-1) d1-5
12%
b) (n-1) d1-10 ns1
75%
c) (n-1) d1-10 ns0-2
0%
d) noe of these
Q.9.
Assertion: To a solution of potassium chromate if a strong acid is added it changes its colour from yellow to orange. Reason: The colour changes due to the oxidation of potassium chromate
17%
a) Assertion and Reason both are correct and Reason is correct explanation to Assertion
33%
b) Assertion and Reason both are correct and Reason is not correct explanation to Assertion
50%
c) Assertion is correct but reason is wrong
0%
d) Assertion is wrong but reason is correct
Q.10.
The formula of mercurous ion is
29%
a) Hg+
29%
b) Hg2+
29%
c) Hg22+
14%
d) None of these
Q.11.
A compound of metal ion Mx+ (Z= 24) has a spin only meagetic moment of √15 Bohr Magnetons. The number of unpaired electrons in the compound are ... ..
0%
a) 2
0%
b) 4
33%
c) 5
67%
d) 3
Q.12.
When copper is heated with conc. HNO3 it produces … [ NEET 2016 ]
20%
a) Cu(NO3)2 and NO
20%
b) Cu(NO3)2, NO and NO2
40%
c) Cu(NO3)2 and N2O
20%
d) Cu(NO3)2, and NO
Q.13.
Platinum metal can be dissolved in ..
0%
a) Hot concentrated hydrochloric acid
0%
b) Hot concentrated nitric aciss
0%
c) Hot dilute sulphuric acid
100%
d) A mixture of hydrochloric and nitric acids
Q.14.
Which of the following may be considered to be an organometallic compound? [ AIMPMT 1996]
17%
a) Nickel tetracarbonyl
33%
b) Chlorophyll
33%
c) K3[Fe(C2O4)3]
17%
d) [Co(en)3]Cl3
Q.15.
The pair of metals which can dissolves iin NaOH(aq) is
0%
a) Al, Cu
0%
b) Zn, Cd
0%
c) Pb, Sn
100%
d) Zn, Al
Q.16.
An aqueous solution of FeSO4, Al2(SO4)3 And chrome alum is heated with excess of Na2O2 and filtered. The material obtained are … [ IIT 1996]
20%
a) A colourless filtrate and a green residue
20%
b) A yellow filtrate and a green residue
60%
c) A yellow filtrate and a brown residue
0%
d) A green filtrate and a brown residue
Q.17.
What is the equivalent weight of KMnO4 when it is converted in MnSO4?
0%
a) M/6
50%
b) M/2
17%
c) M/5
33%
d) M/3
Q.18.
In haemoglobin the iron shows oxidation state …[ KCET 1991]
50%
a) +2
17%
b) +3
0%
c) +1
33%
d) +4
Q.19.
Which of the following is a lanthanoid?
0%
a) Ta
0%
b) Rh
40%
c) Th
60%
d) Lu
Q.20.
The correct order of ionic radii of Y3+ , La3+, Eu3+, and Lu3+ is :
0%
a) Y3+ < La3+ < Eu3+ < Lu3+
25%
b) Y3+ < Lu3+ < Eu3+ < La3+
50%
c) Lu3+ < Eu3+ < La3+ < Y3+
25%
d) La3+ < Eu3+ < Lu3+ < Y3+
Q.21.
Gadolinium belong to 4f series. Its atomic number isWhich of the following is the correct electron configuration of gadolinium? [ AIMPT 2015]
0%
a) [Xe] 4f8 6d2
50%
b) [Xe] 4f9 5s1
25%
c) [Xe] 4f7 5d1 6s2
25%
d) [Xe] 4f6 5d2 6s2
Q.22.
Which is not true? HgCl2 reacts with NH3(g) to give [Hg(NH3)4]Cl2
0%
a) ZnS is white solid which turns yellow on exposure to light
0%
b) ZnS is precipitated on passing H22ZnO2
100%
c) Basic zinc carbonate is ZnCO3. 3Zn(OH)2
0%
d)
Q.23.
The highest magnetic mment for transition metals exists for
0%
a) 3d9
0%
b) 3d7
100%
c) 3d5
0%
d) 3d3
Q.24.
Black HgS dissolves in ...
33%
a) conc. HCl on boiling
0%
b) boiling HCl + a crystal of KClO3
0%
c) NaOH
67%
d) All of these
Q.25.
A transition element X has a configuration [ Ar]3d4 in its +3 oxidation state. Its atomic number is
0%
a) 25
0%
b) 26
100%
c) 22
0%
d) 19
Q.26.
Identify the alloy containing a non-metal as a constituent in it … [ AIPMT 2012]
0%
a) Invar
40%
b) Steel
60%
c) Bell-metal
0%
d) Bronze
Q.27.
The impurity of sulphure makes the iron
33%
a) Fibrous
0%
b) Red short
33%
c) Cold short
33%
d) Malleable
Q.28.
By passing H2S gas in acidified KMnO4 solution, we get [ AIPMT 1995]
25%
a) S
0%
b) K2S
50%
c) MnO2
25%
d) K2SO3
Q.29.
“Mercury” tree can be prepared
33%
a) By mixing uo mercuric thiocyanate and gum
33%
b) By adding Nessle’s reagent to ammonium salt solution
0%
c) By pouring little mercury into AgNO3 solution
33%
d) By heating mercuric chloride
Q.30.
Ferrous sulphate on heating gives …[ Roorkee 1998]
25%
a) SO3
0%
b) SO2
50%
c) Fe2O3
25%
d) All of these
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