Q.1
Oxidation state of Hg in alagam is ... ..
  • a) zero
  • b) one
  • c) two
  • d) three
Q.2
Magnetic moment 2.84 BM is given by (At.No Ni =Ti=22, Cr=24, Co=27) .. [ AIPMT 2014]
  • a) Ni2+
  • b) Ti3+
  • c) Cr3+
  • d) Co2+
Q.3
Lanthanoids and actinoids resembles in ... ..
  • a) electronic configuration
  • b) oxidation state
  • c) ioonisation energy
  • 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]
  • a) Nitrogen
  • b) Oxygen
  • c) CO2
  • d) Ar
Q.5
Which of the following does not represent the correct order of the properties indicated? [ AIMPT 1997]
  • a) Ni2+ > Cr2+ > Fe2+ > Mn2+ (size)
  • b) Sc > Ti > Cr > Mn (size)
  • c) Mn2+ > Ni 2+ Co2+ > Fe 2+ ( unpaired electron)
  • d) Fe2+ > Co 2+ > Ni 2+ > u2+ ( unpaired electron)
Q.6
Which statement about Hg is correct?
  • a) Hg is the only liquid metal
  • b) Hg2+ salts are more stable than Hg22+ salts
  • c) Hg forms no amalgam with iron and platinum
  • 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]
  • a) CrO
  • b) Cr2O3
  • c) Cr
  • d) CrO(O)2
Q.8
The general electronic configuration of transition elements is ... ..
  • a) (n-1) d1-5
  • b) (n-1) d1-10 ns1
  • c) (n-1) d1-10 ns0-2
  • 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
  • a) Assertion and Reason both are correct and Reason is correct explanation to Assertion
  • b) Assertion and Reason both are correct and Reason is not correct explanation to Assertion
  • c) Assertion is correct but reason is wrong
  • d) Assertion is wrong but reason is correct
Q.10
The formula of mercurous ion is
  • a) Hg+
  • b) Hg2+
  • c) Hg22+
  • 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 ... ..
  • a) 2
  • b) 4
  • c) 5
  • d) 3
Q.12
When copper is heated with conc. HNO3 it produces … [ NEET 2016 ]
  • a) Cu(NO3)2 and NO
  • b) Cu(NO3)2, NO and NO2
  • c) Cu(NO3)2 and N2O
  • d) Cu(NO3)2, and NO
Q.13
Platinum metal can be dissolved in ..
  • a) Hot concentrated hydrochloric acid
  • b) Hot concentrated nitric aciss
  • c) Hot dilute sulphuric acid
  • d) A mixture of hydrochloric and nitric acids
Q.14
Which of the following may be considered to be an organometallic compound? [ AIMPMT 1996]
  • a) Nickel tetracarbonyl
  • b) Chlorophyll
  • c) K3[Fe(C2O4)3]
  • d) [Co(en)3]Cl3
Q.15
The pair of metals which can dissolves iin NaOH(aq) is
  • a) Al, Cu
  • b) Zn, Cd
  • c) Pb, Sn
  • 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]
  • a) A colourless filtrate and a green residue
  • b) A yellow filtrate and a green residue
  • c) A yellow filtrate and a brown residue
  • d) A green filtrate and a brown residue
Q.17
What is the equivalent weight of KMnO4 when it is converted in MnSO4?
  • a) M/6
  • b) M/2
  • c) M/5
  • d) M/3
Q.18
In haemoglobin the iron shows oxidation state …[ KCET 1991]
  • a) +2
  • b) +3
  • c) +1
  • d) +4
Q.19
Which of the following is a lanthanoid?
  • a) Ta
  • b) Rh
  • c) Th
  • d) Lu
Q.20
The correct order of ionic radii of Y3+ , La3+, Eu3+, and Lu3+ is :
  • a) Y3+ < La3+ < Eu3+ < Lu3+
  • b) Y3+ < Lu3+ < Eu3+ < La3+
  • c) Lu3+ < Eu3+ < La3+ < Y3+
  • 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]
  • a) [Xe] 4f8 6d2
  • b) [Xe] 4f9 5s1
  • c) [Xe] 4f7 5d1 6s2
  • d) [Xe] 4f6 5d2 6s2
Q.22
Which is not true? HgCl2 reacts with NH3(g) to give [Hg(NH3)4]Cl2
  • a) ZnS is white solid which turns yellow on exposure to light
  • b) ZnS is precipitated on passing H22ZnO2
  • c) Basic zinc carbonate is ZnCO3. 3Zn(OH)2
  • d)
Q.23
The highest magnetic mment for transition metals exists for
  • a) 3d9
  • b) 3d7
  • c) 3d5
  • d) 3d3
Q.24
Black HgS dissolves in ...
  • a) conc. HCl on boiling
  • b) boiling HCl + a crystal of KClO3
  • c) NaOH
  • d) All of these
Q.25
A transition element X has a configuration [ Ar]3d4 in its +3 oxidation state. Its atomic number is
  • a) 25
  • b) 26
  • c) 22
  • d) 19
Q.26
Identify the alloy containing a non-metal as a constituent in it … [ AIPMT 2012]
  • a) Invar
  • b) Steel
  • c) Bell-metal
  • d) Bronze
Q.27
The impurity of sulphure makes the iron
  • a) Fibrous
  • b) Red short
  • c) Cold short
  • d) Malleable
Q.28
By passing H2S gas in acidified KMnO4 solution, we get [ AIPMT 1995]
  • a) S
  • b) K2S
  • c) MnO2
  • d) K2SO3
Q.29
“Mercury” tree can be prepared
  • a) By mixing uo mercuric thiocyanate and gum
  • b) By adding Nessle’s reagent to ammonium salt solution
  • c) By pouring little mercury into AgNO3 solution
  • d) By heating mercuric chloride
Q.30
Ferrous sulphate on heating gives …[ Roorkee 1998]
  • a) SO3
  • b) SO2
  • c) Fe2O3
  • d) All of these
0 h : 0 m : 1 s