Q.1
The colour of solution obtained by adding excess of KI in the solution of HgCl is …[ PET 1990]
  • a) Organce
  • b) Brown
  • c) Red
  • d) Colourless
Q.2
Permanent magnets are generally made of alloys of ... ..
  • a) Co
  • b) Zn
  • c) Sb
  • d) Pb
Q.3
In the metallurgy of iron, when limestone is added to the blast furnace, the calcium ion ends up as … [ KCET 1993]
  • a) Slag
  • b) gangue
  • c) metallic calcium
  • d) Calcium carbonate
Q.4
The inner transition elements are the elements in which the added electrons go to
  • a) (n-1) d-orbitals
  • b) (n-2) f-orbitals
  • c) (n-1) d-orbitals and (n-1) f-orbitals
  • d) (n-1) d-orbitals and ns-orbitals
Q.5
The formula of haematite is … [ MLNR 1994]
  • a) Fe3O4
  • b) Fe2O3
  • c) FeCO3
  • d) FeS2
Q.6
Cerium (Z=58) is an important member of the lanthanoids. Which of the following statements about it is correct? [ AIEEE 2004]
  • a) Ce(IV) acts as an oxidant
  • b) The +3 oxidation state of Ce is more stable than +4 oxidation state
  • c) The +4 oxidation state of Ce is not known in solution state
  • d) The common oxidation states of Ce are +3 and +4
Q.7
In comparison to ferrous salts, ferric salts are…
  • a) More stable
  • b) Less stable
  • c) Equally stable
  • d) None of these
Q.8
Which of the following statements is not correct? [ AIPMT 2001]
  • a) La(OH)3 is less basic then Li(OH)3
  • b) In lathanide series, ionic radius of Ln3+ decreases.
  • c) La is actually an element of transition series rather lanthanide
  • d) Atomic radius of Zr and Hf are same because of lanthanide contraction
Q.9
From sodium argentocyanide Na[Ag(CN)2], silver is precipitated by adding a powder of ..
  • a) Tin
  • b) Zinc
  • c) Mercury
  • d) Calcium
Q.10
When a substance A react with water it produces a combustible gas B and a solution of substance C in water. When another substance D reacts wiiith this solution C, it also produce the same gas B on worming but D can also produce gas B on reaction with dilute sulphuric acid at room temperature, A imparts a deep golden yellow colour to a smokeless flame of Bunsen burner. A, B, C and D respectively are ..[ AIPMT 1998]
  • a) Na, H2, NaOH, Zn
  • b) K, H2, KOH, Al
  • c) CaH2, Ca(OH)2, Sn
  • d) CaC2, C2H2, Ca(OH)2, Fe
Q.11
Which of ion can not show d-d transition ? (Gujarat-2007)
  • a) Ti4+
  • b) Cr3+
  • c) Mn2+
  • d) Cu2+
Q.12
Iron is obtained on large scale from haematite ( Fe2O3) …[ IIT 2000]
  • a) By reduction
  • b) By oxidation
  • c) By reduction followed by oxidation
  • d) By oxidation followed by reduction
Q.13
Group 11 and IB elements are commonly known as ..
  • a) Coinage metals
  • b) Transition metals
  • c) Typical elements
  • d) Representative elements
Q.14
From a solution of CuSO4, the metal used to recover copper is …[ PET 1992]
  • a) Na
  • b) Ag
  • c) Hg
  • d) Fe
Q.15
HgCl2 and I2 both when dissolved in water containing I- ions the pair of species formed is
  • a) HgI2, I3-
  • b) HgI2, I-
  • c) HgI42-, I3-
  • d) Hg2I2, I-
Q.16
Which of the following is correct?
  • a) Calomel is mercuric chloride
  • b) Calomel is widely used as an antiseptic
  • c) Calomel is used medically as purgative
  • d) Calomel is freely soluble in water
Q.17
Which compound does bot dissolve in hot, dil HNO3 ? [ IIT 1996]
  • a) HgS
  • b) PbS
  • c) CuS
  • d) CdS
Q.18
Which match is incorrect?
  • a) Ammonia soda process – manufacture of potassium carbonate
  • b) Bessemer process – manufacture of steel
  • c) Mac arther and Forest process – extraction of silver
  • d) Dow’s process – manufacture of phenol
Q.19
Anhydrous CuCl2 and CuBr2 exist as ..[ CET Punjab 94]
  • a) Monomer
  • b) Dimer
  • c) Trimer
  • d) Polymer
Q.20
Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionization enthalpy?
  • a) Vanadium (Z=23)
  • b) Chromium (Z=24)
  • c) Iron (Z=26)
  • d) Manganese (Z=25)
Q.21
Which of the following factors may be regarded s the main cause for lanthanoid contraction? [ AIEEE 2005]
  • a) Poor shielding of one of 4f-electrons by another in the subshell
  • b) Effective shielding of one of 4f-electron by another in the subshell
  • c) Poor shielding of 5d-electrons by 4f-electrons
  • d) Poor shielding of 4f-electrons by 5d-electrons
Q.22
The 3d-transition series contains elements from atomic number ... ..
  • a) 22 to 30
  • b) 21 to 30
  • c) 21 to 31
  • d) 21 to 29
Q.23
Which of the following lanthanoid ions is diamagnetic? [At.no Ce=58, Sm=62, Eu=63, Yb=70][ NEET 2013]
  • a) Ce2+
  • b) Sm2+
  • c) Eu2+
  • d) Yb2+
Q.24
Percentage of gold in 21.6 carat gold is
  • a) 21.6
  • b) 90
  • c) 10
  • d) 70
Q.25
Schweitzer’s reagent used for dissolving cellulose in the manufacture of artificial silk is … [ Roorkee 1999]
  • a) CuSO4. 5H2O
  • b) CuI
  • c) Cu(NH3)4SO4
  • d) Cu(CH3COO)2 . Cu(OH)2
Q.26
Which compound is used as a purgative in medicine?
  • a) HgCl2
  • b) Hg2Cl2
  • c) CuCl
  • d) CuCl2
Q.27
Chemical name of corrosive sublimate is …[ Roorkee 1992]
  • a) Mercurous chloride
  • b) Zinc chloride
  • c) Mercuric chloride
  • d) Aluminium chloride
Q.28
Chromium has most stable oxidation state of ... ..
  • a) +5
  • b) +3
  • c) +2
  • d) +4
Q.29
Anhydrous ferric chloride is prepared by … [ IIT 2002]
  • a) Heating hydrated ferric chloride at a high temperature in a steam of air
  • b) Heating metallic iron in a stream of dry chlorine gas
  • c) Reaction of ferric oxide with hydrochloric acid
  • d) Reaction of metallic iron with hydrochloric acid
Q.30
Actinides … [ AIPMT 1994]
  • a) Are all synthetic elements
  • b) Include element 104
  • c) Have any short lived isotopes
  • d) Have variable valency
0 h : 0 m : 1 s