The colour of solution obtained by adding excess of KI in the solution of HgCl is …[ PET 1990]
40%
a) Organce
20%
b) Brown
20%
c) Red
20%
d) Colourless
Q.2.
Permanent magnets are generally made of alloys of ... ..
0%
a) Co
60%
b) Zn
20%
c) Sb
20%
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]
0%
a) Slag
25%
b) gangue
25%
c) metallic calcium
50%
d) Calcium carbonate
Q.4.
The inner transition elements are the elements in which the added electrons go to
0%
a) (n-1) d-orbitals
80%
b) (n-2) f-orbitals
20%
c) (n-1) d-orbitals and (n-1) f-orbitals
0%
d) (n-1) d-orbitals and ns-orbitals
Q.5.
The formula of haematite is … [ MLNR 1994]
17%
a) Fe3O4
50%
b) Fe2O3
17%
c) FeCO3
17%
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]
0%
a) Ce(IV) acts as an oxidant
75%
b) The +3 oxidation state of Ce is more stable than +4 oxidation state
25%
c) The +4 oxidation state of Ce is not known in solution state
0%
d) The common oxidation states of Ce are +3 and +4
Q.7.
In comparison to ferrous salts, ferric salts are…
20%
a) More stable
40%
b) Less stable
20%
c) Equally stable
20%
d) None of these
Q.8.
Which of the following statements is not correct? [ AIPMT 2001]
29%
a) La(OH)3 is less basic then Li(OH)3
57%
b) In lathanide series, ionic radius of Ln3+ decreases.
0%
c) La is actually an element of transition series rather lanthanide
14%
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 ..
33%
a) Tin
33%
b) Zinc
0%
c) Mercury
33%
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]
25%
a) Na, H2, NaOH, Zn
50%
b) K, H2, KOH, Al
25%
c) CaH2, Ca(OH)2, Sn
0%
d) CaC2, C2H2, Ca(OH)2, Fe
Q.11.
Which of ion can not show d-d transition ? (Gujarat-2007)
40%
a) Ti4+
20%
b) Cr3+
20%
c) Mn2+
20%
d) Cu2+
Q.12.
Iron is obtained on large scale from haematite ( Fe2O3) …[ IIT 2000]
17%
a) By reduction
17%
b) By oxidation
50%
c) By reduction followed by oxidation
17%
d) By oxidation followed by reduction
Q.13.
Group 11 and IB elements are commonly known as ..
0%
a) Coinage metals
50%
b) Transition metals
25%
c) Typical elements
25%
d) Representative elements
Q.14.
From a solution of CuSO4, the metal used to recover copper is …[ PET 1992]
0%
a) Na
25%
b) Ag
50%
c) Hg
25%
d) Fe
Q.15.
HgCl2 and I2 both when dissolved in water containing I- ions the pair of species formed is
25%
a) HgI2, I3-
25%
b) HgI2, I-
25%
c) HgI42-, I3-
25%
d) Hg2I2, I-
Q.16.
Which of the following is correct?
20%
a) Calomel is mercuric chloride
0%
b) Calomel is widely used as an antiseptic
40%
c) Calomel is used medically as purgative
40%
d) Calomel is freely soluble in water
Q.17.
Which compound does bot dissolve in hot, dil HNO3 ? [ IIT 1996]
0%
a) HgS
0%
b) PbS
100%
c) CuS
0%
d) CdS
Q.18.
Which match is incorrect?
0%
a) Ammonia soda process – manufacture of potassium carbonate
0%
b) Bessemer process – manufacture of steel
25%
c) Mac arther and Forest process – extraction of silver
75%
d) Dow’s process – manufacture of phenol
Q.19.
Anhydrous CuCl2 and CuBr2 exist as ..[ CET Punjab 94]
0%
a) Monomer
50%
b) Dimer
0%
c) Trimer
50%
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?
25%
a) Vanadium (Z=23)
0%
b) Chromium (Z=24)
50%
c) Iron (Z=26)
25%
d) Manganese (Z=25)
Q.21.
Which of the following factors may be regarded s the main cause for lanthanoid contraction? [ AIEEE 2005]
0%
a) Poor shielding of one of 4f-electrons by another in the subshell
20%
b) Effective shielding of one of 4f-electron by another in the subshell
20%
c) Poor shielding of 5d-electrons by 4f-electrons
60%
d) Poor shielding of 4f-electrons by 5d-electrons
Q.22.
The 3d-transition series contains elements from atomic number ... ..
20%
a) 22 to 30
40%
b) 21 to 30
20%
c) 21 to 31
20%
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]
20%
a) Ce2+
20%
b) Sm2+
40%
c) Eu2+
20%
d) Yb2+
Q.24.
Percentage of gold in 21.6 carat gold is
50%
a) 21.6
25%
b) 90
25%
c) 10
0%
d) 70
Q.25.
Schweitzer’s reagent used for dissolving cellulose in the manufacture of artificial silk is … [ Roorkee 1999]
0%
a) CuSO4. 5H2O
0%
b) CuI
50%
c) Cu(NH3)4SO4
50%
d) Cu(CH3COO)2 . Cu(OH)2
Q.26.
Which compound is used as a purgative in medicine?
50%
a) HgCl2
25%
b) Hg2Cl2
0%
c) CuCl
25%
d) CuCl2
Q.27.
Chemical name of corrosive sublimate is …[ Roorkee 1992]
0%
a) Mercurous chloride
0%
b) Zinc chloride
100%
c) Mercuric chloride
0%
d) Aluminium chloride
Q.28.
Chromium has most stable oxidation state of ... ..
0%
a) +5
17%
b) +3
50%
c) +2
33%
d) +4
Q.29.
Anhydrous ferric chloride is prepared by … [ IIT 2002]
50%
a) Heating hydrated ferric chloride at a high temperature in a steam of air
0%
b) Heating metallic iron in a stream of dry chlorine gas
25%
c) Reaction of ferric oxide with hydrochloric acid
25%
d) Reaction of metallic iron with hydrochloric acid
Q.30.
Actinides … [ AIPMT 1994]
20%
a) Are all synthetic elements
60%
b) Include element 104
0%
c) Have any short lived isotopes
20%
d) Have variable valency
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