Among the following oxides, the one which is most basic is ..[CBSE PMT 1994]
0%
a) ZnO
67%
b) MgO
25%
c)Al2O3
8%
d)N2O5
Q.2.
White enamel of our teeth is ..[Bihar CET 1995]
67%
a) Ca3(PO4)2
8%
b) CaF2
25%
c) CaCl2
0%
d) CaBr2
Q.3.
Epsom salt is the hydrate of one of the following .. [CPMT 1990]
70%
a)Magnesium sulphate
10%
b) Ferrous ammonium sulphate
20%
c)Magnesium ammonium phosphate
0%
d)Calcium sulphate
Q.4.
The decreasing order of the second ionization potential of K, Ca, Ba is ...[ IIT 1993]
67%
a) K > Ca > Ba
22%
b) Ca > Ba > K
0%
c)Ba > K > Ca
11%
d)K > Ba > Ca
Q.5.
Among the metals Be, Mg, Ca and Sr of group 2 ( or group IIA) of the periodic table, the least ionic chloride would be formed by.. [ DEC 1994]
38%
a) Mg
62%
b) Be
0%
c)Ca
0%
d)Sr
Q.6.
The atomic numbers of four elements are given below. Which one is an alkaline earth metal ..[AMU 1992]
0%
a)10
67%
b) 20
33%
c)30
0%
d)40
Q.7.
Which of the following imparts brick red colour to the flame? [ AFMC 1994]
38%
a) Ca
38%
b) Ba
25%
c)Sr
0%
d)None of the above
Q.8.
Presence of which of the following slat increases the rate of setting of plaster of paris
50%
a)NaCl
0%
b) KCl
25%
c)BaSO4
25%
d)CuSO4
Q.9.
Sodium nitrate decomposes above 800°C to give ... [ IIT 1998]
22%
a)N2
11%
b) O2
33%
c)NO2
33%
d)Na3O
Q.10.
Which one of the following substance is used in laboratory for fast drying of neutral gases? .. [ CBSE PMT 1992]
25%
a)Phosphorous pentaoxide
25%
b) Active charcoal
50%
c)Anhydrous calcium chloride
0%
d)Na3PO4
Q.11.
To a clear solution of compound (X), a solution of BaCl2 is added and a heavy white precipitate is formed which does not dissolve in dil. HCl. the compound (X) is ..[ DEC 1994]
11%
a) A nitrate
22%
b) A bromide
56%
c)A sulphate
11%
d)A carbonate
Q.12.
Which of the following salts does not impart a colour to the flame? [ Pb CET 1995]
0%
a) LiCl
27%
b) KCl
64%
c)MgCl2
9%
d)CaCl2
Q.13.
Calcium is obtained by the .. [ MP PMT 1996]
58%
a) Electrolysis of molten CaCl2
17%
b) Electrolysis of solution of CaCl2 in water
8%
c) Reduction of CaCl2 with carbon
17%
d) Roasting of lime
Q.14.
Amongst the following hydroxides, the one which has the lowest value of Ksp at ordinary temperature ( about 25°C) is ..[IIT 1990]
36%
a)Mg(OH)2
7%
b) Ca(OH)2
14%
c)Ba(OH)2
43%
d)Be(OH)2
Q.15.
Among the following: NaOH, Ca(OH)2, KOH and Zn(OH)2, the weakest base is ..[KCET 1993]
20%
a) NaOH
10%
b) Ca(OH)2
10%
c)KOH
60%
d)Zn(OH)2
Q.16.
Beryllium is placed above magnesium in the second group. Beryllium dust, therefore, when added to MgCl2 solution will ...[DPMT 1994]
56%
a)Have no effect
11%
b) Precipitate Mg metal
11%
c)Precipitate MgO
22%
d)Lead to dissolution of beryllium metal
Q.17.
The solubility in water of sulphate's down the Be group is Be > Mg > Sr > Ba. This is due to.. [ CBSE PMT 1995]
56%
a) High heat of solution for smaller ions like BE2+
0%
b) Increasing molecular weight
44%
c) Decreasing lattice energy
0%
d) Increase in melting points
Q.18.
Electron configuration of calcium atom may be written as .. [ CBSE PMT 1992]
0%
a)Ne, 4p2
50%
b) Ar, 4s2
38%
c)Ne, 4s2
12%
d)Ar, 4p2
Q.19.
Melting point of calcium halides decreases in order .. [ CPMT 1993]
88%
a) CaF2 > CaCl2 > CaBr2 > CaI2
0%
b) CaI2 > CaBr2 > CaCl2 > CaF2
0%
c)CaBr2 > CaI2 >CaF2 > CaCl2
12%
d)CaCl2 > CaBr2 > CaI2 > CaF2
Q.20.
The one which does not show variable valency is ..[ Pb CET 1997]
88%
a)Barium
0%
b) Titanium
12%
c)Copper
0%
d)Lead
Q.21.
The compounds of alkaline earth metals have the following magnetic nature .. [ MP PMT 1998]
75%
a) Diamagnetic
0%
b) paramagnetic
12%
c)ferromagnetic
12%
d)Anti ferromagnetic
Q.22.
Limestone is not used in which of the following manufacturing process?
50%
a) Phosphorus from phosphate
0%
b) Iron from haematite
38%
c)Solvay process of sodium carbonate
12%
d)Portland cement
Q.23.
Carnallite on electrolysis gives [ Kerala MEE 2003]
25%
a) Ca and Cl2
12%
b) Na and CO2
50%
c) Mg and Cl2
12%
d) K and CO2
Q.24.
Alkaline earth metals form ions of the general formula ..[Pb CET 1997]
75%
a)M2+
0%
b) M+
25%
c)M
0%
d)M2-
Q.25.
he solubility in water of sulphates down the Be group is Be > Mg > Ca > Sr > Ba. This is due to ..[AIIMS 1999]
11%
a) High ionization energy
11%
b) Increase in melting point
33%
c)Higher coordination number
44%
d)All of these
Q.26.
Which of the following has maximum ionization energy> [ Bihar CEE 2002]
0%
a) Ba → Ba+ + e-
33%
b) Be → Me+ + e-
11%
c)Ca → Ca2+ + 2e-
56%
d)Mg → Mg2+ + 2e-
Q.27.
The solubility of carbonates decrease down the magnesium group due to a decrease in ...[AIEEE 2003]
38%
a) Hydration energies of cations
12%
b) Inter ionic interaction
38%
c) Entropy of solution formation
12%
d) Lattice energies of solids
Q.28.
For two ionic solids CaO and KI, identify the wrong statement among the following? [ CBSE PMT 1997]
29%
a)Lattice energy of CaO is much higher than that of KI
29%
b) KI is soluble in benzene
14%
c)CaO has high m.p.
29%
d)KI has high m.p.
Q.29.
halides of alkaline earth metals form hydrates such as MgCl2 . 6H2O, CaCl2.6H2O, BaCl2 . 2H2O and SrCl2 .2H2O. This shows that halides of group 2 elements ... [ Roorkee Screeing Test 2000]
25%
a) Are hygroscopic in nature
12%
b) Act as dehydrating agents
25%
c)Can absorb moisture from air
38%
d)All of the above
Q.30.
Which of the following process is used in the extractive metallurgy of magnesium? [ IIT screening 2002]
50%
a) Fused salt electrolysis
0%
b) Self reduction
50%
c)Aqueous solution electrolysis
0%
d)Thermite reduction
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