Q.1
Which of the following statement is false for alkali metals? [ MLNR 1994]
  • a)Lithium is strongest reducing agent
  • b) Sodium is amphoteric in nature
  • c)Li+ is exceptionally small
  • d)Alkali metals give blue solution in liquid ammonia
Q.2
Which of the following oxides is formed when potassium metal is burnt in excess air? [ Pb. CET 1990]
  • a) K2O
  • b) KO
  • c)KO2
  • d)K2O2
Q.3
Salt used for performing bead test in qualitative inorganic analysis is .. [MLNR 1991]
  • a) K2SO4. Al2(SO4 .6H2O
  • b) FeSO4 . (NH4)2SO4 .6H2O
  • c) Na(NH4)HPO4 .4H2O
  • d) CuSO4 . 5H2O
Q.4
Sodium carbonate reacts with SO2 in aqueous medium to give .. [ MP PMT 1985]
  • a)NaHSO3
  • b) Na2S2O3
  • c)NaHSO4
  • d)Na2SO4
Q.5
Sodium metal cannot be stored under.. [ CPMT 1988]
  • a) Benzene
  • b) Kerosene oil
  • c)Alcohol
  • d)Toluene
Q.6
The properties of lithium are similar to those of Mg. This is because ..[NCERT 1990]
  • a) Both have nearly same size
  • b) The ratio of their charge to size is nearly same
  • c)Both have similar electron configuration
  • d)Both are found together in nature
Q.7
The alkali metal that reacts with nitrogen directly to form nitride is ... [Roorkee 1992]
  • a) Li
  • b) Na
  • c) K
  • d) Rb
Q.8
Which of the following imparts violet coloration to the non-luminous flame of Bunsen burner? [ CPMT 1985]
  • a)NaCl
  • b) BaCl2
  • c)CaCl2
  • d)KCl
Q.9
Which of the following atoms will have the smallest size? [ CBSE PMT 1989]
  • a) Mg
  • b) Na
  • c)Be
  • d)Li
Q.10
Potassium metal is commercially prepared by the reduction of molten KCl with metallic sodium at 850°C. This method is based upon the following principle. ..[Pb CET 1990]
  • a) Sodium is more reactive than potassium at this temperature
  • b) Potassium being more volatile distills off thus shifting the reaction forward
  • c)Sodium prefers to bind to chloride ions in preference to potassium ions
  • d)Potassium and sodium form an alloy at this temperature
Q.11
Which of the following does not illustrate the anomalous properties of Li? [ MP CET 1993]
  • a) The m.p. and b.p. of Li are comparatively high
  • b) Li forms a nitride unlike group 1 metals
  • c) Li is much softer than the other I group metals
  • d) Li+ and its compounds are more heavily hydrated than those of the rest of the group
Q.12
The pair of compounds which cannot exist together in solution is ... [ IIT 1986]
  • a)NaHCO3 and NaOH
  • b) NaHCO3 and H2O
  • c)NaHCO3 and Na2CO3
  • d)Na2CO3 and NaOH
Q.13
Which of the following alkali metal hydroxides is the strongest base? [ PbCET 1990]
  • a) LiOH
  • b) NaOH
  • c)KOH
  • d)CsOH
Q.14
Microcosmic salt is .. [CPMT 1991]
  • a) Na2HPO4 . 2H2O
  • b) (NH4)2HPO4
  • c)Na(NH4)HPO4 .4H2O
  • d)None of above
Q.15
In the preparation of sodium carbonate (Na2CO3) which of the following is used? ..[AFMC 1992]
  • a) Slaked lime
  • b) Quick lime
  • c) Lime stone
  • d) Sodium hydroxide
Q.16
Which is manufactured by electrolysis of fused NaCl? ..[CPMT 1983]
  • a)NaOH
  • b) Na
  • c)NaClO
  • d)NaClO3
Q.17
When CO2 is bubbled into aqueous solution of Na2CO3 the following is formed [MP PMT 1986]
  • a) NaOH
  • b) NaHCO3
  • c)H2O
  • d)OH-
Q.18
Which of the following compounds has the lowest anion to cation size ratio? [ NCERT 1990]
  • a) LiF
  • b) NaF
  • c)CsI
  • d)CsF
Q.19
Sodium conducts electricity because .. [Pb CET1991]
  • a) It is a soft alkali metal
  • b) It has only one electron in the outermost orbit
  • c) It has mobile electrons
  • d) It gives hydrogen with water
Q.20
Molecular formula of Glauber's salt is .. [ IIT 1985]
  • a)MgSO4 . 7H2O
  • b) CuSO4 .5H2O
  • c)FeSO4 . 7H2O
  • d)Na2SO4 . 10H2O
Q.21
Among alkali metal salts, the lithium salts are the poorest conductors of electricity in aqueous solution because of .. [Pb CET 1989]
  • a) Easy diffusion of Li+ ions
  • b) Lower ability of Li+ ions to polarize water molecules
  • c)Lowest charge to radius ratio
  • d)Higher degree of hydration of Li+ ions
Q.22
The gas evolved on heating Na2CO3 is ..[CPMT 1990]
  • a)CO2
  • b) CO
  • c)Water gas
  • d)No gas
Q.23
The correct sequence of the alkali metals in the group is ... [ AFMC 1992]
  • a) Fr, Na, K, Rb, Cs, Li
  • b) Li, Na, K, Rb, Cs, Fr
  • c) Na, K, Rb, Cs, Fr, Li
  • d) Rb, Cs, Li, Na, K
Q.24
Nitrogen can not be prepared by heating .. [ IIT 1985]
  • a)KNO3
  • b) Pb(NO3)2
  • c)Cu(NO3)2
  • d)AgNO3
Q.25
The formula of nitre is ... [CPMT 1989]
  • a) KNO3
  • b) NaNO2
  • c)NaCl
  • d)Na2CO3
Q.26
NaCl crystal consists of .. [ Vellore PMT 1991]
  • a) NaCl molecules
  • b) Na and Cl atoms
  • c)Na+ and Cl- ions
  • d)Na- and Cl+ ions
Q.27
The chloride of an element A gives a neutral solution in water. In the periodic table, the element A belongs to ...[ AIIMS 1992]
  • a) First group
  • b) Third group
  • c) Fifth group
  • d) First transition series
Q.28
Which of the following is radioactive? [ BHU 1992]
  • a)Na 23
  • b) K39
  • c)K40
  • d)Ca40
Q.29
Compared to alkali earth metals, the alkali metals exhibit... [CBSE PMT 1990]
  • a) Smaller ionic radii
  • b) Highest boiling points
  • c)Greater hardness
  • d)Lower ionization energies
Q.30
Which of the following is more basic ..[Vellore PMT 1991]
  • a) Na2O
  • b) BaO
  • c)Al2O3
  • d)As2O3
0 h : 0 m : 1 s