Q.1
Which is insoluble in water?
  • a) H2O
  • b) HgCl2
  • c) Ca(NO3)2
  • d) CaF2
Q.2
The first ionization potentials (eV) of Be and B respectively are ..[ CBSE PMT 1998]
  • a)8.29, 9.32
  • b) 9.32, 9.32
  • c)8.29, 8.29
  • d)9.23, 8.29
Q.3
Plaster of paris is used .. [ CPMT 2000]
  • a) As a plaster for walls
  • b) In dentistry and surgery
  • c)In metallurgical process
  • d)As drying agent
Q.4
The reaction of slaked lime with Cl2 gas gives.. [ kerala MEE 2000]
  • a)only Ca(OCl)2
  • b) only CaCl2
  • c)Mixture of ca(OCl)2, Ca(OH)2, CaCl2 and H2O
  • d)baryta water
Q.5
Which of the following ion forms a hydroxide highly soluble in water? [ DPMT 1979]
  • a) Ni2+
  • b) K+
  • c) Zn2+
  • d) Al3+
Q.6
One which is not dissolved by dilute hydrochloric acid is .. [ P. CET 1997]
  • a)ZnS
  • b) MnS
  • c)BaCO3
  • d)BaSO4
Q.7
Which of the following is incorrect
  • a) Mg burns in air releasing dazzling light rich in UV rays
  • b) CaCl2 . 6H2O when mixed with ice gives freezing mixture
  • c)Mg cannot form complex
  • d)Be can form complexes due to its very small size
Q.8
On heating quick lime with coke in an electric furnace, we get ..[AIIMS 2001]
  • a) Ca and CO2
  • b) CaCO3
  • c)CaO
  • d)CaC2
Q.9
In curing cement plaster, water is sprinkled from time to time. This helps in .... [ AIEEE2003]
  • a) Developing interlocking needle like crystals of hydrated silicates
  • b) Hydrated sand gravel mixed with cement
  • c) Converting sand into silicic acid
  • d) keeping it cool
Q.10
the correct order of increasing ionic character is ..[AFMC 1998]
  • a)BeCl2 < MgCl2 < CaCl2 < BaCl2
  • b) BeCl2 < MgCl2 < BaCl2 < CaCl2
  • c)BeCl2 < BaCl2 < MgCl2 < CaCl2
  • d)BaCl2 < CaCl2 < MgCl2 < BeCl2
Q.11
Among the alkaline earth metals, the element forming predominantly covalent compound is ..[MP CEE 1999]
  • a) Ba
  • b) Sr
  • c)Ca
  • d)Be
Q.12
As alkaline earth metals ( except Be) tend to lose their valence electrons readily, they acts as [ Keralla MEE 2002]
  • a) Weak oxidising agents
  • b) Weak reducing agents
  • c)Strong oxidising agents
  • d)Bases
Q.13
Several blocks of magnesium are fixed to the bottom of ship to .. [AIEEE 2003]
  • a) Make the ship lighter
  • b) Prevent action of water and salt
  • c) Prevent puncturing by under-sea rocks
  • d) Keep away the hark
Q.14
Property of the alkaline earth metals that increases with their atomic number is ... [ IIT 1997]
  • a)Ionization energy
  • b) Solubility of their hydroxides
  • c)Solubility of their sulphates
  • d)electro negativity
Q.15
A metal X on heating in nitrogen gas gives Y, Y on treatment with H2O gives a colourless gas which when passed through CuSO4 solution gives a blue colour. Y is .. [ DEC 2000]
  • a) Mg(NO3)2
  • b) Mg3N2
  • c)NH3
  • d)MgO
Q.16
The number of covalent bonds formed by beryllium is ... [ Manipal PMT 2001]
  • a) 2
  • b) 3
  • c)4
  • d)5
Q.17
30g of Mg and 30g of O2 are reacted and residual mixture contains..
  • a) 60 g of Mg only
  • b) 40g of MgO and 20g of O2
  • c) 45g of MgO and 15g of O2
  • d) 50g of MgO and 10g of O2
Q.18
metals belonging to the same group in the periodic table are ..[ MP PMT 1998]
  • a)Mg and Na
  • b) Mg and Cu
  • c)Mg and Ba
  • d)Mg and K
Q.19
the set representing correct order of first ionization potential is ..[ IIT screening test 2001]
  • a) K > Na > Li
  • b) Be > Mg > Ca
  • c)B > C > N
  • d)Ge > Si > C
Q.20
A solution of MgCl2 in water has pH .. [ MP PMT 2002]
  • a) < 7
  • b) > 7
  • c)7
  • d)14.2
Q.21
Fire extinguishers contain H2SO4 and ...[AFMC 1980]
  • a) NaHCO3 and Na2CO3
  • b) NaHCO3solution
  • c) Na2CO3
  • d) CaCO3
Q.22
The first ionization potential of Mg is ..[ CPMT 1997]
  • a)Less than Al
  • b) More than Al
  • c)Equal to Al
  • d)Zero
Q.23
A chloride dissolves appreciably in cold water. When placed on a Pt. wire in Bunsen flame, no distinctive colour is noted. Which cation could be present
  • a) Be2+
  • b) Ba2+
  • c)Pb2+
  • d)Ca2+
Q.24
The substance not likely to contain CaCO3 is ... [ AIEEE 2003]
  • a) Calcined gypsum
  • b) Sea shells
  • c) Dolomite
  • d) A marble statue
Q.25
What is X in the following reaction? MgCl2 + 2H2O → X + 2HCl + H2O
  • a)MgO
  • b) Mg
  • c)Mg(OH)2
  • d)Mg(OH)Cl
Q.26
Chemical A is used for water softening to remove temporary hardness. A reacts with Na2CO3 to generate caustic soda. When CO2 is bubbled through A, it turns cloudy. What is the chemical formula of A....[ AIIMS 1999]
  • a) CaCO3
  • b) CaO
  • c)Ca(OH)2
  • d)Ca(HCO3)2
Q.27
As the nuclear charge increases from neon to calcium, the orbital energies...[kerala MEE 2002]
  • a)Increases
  • b) Increase very rapidly
  • c)Increases very slowly
  • d)remains constant
Q.28
Initial setting of cement is mainly due to .. [ kerala CEE 2003]
  • a) Hydration and gel formation
  • b) Dehydration and gel formation
  • c) Hydration and hydrolysis
  • d) Hydration and oxidation
Q.29
Lebanese process is employed in the manufacture of .. [CPMT 1982]
  • a)Baking soda
  • b) Washing soda
  • c)Potash
  • d)Plaster of paris
Q.30
The metallic lustre exhibited by sodium is explained by .. [ IIT 1987]
  • a) Diffusion of sodium ions
  • b) Oscillation of loose electrons
  • c)Excitation of free protons
  • d)Existence of body centered cubic lattice
0 h : 0 m : 1 s