Q.1
hich among CH4, SiH4 , GeH4 and SnH4 is most volatile .. [ JIPMER 2001]
  • a) CH4
  • b) SiH4
  • c) GeH4
  • d) SnH4
Q.2
Which of the following does not give silicon
  • a) SiCl4 + H2
  • b) Heating SiI4
  • c) Heating SiO2 at high temperature
  • d) SiCl4 + CH3MgCl
Q.3
A pseudo solid is ... [ CPMT 1998]
  • a) Diamond
  • b) Glass
  • c) Rock salt
  • d) CaCO3
Q.4
Which of the following sukphate is insoluble in water? [ MP PMT 2000]
  • a) CuSO4
  • b) CdSO4
  • c) PbSO4
  • d) Bi2(SO4)3
Q.5
Which of the following reaction occurs at the cathode of the charging of lead storage battery? [ MP PMT 2002]
  • a) Pb2+ + 2e- → Pb
  • b) Pb2+ + SO42- → PbSO4
  • c) Pb → Pb2+ + 2e-
  • d) PbSO4 + 2H2O → PbO2 +4H+ + SO4- + 2e-
Q.6
Which of the following is not acidic? [ Harayana CEET 2003]
  • a) PCl3
  • b) SbCl3
  • c) BiCl3
  • d) CCl4
Q.7
Quartz is a crystalline variety of ... {DOPMT 1998]
  • a) Si
  • b) SiO2
  • c) Na2SiO3
  • d) SiC
Q.8
The variety of glass used in making lens and prisms is .. [ kerala CEE 2001]
  • a) soda glass
  • b) borosilicate glass
  • c) Flint glass
  • d) Crook's glass
Q.9
Lead is maximum in ... [ DPMT 2003]
  • a) Pyrex glass
  • b) Soda glass
  • c) Flint glass
  • d) Jena glass
Q.10
Which is not true regarding element Si
  • a) Its maximum covalency is six
  • b) It gives P type semiconductor when doped with Al
  • c) Its chloride is inert in water
  • d) Its oxides form salt with NaOH
Q.11
An oxide of lead which is used in a lead storage batteries, in safety matches and is a powerful oxidising agent is
  • a) PbO
  • b) PbO2
  • c) Pb3O34
  • d) 2PbO.PbO2
Q.12
in laboratory, silicon can be prepared by the reaction of ... [ DPMT 1997]
  • a) SiO2 with Mg
  • b) By heating C in electric furnace
  • c) By heating potassium fluorosilicate with potassium
  • d) None of these
Q.13
For making good quality mirror, plates of flint glass are used. these are obtained by floating molten glass over liquid which does not solidify before glass. The metal used can be .. [ AIEEE 2003]
  • a) Tin
  • b) Sodium
  • c) Magnesium
  • d) Mercury
Q.14
The metal used for making radiation shield is [ Kerala MEE 2002]
  • a) Al
  • b) Pb
  • c) Fe
  • d) Si
Q.15
The element which do not form a monoxide is .. [ Kerala MEE 2001]
  • a) Lead
  • b) Tin
  • c) silicon
  • d) Carbon
Q.16
LPG contains .. [ Bihar CEE 2002]
  • a) Methane
  • b) Ethane
  • c) Butane
  • d) non of these
Q.17
Which element-element bond has highest bond energy
  • a) Sn - Sn
  • b) Ge - Ge
  • c) SiF4
  • d) Si - Si
Q.18
Maximum covalency of silicon is
  • a) 4
  • b) 6
  • c) 3
  • d) 2
Q.19
Lead sulphate is soluble in ... {PMP CEE 1999]
  • a) Conc. HNO3
  • b) Conc. HCl
  • c) Solution of ammonium acetate
  • d) Water
Q.20
Which of the following lead oxide is 'Sindure'? [ MP CET 2002]
  • a) PbO
  • b) PbO2
  • c) Pb2O3
  • d) Pb3O4
Q.21
An alloy of Pb and Sn in equal proportion is called
  • a) Gun metal
  • b) Horn silver
  • c) Constantans
  • d) Solder
Q.22
In manufacturing of cement which of the following is used?
  • a) gypsum and Silica
  • b) Lime stone and silica
  • c) Lime stone and clay
  • d) Lime stone and gypsum
Q.23
Which of the following statement is correct with respect to the property of elements with increase in atomic number in carbon family
  • a) Their metallic character decreases
  • b) The stability of +2 oxidation state increases
  • c) Their ionization energy increases
  • d) Their atomic size decreases
Q.24
Wood charcole is used to decolorise sugar because it .. [ UP CET 2002]
  • a) Adsorbs coloured material
  • b) Absorbs decoloured material
  • c) Reduces coloured material
  • d) None of these
Q.25
Graphite is similar to
  • a) B
  • b) BC
  • c) B2H6
  • d) BN
Q.26
Glass reacts with HF to produce
  • a) Na2AlF4
  • b) H2SiF6
  • c) NaSiF3
  • d) SiF6
Q.27
hich of the following bond has the most polar character?
  • a) C -O
  • b) C - Br
  • c) C- I
  • d) C - F
Q.28
Graphite is a soft solid lubricant extremely difficult to melt. THe reason for this anomalous behavior is that graphite .. [ AIEEE 2003]
  • a) Is non-crystalline substance
  • b) In allotropic form diamond
  • c) Has molecules of various molecular masses
  • d) Has carbon atoms arranged in large plates of hexagonal ring of strongly bounded atoms with weak interplate bonds
Q.29
A fibrous material which can withstand red hot flames without any damage is
  • a) Talc
  • b) Glass wool
  • c) Asbestos
  • d) soap stone
Q.30
In laboratory silicon can be prepared by the reaction of ..
  • a) SiO2 with Mg
  • b) By heating SiO2 with Al
  • c) By heating potassium fluorosilicate
  • d) None of the above
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