Q.1
Thomas slag is ... [ CPMT 1988]
  • a) Ca3(PO4)2
  • b) CaSiO3
  • c) FeSiO3
  • d) Mixture of (a) and (b)
Q.2
Which of the following is not used as pigment in paints
  • a) Lead dioxide
  • b) White lead
  • c) Lead chromate
  • d) Pb3O4
Q.3
Which of the following shows bonds in Silicones .. [ AIIMS 1994]
  • a) Si - Si - Si - Si
  • b) Si -C - Si - O - Si
  • c) Si - C - Si- C - Si
  • d) - Si - O - Si - O - Si
Q.4
Glass is a .... [ CBSE PMT 1991]
  • a) Liquid
  • b) Solid
  • c) Supercooled liquid
  • d) Transparent organic polymer
Q.5
Which of the following is semiconductor .. [ CPMT 1985]
  • a) C
  • b) Pb
  • c) Ge
  • d) Sn
Q.6
Which one of these is acidic? [ Pb. CET 1991]
  • a) Al2O3
  • b) SnO2
  • c) PbO2
  • d) SiO2
Q.7
Identify the correct statements from the following : (a) CO2(g) is used as refrigerant for ice-cream and frozen food. (b) The structure of C60 contains twelve six carbon rings and twenty five carbon rings. (c) ZSM-5, a type of zeolite, is used to convert alcohols into gasoline. (d) CO is colorless and odourless gas. [ NEET 2020]
  • a) (b) and (c) only
  • b) (c) and (d) only
  • c) (a), (b) and (c) only
  • d) (a) and (c) only
Q.8
Which of the following is incorrect statement? [ NEET 2019]
  • a) PbF4 is covalent in nature
  • b) SiCl4 is easily hydrolysed
  • c) GeX4 (X = F, Cl, Br, I) is more stable than GeX2
  • d) SnF4 is ionic in nature
Q.9
Glass reacts with HF to produce .. [ EAMCET 1994]
  • a) Na3AlF6
  • b) H2SiF6
  • c) H2SiO3
  • d) SiF4
Q.10
The structure and hybridization of Si(CH3)4 is .. [ CBSE PMT 1996]
  • a) Bent, sp
  • b) trigonal, sp2
  • c) Octahedral, d2sp3
  • d) tetrahedral, sp3
Q.11
The ability of a substance to assume two or more crystalline structures is called ... [ CBSE PMT 1990]
  • a) Isomerism
  • b) Polymorphism
  • c) Isomorphism
  • d) Amorphism
Q.12
The halide which is not hydrolyzed is ... [ AFMC 1991]
  • a) SiCl4
  • b) SiF4
  • c) CCl4
  • d) PbCl4
Q.13
PbCl4 exists but PbBr4 and PbI do not, because of ... [BHU 1993]
  • a) Inability of bromine and iodine to oxidize Pb+2 to Pb+4
  • b) Be- and I- ions are bigger in size
  • c) More electropositive nature of bromine and iodine
  • d) Chlorine is gas
Q.14
Pyrex glass is a mixture of ... [ CPMT 1988]
  • a) Sodium borosilicate and aluminum borosilicate
  • b) Sodium silicate and calcium silicate
  • c) Sodium silicate and lead silicate
  • d) Sodium silicate and aluminum borosilicate
Q.15
the chemical composition of white lead is ... [ Pb CET sample paper 1991]
  • a) Na2CO3
  • b) Pb3O4
  • c) Pb(OH)2 . 2PbCO3
  • d) PbO
Q.16
Red lead is ? { Bihar CEE 1995] Hello
  • a) PbO
  • b) Pb3O4
  • c) PbO2
  • d) Pb4O3
Q.17
White lead is [CPMT 1993]
  • a) Basic lead nitrate
  • b) Acidic lead carbonate
  • c) Basic lead carbonate
  • d) basic lead hydroxide
Q.18
Which of the following melts in boiling water.. [ MLNR 1984]
  • a) Gun metal
  • b) Wood metal
  • c) Monel metal
  • d) Bell metal
Q.19
The substance used as a smoke screen in warfare is ... [ CBSE PMT 1989]
  • a) SiCl4
  • b) PH3
  • c) PCl5
  • d) Acetylene
Q.20
Composition of glass is {CPMT 1993]
  • a) Silica, Lime, NaCl
  • b) Silica, lime, Na2CO3
  • c) Silica, NaCl
  • d) Lime, Na2CO3
Q.21
Which of the following statements is correct with respect to the property of elements with increase in atomic number in the carbon family ( group14)? [ BHU 1994]
  • a) Their metallic character decreases
  • b) The stability of +2 oxidation state increases
  • c) Their ionization energy increases
  • d) their atomic size decreases
Q.22
optical glass contains a high percentage of ... [ KCET 1997]
  • a) MgO
  • b) Al2O3
  • c) B2O3
  • d) PbO
Q.23
An alloy which does not contain copper is [ DPMT 1984]
  • a) Solder
  • b) Bronze
  • c) Brass
  • d) Bell metal
Q.24
The composition of the common glass is [ HAriyana CEET 1991]
  • a) Na2O. CaO.6SiO2
  • b) Na2O.Al2O3.2SiO2
  • c) CaO.Al2O3.SiO2
  • d) Na2O. CaO.Al2O3.6SiO2
Q.25
The material used in solar cells contains... [ IIT 1993]
  • a) Cs
  • b) Si
  • c) Sn
  • d) Ti
Q.26
Method used for obtaining highly pure silicon used as semiconductor material is [ CBSE PMT 1994]
  • a) Oxidation
  • b) Electrochemical reduction
  • c) Crystallization
  • d) Zone refining
Q.27
galina is an ore of ... [ Pb. CET 1989]
  • a) Gallium
  • b) Lead
  • c) Tin
  • d) Germanium
Q.28
Lithage is not commonly used in ... [Pb CET 1989]
  • a) The manufacture of special glasses
  • b) Glazing pottery
  • c) Preparing paints
  • d) Lead storage batteries
Q.29
Which variety of glass is used for manufacture of optical glasses
  • a) Sodium glasses
  • b) Flint glass
  • c) Ground glass
  • d) Quartz glass
Q.30
Gun metal is an alloy of .. [ EAMCET 1995]
  • a) Mg, Sn, Zn
  • b) Cu, Ni, An
  • c) Cu, Sn, Zn, Pb
  • d) Cu, Sb, Zn, Pb
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