Which of the following conceivable structures for CCL4 will have a zero dipole moment?
17%
a) Square planar
33%
b) Square pyramid ( Carbon at apex
17%
c) Irregular tetrahedron
33%
d) Regular tetrahedron
Q.2.
The soliders of Nepolean army while at Alps during freezing winter suffered a series problem as regards of the tin buttons of their uniforms. White metallic tin buttons got converted to gray powder. This transformation is related to .. [ AIEEE2004]
50%
a) An interaction with nitrogen of the air at very low temperature
17%
b) A change in crystalline structure of tin
0%
c) A change in the partial pressure of oxygen in air
33%
d) An interaction with water vapour contained in humid air
Q.3.
[SiO4]4- has tetrahedral structure, the silicate formed by using the three oxygen has
29%
a) Two dimension; sheet structure
29%
b) Pyrosilicate structure
14%
c) Linear polymer structure
29%
d) Three dimensional structure
Q.4.
Which does not exists
17%
a) Si2O76-
50%
b) [CCl6]2-
0%
c) [SiCl6]2-
33%
d) [GeCl6]2-
Q.5.
The oxide which can not act as reducing agent is ...
33%
a) SO2
17%
b) NO2
17%
c) CO2
33%
d) PCl3
Q.6.
In silicon dioxied [ AIEEE 2005]
67%
a) Each silicon atom is surrounded by four oxygen atoms and each oxygen atom is bounded to two silicon atoms
33%
b) Each silicon atom is surrounded by two Oxygen atom and each oxygen atom is bonded to two silicon atoms
0%
c) Silicon is bonded to two silicon atoms
0%
d) There are double bonds between silicon and oxygen atoms
Q.7.
The stability of carbon tetrahalides of carbon decreases in the order
40%
a) CF4 > CCl4 >CBr4 > CI4
40%
b)CI4 > CBr4 > CCl4 > CF4
20%
c) CI4 >CCl4 > CBr4 > CF4
0%
d) CF4 >CBr4 > CCl4 > CI4
Q.8.
Water gas is a mixture of
17%
a) H2 and Air
50%
b) CO and H2
33%
c) CO2 and H2
0%
d) H2O and CO
Q.9.
Which of the following is amphotoric
33%
a) CO2
0%
b) SiO2
67%
c) SnO2
0%
d) CaO
Q.10.
The stability of dihalides of Si, Ge, Sn and Pb increases steadly in sequence... [ AIEEE 2007]
33%
a) PbX2 << SnX2 << GeX2 << SiX2
33%
b) GeX2<< SiX2 << SnX2 << PbX2
0%
c) SiX2 << GeX2 << PbX2 << SnX2
33%
d) SiX2 << geX2 << SnX2 << PbX2
Q.11.
Which of the following is the most ionic?
20%
a) CCl4
0%
b) SbCl4
60%
c) PbCl4
20%
d) SbCl2
Q.12.
Which one of the following is not a property of carbon
20%
a) It exhibits catenation
0%
b) It forms multiple bonds
60%
c) Its melting point and boiling points are very high
20%
d) It is a semi-metal
Q.13.
Which of the following is most allotropes of carbon is isomorphous with crystalline silicon?
40%
a) Coke
40%
b) Diamond
20%
c) Graphite
0%
d) Coal
Q.14.
Carborundum is obtained when silica is heated at high temperature with .. [ IIT 1982]
60%
a) Carbon
20%
b) Carbon monoxide
20%
c) Carbon dioxide
0%
d) Calcium carbonate
Q.15.
In the carbon family the elements other than carbon do not form pπ-pπ bonds because the atomic orbitals are to
60%
a) small and diffuse to under go sideways overlap
0%
b) large and diffuse to under go sideways overlap
40%
c) small and far to under go sideways overlap
0%
d) large and far to under go sideways overlap
Q.16.
Which of the following gas has highest calorific value?
50%
a) Coal gas
25%
b) Water gas
25%
c) Producer gas
0%
d) Carbon dioxide gas
Q.17.
Out of following which do not form mono-oxide ..
0%
a) Lead
0%
b) Tin
25%
c) Germanium
75%
d) Silicon
Q.18.
Moderate electrical conductivity is shown by .. [ IIT 1982]
0%
a) Silica
75%
b) Graphite
0%
c) Diamond
25%
d) Carborundum
Q.19.
Which of the following statements is correct?
50%
a) Graphite is thermodynamically more stable than diamond
25%
b) Diamond is thermodynamically more stable than graphite
25%
c) Graphite changes spontaneously to diamond
0%
d) Diamond changes to graphite spontaneously
Q.20.
Carbogen is
0%
a) Pure form of carbon
0%
b) CPOCl2
25%
c) Mixture of CO and CO2
75%
d) Mixture of O2 and CO2
Q.21.
SiO2 is reacted with sodium carbonate, What is the gas liberated/
0%
a) CO
0%
b) O2
100%
c) CO2
0%
d) O3
Q.22.
The species that does not contain peroxide ions is .. [ IIT 1992]
50%
a) PbO2
25%
b) H2O2
25%
c) SrO2
0%
d) BaO2
Q.23.
Chemically zeolites are
0%
a) Aluminosilicate
50%
b) Calcium aluminosilicate
25%
c) Hydrated aluminosilicate
25%
d) None
Q.24.
HCOOH reacts with concentrated H2SO4 to produce
25%
a) CO
25%
b) CO2
25%
c) SO2
25%
d) NO2
Q.25.
Thomas slag is ..
0%
a) Ca3(PO4)2
0%
b) CaSiO3
75%
c) Mixture of a and b
25%
d) Na2SiO3
Q.26.
(Me)SiCl2 on hydrolysis will produce .. [ IIT 2003]
25%
a) (Me)2Si(OH)2
25%
b) (Me)2Si = O
25%
c) -[(Me)2Si - O]-n
25%
d) (Me)2SiCl(OH)
Q.27.
CCl4 does not show hydrolysis but SiCl4 is readily hydrolyzed because
50%
a) Carbon cannot expand its octet but silicon can expand
0%
b) Electronegativity of carbon is higher than silicon
50%
c) Ionization energy of carbon is higher than of silicon
0%
d) Carbon form double and triple bonds but not silicon
Q.28.
Carbon monoxide reacts with Cl2 in presence of sunlight to give
50%
a) Phosgene
25%
b) COCl
0%
c) Phosphine
25%
d) CCl4
Q.29.
Which one of the following is correct set for SiO2
0%
a) Linear, acidic
0%
b) Linear, basic
50%
c) Tetra hedral, acidic
50%
d) Angular, basic
Q.30.
A metal, M forms chlorides in +2 and +4 oxidation states. Which of the following statements about these chlorides is correct? [ AIEEE 2006]
0%
a) MCl2 is more volatile than MCl4
60%
b) MCl2 is more soluble in anhydrous ethanol than MCl4
40%
c) MCl2 is more ionic than MCl4
0%
d) MCl2 is more easily hydrolyzed than MCl4
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.