Q.1
In diamond, each carbon atom has connected to how many carbon atoms?
  • 4
  • 3
  • 6
  • 8
Q.2
Which element is metalloid in groupelement
  • B
  • Gn
  • Al
  • Ti
Q.3
Compounds of boron with hydrogen are known as
  • Boranes
  • Borazines
  • Borazoles
  • None
Q.4
What did Haber synthesis is for ?
  • Synthesizing Chlorine gas
  • Synthesizing Mustard gas
  • Synthesizing Ammonia
  • Synthesizing Sulphuric acid
Q.5
How many valence electrons does groupelements have?
  • 18
  • 16
  • 10
  • 6
Q.6
The inert pair effect increase when
  • Across the period
  • Going down the group
  • Don"t no the answer
Q.7
Si2O7 is
  • Pyrosilicate
  • Sheet silicate
  • Chain silicate
  • Orthodox silicate
Q.8
Stable oxides of carbon are
  • CO, CO2
  • CO, C3O2
  • C2O,C3O2
  • C2O
Q.9
Which of the following is a interstitial carbide
  • WC
  • SiC
  • Al4C3
  • Be2C
Q.10
Al4C3 on hydrolysis give
  • CH4
  • C2H6
  • C2H4
  • C2H2
Q.11
Buckminster fullerene is
  • C 60
  • C90
  • Pure diamond
  • Graphite
Q.12
What is the nature of carbide of silicon
  • Covalent
  • Ionic
  • Metallic
  • Van der waals
Q.13
CO+N2 is
  • Producer gas
  • Water gas
  • Syn gas
  • Coal gas
Q.14
Sindoor is
  • PbNO3
  • Pb3O4
  • PbOH2
  • PbCO3
Q.15
Quartz is a crystalline variety of
  • Silicon carbide
  • Silica
  • Sodium silicate
  • Silicon
Q.16
Which of the following is not amphoteric
  • CO2
  • GeO2
  • SnO2
  • PbO2
Q.17
As we move down the group basicity of groupelements
  • Increases
  • Decreases
  • Remain constant
  • None of the above
Q.18
As we move down the group thermal stability of groupelements hydrides
  • Increases
  • Decreases
  • Remain constant
  • None of the above
Q.19
As we move down the group reducing character of groupelements
  • Increases
  • Decreases
  • Remain constant
  • None of the above
Q.20
In groupelements as we move down the group electronegativity
  • Decreases
  • Increases
  • Remain constant
  • None of the above
0 h : 0 m : 1 s