While cooking, if the bottom of the vessel is getting blackened on the outside, it means that:
  • The food is not cooked completely
  • The fuel is not burning completely
  • The fuel is wet
  • The fuel is burning completely
Cation is formed when
  • Atom gains electrons
  • Atom loses electrons
  • Proton is lost by the atom
  • Atom shares electrons
Which of the following is the molecular formula of cyclobutane?
  • C4H10
  • C4H6
  • C4H8
  • C4H4
The property of self-linkage among identical atoms to form long chain compounds is known
  • Superposition
  • Catenation
  • Isomerisation
  • Halogenation
Which of the following statements about graphite and diamond is true?
  • They have the same crystal structure
  • They have the same degree of hardness
  • They have the same electrical conductivity
  • They can undergo the same chemical reactions
Which of the followings is the major constituent of the liquefied petroleum gas?
  • Ethane
  • Methane
  • Propane
  • Butane
From which of the following substance pencil lead is formed?
  • Charcoal
  • Wood
  • Lead
  • Graphite
-Methane is a major constituent of
  • CNG
  • Bio-gas
  • Natural Gas
  • All the above
Carbon is
  • divalent
  • trivalent
  • tetravalent
  • pentavalent
Covalent bonds
  • has low melting and boiling point
  • are generally poor conductors of electricity
  • has weak inter-molecular forces
  • All of the above
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