• Poisonous gas found in the smoke released from car :
    CH4
    C2H2
    CO
    CO2
  • Which among the following is not mineral of aluminium :
    Diaspore
    Corrundum
    Bauxite
    Anhydride
  • Which among the follwoing elements is a non-metal:
    Thallium
    Indium
    Boron
    Gallium
  • Which halide is the most acidic in nature :
    SbCl5
    CCl4
    PCl3
    BCl3