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  1. H

    Chemistry MCQ thread...

  2. H

    Chemistry MCQ thread...

    for e.g...u put fresh sodium in air....and see what happens..CAUTION..donot try this at LAB....lolx.... SPONTANEOUSLY means no heat needed and it forms a stable product
  3. H

    Chemistry MCQ thread...

    ITS A now discuss.... all exothermic reactions in nature occur sponataneously
  4. H

    Chemistry MCQ thread...

    no...let zishi anser
  5. H

    Chemistry MCQ thread...

  6. H

    Chemistry MCQ thread...

    My answer is B. What does the mark scheme say? u r ryt...k ready for next one,.....
  7. H

    Chemistry MCQ thread...

    GOOD question to test ur concepts on boltzmann distribution
  8. H

    POssible grade!!

    B
  9. H

    Chemistry MCQ thread...

    the plastic bags u see.......are made of polyethene....so its non-biodegradable....odourless burnt----unreactive
  10. H

    POssible grade!!

    well i knw.....a ...A A C OR A A B cn produce a sure A FOR AS IN phy che bio
  11. H

    CHEMISTRY MCQ TIPS

    yeah...i mostly do mistakes in them.....
  12. H

    chem mcq...

    OZONE IS DESTROYED BY halogen free radicals....primarily chlorine free radical.....so u shud go to the most obvious anser D...where only hazard is of flammability and adding CO2 to atmosphere
  13. H

    POssible grade!!

    A
  14. H

    Chemistry MCQ thread...

    An element,X, conducts electricity in the solid. It has a very high melting point. Its chloride does not dissolve in water. One of its oxides dissolves moderately in water to give a faintly acidic solution.X is likely to be A aluminium B graphite C magnesium D lead
  15. H

    Chemistry MCQ thread...

    so ready for a tough one ZiShi....
  16. H

    chem mcq...

  17. H

    physxx mcQ

    hmm...makes sense.....
  18. H

    chem mcq...

    well....u shud first off all recognise there is a carbonate....and salt must be a double carbonate cos it produced effervescence later on adding to acid.....it ll be C not D..LET me tell u wats the tricky part....actually if we heat D both MgCO3 and CaCO3 WILL Decompose....but in C only one will...
  19. H

    physxx mcQ

    I CN T UNDERSTND HOW TO FIGURE out whether its parallel or series
  20. H

    Chemistry MCQ thread...

    or to put it simply AlCl3 is purely covalent as SiCl4 while NaCl is ionic...
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