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  1. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    7 is A (an addition reaction attachmnt#41947 ) qk addition reacton mei he single product mlta hai
  2. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    iron..rusting? it reacts with air as air has oxygen.
  3. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    yep
  4. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    how :O copper cannot react with an acid untl n unless the acid is concentrated
  5. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    7 is D : potassium dichromate wla qk first three r al properties of an acid nd r thus correct
  6. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    30 :)
  7. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    6 is C .because : in option A copper is not reactive enough to react with an acid.or u can say its below hydrogen so it wont displace hydrogen . in option B copper is below Zinc ,as a result, no reaction in option D, calcium carbonate is insoluble in water,hence,no reaction. this leaves us...
  8. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    4 is B since hydrogen has the least Mr compartivly to that of air. here u'l have to compare the Mr's with the Mr of air which is 30 or 32. 7 is D snce the trapped air would react with the steel wool as its an alloy of iron and thats pretty clear that iron reatcs rapidly with air(Oxygen).
  9. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    3) it is C ;)... if you look at it it has propanol and methanoic acid... Prop=3 and meth=1 so it gives u four carbon atoms :)
  10. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    5's A since barium is insoluble in water and can b collectd thru filtration. (ithink) Rest are horrifying :P let me take a proper look lol
  11. peacce

    Thanks for the follow !

    Thanks for the follow !
    • peacce
    • Profile post
  12. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    ci-b vil giv u ur ans :)
  13. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    wt year is it?
  14. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    koi bat nai hjata hai :P
  15. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    yayyyyyy got it :) thnxxxxxxxxxx
  16. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    link :P
  17. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    No ,B: I too choosed A o.O
  18. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    in my fce ahahhhhhhhhhhhhhhhahhah
  19. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    :( Pata nai . :cry:
  20. peacce

    Biology; Chemistry; Physics: Post your doubts here!

    thora thora aya samajh :P
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