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  1. H

    Chemistry MCQ thread...

  2. H

    Chemistry MCQ thread...

  3. H

    Chemistry MCQ thread...

  4. H

    chanllenging mcqs

    just stik with the ICE table
  5. H

    chanllenging mcqs

  6. H

    chanllenging mcqs

    u pp; r ryt.....itS D and 1 only
  7. H

    Chemistry MCQ thread...

    Hydrogen chloride gas is prepared by adding concentrated sulfuric acid to solid sodium chloride. The same method was used to prepare hydrogen iodide but the yield is very low when concentrated sulfuric acid is added to solid sodium iodide. Which deductions can be made from the above? 1 Iodide is...
  8. H

    Chemistry MCQ thread...

    COOH GRoup also reacts with pcl5
  9. H

    Chemistry MCQ thread...

  10. H

    Chemistry MCQ thread...

    HOW DID U DO
  11. H

    chanllenging mcqs

    Magnesium reacts readily with dilute hydrochloric acid to form magnesium chloride and hydrogen. Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) The standard enthalpy change for this reaction can be measured in the laboratory. What further information is needed in order to calculate the standard enthalpy...
  12. H

    chanllenging mcqs

    BH3 reacts with (CH3)3N to give (CH3)3NBH3. Which one of the following will be true of (CH3)3NBH3? A It is optically active. B It contains hydrogen bonding. C The B atom is electron deficient. D The B atom is tetrahedrally coordinated.
  13. H

    Chemistry MCQ thread...

    a small spacecraft of capacity 10 m*3 is connected to another of capacity 30m*3.......b4 connection,the pressure inside smaller one is 50 kPa and 100 kPa in larger one...wats the final pressure..... A. 75 B 87.5 C 100 D 125
  14. H

    Chemistry MCQ thread...

    zishi...all bond making processes are EXOTHERMIC Apart from exceptions....so formation of H-CL is most exothermic since H-Cl bond strength is high and it decreases DOWN THE GROUP ......I.E LESS EXOTHERMIC AND IN CASE OF HI IT BECOMES ENDOTHERMIC SINCE h2 and I2 BONDS INVOLVE MORE ENERGY IN...
  15. H

    bIo mcqs thread !!!

    any1
  16. H

    Chemistry MCQ thread...

    1st one is A....2nd one b so zishi got 1 rong
  17. H

    Chemistry MCQ thread...

    WAT WUD BE OXIDATION NO. OF IODINE IN IBr
  18. H

    Chemistry MCQ thread...

    Which of the following statements is true about hydrogen halides? A Enthalpy change of formation becomes less exothermic down the group. B Thermal stability increases down the group. C Acidity of the corresponding aqueous solution decreases down the group. D Charge density of cation decreases...
  19. H

    Chemistry MCQ thread...

    its D
  20. H

    Chemistry MCQ thread...

    Astatine (At) is a Group VII element. Its properties are not easily studied due to its short half life and low natural abundance. However, its properties can be deduced from the trends of other Group VII elements. Which of the following statements about astatine are likely to be correct? 1 HAt...
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