Category: Chemistry

  • What is atomic number and chemical symbol of oxygen?

    Give correct atomic number, chemical symbol, and brief explanation. Also state its group and period in periodic table.

  • Old stp /NTP and new stp/ntp

    Old typeof stp NTP and new stp/NTP with formula and some likely esay consept by me. I think you shall understand properly from my pdf file..

  • Stp or NTP

    Old typeof stp /NTP and new type of stp /NTP with formula and easy consept by me .I think you shall understand properly from my pdf file..

  • Stp or ntp

    Old stp/NTP and new stp/ NTP .with formula and some examples.i think you shall understand properly from my pdf

  • Chemistry Question

    Examen Parcial EQ 2025 II – UPCH

  • Chemistry Question

    what will happen if burning candle is brought close to the mouth of the test tubes

  • Chemistry Question

    Class 10th chemistry chapter 1 notes PDF 20 page

  • Given below are two statements

    Statement I : Addition of HCN in acetaldehyde gives optically active product.

    Statement II : Acetone gives optically inactive products on nucelophilic addition of HCN

    In the right of above statement choose the correct option.

    (1)Both statement I and II are correct

    (2) Both statement I and II are incorrect

    (3) Statement I is correct but statement II is incorrect

    (4)Statement I is incorrect but statement II is correct

  • Ionic compounds they are solid and hard dur to strong force…

    Also ionic compounds are have high melting ir boiling is high . Solubility generally soluble in water or insoluble in organic solvents petrol, kerosene etc.

  • Chemistry Question

    Ans: Azeotropes are the binary mixtures of solutions created after some liquids are mixed. These binary mixtures contain similar compositions in liquid and vapour phases at a steady boiling temperature. It is not feasible to segregate the components by fractional distillation.

    Minimum Boiling Azeotropes Solutions that present a huge positive deviation from Raoults law at a specific composition create minimum boiling azeotrope. For example, a water and ethanol mixture.

    Maximum Boiling Azeotropes Solutions that present a huge negative deviation from Raoults law at a specific composition create maximum boiling azeotrope. For example, water and HCl mixture