class 9 Science SA1

[iphorm id=”7″ name=”doubt form”] Define  sublimation.  Which  type  of  mixtures  are  separated  by  this technique ? A teacher told three students A, B and C to prepare 25% solution (mass by volume) of KOH. Student A dissolved 25g of KOH in 100g of water, student B dissolved 25g of KOH in 100 ml of water