SCIENCE CLASS10[CBSE]

SCIENCE CLASS10 TEST ACID –BASE &SALTS Q1.Name an alkali solution which has no metallic ions. Q2.What are organic acids ? Give two examples. Q3You are provided with 1 molar HCl &1molar acetic acid solution.Which of the two are likely to have higher Ph value &why? Q4.What is the importance of Ph in acquatic life? Q5.A solution has Ph 8.To it is added another solution A,then the Ph drops to 3.Is the solution A acidic or basic in nature ? Is the pH of the solution lesser or more than 3? Q6.Write ionic equations to show the presence of ions in aqueous solution of [1]Sodium Hydroxide[2]Barium Hydroxide. Q7.Why Aluminium oxide & zinc oxide are called amphoteric oxide? Q8.State the chemical property on which the fillowing use of baking soda are based. [a]As an ant acid [b]As a constitutent of Baking powder. Q9.What happens when carbon dioxide is passed through ammonical Brine? Write Chemical equation. Q10.Explain observation ,by giving chemical equation when carbon dioxide is passed through lime water [a]for 1 minute.[b]for more than 5 minutes.