9th class guess paper of chemistry
Zahoor ul islam boys high school gujar khan. Class. 10 th . Subject. Chemistry. Year. 2019. (Part-I) QNo.2: Answer any 5 of following? (5×2 = 10) i) Define law of mass action? ii) What do you meant by equilibrium constant? iii) Give 2 characteristics of forward reaction? iv) How direction of reaction can be predicted? v) How BF 3 behaves as Lewisacid? vi) Prove that water is an amphoteric specie? vii) Define pH value. What is pH of pure water? viii) How are soluble salts recovered from water? QNo.2: Answer any 5 of...