Notes Class 9 Science Karachi

  Q - 1)    What is Scientific method? Write the name of its four stages and describe them: Scientific Method: A specific method that is used to search for truth or facts. And: It is based on observation, hypothesis, theory and scientific laws . Observation: It is the basic tool for explaining a phenomenon but it may vary from person to person according to his skill. Hypothesis: The statement may be possible answer of the problems after observation.  It is also the trail idea for accumulating of more knowledge or facts. Theory: It is the verified results by hypothesis, which is obtained with the help of careful experimentation. Scientific law: When a theory is tasted repeatedly and is found to fit according to facts, gave valued predictions is called Scientific law. Q - 2)    Write down the contribution of Muslim scientists in the field of Chemistry: Jabir – ibne – Hayyan: (721 – 803 A.D.) He is known as the father of chemistry. í ...

  Q - 1)    Define chemistry? Write the name of its branches: Ans: Chemistry is the branch of science that deals with the properties, compositions and structure of matter. It also deals with principles and the laws governing the changes involved in the matter. The names of its branches are as follow: 1.        Physical chemistry 2.        Organic chemistry 3.        Inorganic chemistry 4.        Bio chemistry 5.        Analytical chemistry 6.        Industrial or applies chemistry 7.        Nuclear chemistry 8.        Polymeric chemistry 9.        Environmental chemistry ...

Education System In Karachi Schooling assumes a fundamental part in the advancement of any country and is answerable for its headway towards progress. That is the reason the originator of Pakistan Quaid-e-Azam Muhammad Ali Jinnah laid incredible weight on  obtaining instruction. He once said while tending to the understudies:  "Schooling involves life and demise for our country"  The constitution of Pakistan has likewise given the privilege of instruction to each Pakistani. The article 25-A of the constitution of Pakistan says:  "The state will give free and necessary instruction to all offspring of the age five to sixteen years in such a way as might be controlled by the law "  Disregarding every one of the accentuations on obtaining instruction, very little has been done this respect. In Sindh, The public authority has made a few moves to advance instruction like giving free books and getting individuals to mindful about instructive program exhaustive media....