pls give me the question paper for post mid term class 9. science
Answers
Hey mate !
here is the post mid term question paper of class 9 science
Few sample questions from the Question Paper are given below:
Q. Which postulate of Dalton's atomic theory forms the basis of the law of conservation of mass?
Q. Calculate the mass of carbon dioxide formed on burning 12 g of carbon in the presence of 32 g of oxygen.
Q. There is an increase in the energy of the atom whenever an electron jumps from lower level to the higher level. Why?
Q. (a) State the law of constant proportions.
(b) Magnesium and oxygen combine in the ratio of 3 : 2 by mass to form magnesium oxide. Calculate the mass of oxygen required to react completely with 12 g of magnesium.
CBSE Class 9 Science Syllabus 2018-2019
Q. (a) An atom of an element X may be represented as.
(i) What is the atomic number of the element?
(ii) What is the number of neutrons in atom X?
(iii) Write the name and electronic configuration of the element.
(iv) State whether the element is a metal or a non-metal.
(v) What type of ion will be formed by atom X and why?