9th Class Chemistry Chapter 8 Online MCQ Test With Answers PDF English Medium (Chemical Reactivity)

Chemistry 9th Class English Medium Unit 8 Online Test

Sr. #	Questions	Answers Choice
1	The distance between the neclei of two carbon atoms in its elemetnal from is	150 pm 152 pm 154 pm 156 pm
2	Unit of atomic size is	pm nm kJmol-1 Both a and b
3	Point out the incorrect statement about electron affinity	It decreases in a period It decreases in a group It is measure din kJmol-1 None of these
4	Mark the icorrect statement about ionization energy.	It is measured in kJmol-1 It is absorption of energy It decreased in a period It decrese in a group
5	Aong the period which one of the followig decreases.	Electronegativity Ionization energy Atomic radius Electron affinity
6	The amoutn of energy given out when an electron is added to an eatom is called.	Electron affinity Lattice energy Ionization energy Electronegativity
7	The elements of a group show properties.	Same Different Both a and b None of these
8	Elements of a period show properties.	Same Different Both a and b<div><br></div> None of these
9	Which halogen memebr exists in a liquid stte at room temperature	Bromine Chlorine Fluroine Iodine
10	Which is strongest oxidizing agent.	Cholorine Iodine Fluorine Bromine
11	Elements o group 13 to 18 have thier valence electrons is subshell	s p f d
12	With the increase of atomic numebr , the number of electron in an atom also.	Decreases First increases then decreases Increases None of the above