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 electronegativity of carbon is	2.5 2.0 1.0 4.0
2	Electronegativity of oxygen is.	3,1 3,3 3.4 3,2
3	Which one of the followign halogns has highest electronegativity	Iodine Fluorine Chlorine Bromine
4	The ability of an atom to attract the shared pair of electons towards itself in a molecule is called	Ionization energy Electronietativity Shielding effect Electron affinity
5	Electron affinity of fluorine in kJmol-1 is	-328 328 -330 -340
6	Uni of electron affinity is.	k J mol-1 k jmol pm Newton
7	When we mvoe from left to right in a period, ionization energy.	No effect Decreases Increases None of these
8	When we mvoe top to bottom in group, ionization energy.	Increases No effet Decreases None of these
9	The unit of ionization energy is	nm and pm kJ mol-1 Pascal Newton
10	The minium amont of energy whcih is required to remvoe an electron from valence shell of the gaseous state of an atom is called.	Potential energy Ionization energy Electron affinity Electronegativity
11	When we mvoe from top to bottom in a group atomic size.	Decrease Increases First increases then decreases None of the above
12	When we move form left to right in a period, atomic number	Decreases Increases First increases then decreases None of the above