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 atomic radii of the elemtns in periodic table.	Increase from left to right in a period Do not chage from left to right in a period Increase from top to bottom in a group Decrease from top to bottom in a group
2	All the elements of Group II A are less reactive than alkali metals. This is because these elements have.	Decreased nuclear charge Similar electronci configuration High ionization energies Relatively greatr atomic size.
3	Period nuber of ²⁷ Al ₁₃ is	1 2 3 4
4	Main group elements are arranged in ..............groups.	7 6 8 10
5	Which of the following element belong to VIII A.	Xe Mg Br Na
6	Which of the following grops contain alkaline earth metals.	I A II A VII A VIII A
7	Number of peiod in the periodic table are.	7 8 5 16
8	When we mvoe form left to right in a period, atomic size.	Increases Decreases First increases then decreased None of the above
9	The element having less value of ionizatin energy and less value of electron affinity is likely to belong to.	Group1 Group 13 Group 16 Group 17
10	Which element has the highest melting point.	K Cs Na Rb
11	Which element is the most reactive element?	Florine Oxygen Chlorine Nitrogen
12	How many electrons can nitrogen accept in its outermost shell.	2 3 4 5