Waraqaalee qormaataa

Qormaata galuumsa kutaa 12ffaa Keemistirii, bara 2018 A.L.I (2026)

Gaaffilee dhugaa qormaata galuumsa yunivarsiitii kutaa 12 kan Keemistirii, akkuma barattoonni bara 2018 A.L.I itti fudhatanitti. Tokkoon tokkoon gaaffii deebii sirrii fi ibsa qaba.

Bilisaan shaakaluu jalqabaa Waraqaa gaaffii

Damee saayinsii uumamaa
Eenyutu fudhata
2018 A.L.I (2026)
Bara qormaataa
Gaaffilee 75 deebii waliin
Kuusaa kana keessa

Gaaffilee qormaata kanaa yaalaa

Deebii banuun dura tokkoon tokkoon gaaffii ofii keessaniin deebisaa. Ibsi gara kutaa kitaaba barnootaa sirriitti waan qajeelchuuf, yeroo gaaffii dogoggortan fuula kam irra deebi'uu akka qabdan ni beektu.

Gaaffii 1

Which of the following sub atomic particle is used to determine chemical properties of elements?

A.proton
B.electron
C.Nucleus
D.Neutron

Deebii fi ibsa ilaalaa

Deebii: B electron

Maaliif

Electrons, particularly valence electrons in the outermost shell, are involved in chemical bonding and reactions, and therefore determine the chemical properties of elements.

Gaaffii 2

An element has two isotopes with masses of 62.93 amu (69.17%) and 64.93 amu (30.83%). What is the average atomic mass?

A.64.54 amu
B.63.54 amu
C.63.93 amu
D.64.93 amu

Deebii fi ibsa ilaalaa

Deebii: B 63.54 amu

Maaliif

The average atomic mass is calculated as (62.93 amu * 0.6917) + (64.93 amu * 0.3083) = 43.53 + 20.02 = 63.55 amu, which rounds closely to 63.54 amu.

Gaaffii 3

What is the effect of increasing atomic size on electronegativity down a group of periodic table?

A.The electronegativity increases because the atomic energy level increases.
B.The electronegativity increases because the atomic number increases.
C.The electronegativity decreases because the atomic size increases.
D.The electronegativity decreases because the atomic size decreases.

Deebii fi ibsa ilaalaa

Deebii: C The electronegativity decreases because the atomic size increases.

Maaliif

As you go down a group, atomic size increases due to the addition of electron shells, which increases the distance between the nucleus and valence electrons, thereby decreasing the electronegativity.

Gaaffii 4

The periodic table contains two separate rows of inner transition elements located below the main table. These rows contain 14 elements each and belong to the 6th and 7th periods. Based on their position and electron configurations, which pair of element series correctly corresponds to 6th and 7th periods?

A.Halogenes, Nobel gas
B.lanthanoids, actinoids
C.chalcogens, halogens
D.actinoids, halogens

Deebii fi ibsa ilaalaa

Deebii: B lanthanoids, actinoids

Maaliif

The lanthanoids (atomic numbers 57 to 71) belong to the 6th period, while the actinoids (atomic numbers 89 to 103) belong to the 7th period, and both series are placed below the main periodic table.

Gaaffii 5

Aluminum reacts with a certain nonmetallic element, X to form a compound with the general formula AlX. Element X is a diatomic gas at room temperature. Element X must be

A.sulfur
B.fluorine
C.Bromine
D.Nitrogen

Deebii fi ibsa ilaalaa

Deebii: D Nitrogen

Maaliif

Aluminum has a +3 oxidation state, so for the neutral 1:1 compound AlX, X must have a -3 oxidation state. Nitrogen (N) is a diatomic gas (N2) at room temperature and typically forms a -3 nitride ion, yielding AlN.

Gaaffii 6

Ammonium ion (NH₄⁺) is formed when ammonia (NH₃) reacts with a hydrogen ion (H⁺). Which statement correctly analyzes the bond formed in the ammonium ion (NH₄⁺)?

A.All N–H bonds are ionic because the ion carries an overall positive charge.
B.N–H bond is formed when nitrogen donates a lone pair of electrons to a hydrogen ion.
C.N–H bonds are formed by transfer of electrons from hydrogen to nitrogen atom
D.The positive charge causes all bonds in the ion to become nonpolar covalent bonds.

Deebii fi ibsa ilaalaa

Deebii: B N–H bond is formed when nitrogen donates a lone pair of electrons to a hydrogen ion.

Maaliif

The ammonium ion (NH4+) is formed via a coordinate covalent bond where the nitrogen atom of ammonia donates its lone pair of electrons to the empty orbital of a hydrogen ion (H+).

Qormaata guutuu PDF dhaan buufadhaa

Gaaffilee 75 kuusaa kana keessa jiran hunda akka waraqaa qormaataa maxxanfameetti, furtuu deebii ibsa 75 waliin immoo akka faayilii lammaffaatti. Maxxansaa yookiin daataa malee dubbisaa.

Bilisa; herregas hin gaafatu.

Waraqaa gaaffii Furtuu deebii fi ibsa

Qormaata guutuu sa'aatiin daangeffamee hojjedhaa

Herregni Temari bilisaa qormaata Keemistirii guutuu fi kan waggoota biroo hunda qormaatilee fakkeenyaa sa'aatiin daangeffaman godhee qabxii battalumaa waliin isiniif kenna. Bilbila kamiyyuu irratti, walitti hidhamiinsa laafaa irrattillee ni hojjeta.

Bilisaan shaakaluu jalqabaa

Qormaatilee Keemistirii kan waggoota biroo

2017 A.L.I (2025)2016 A.L.I (2024)2015 A.L.I (2023)2014 A.L.I (2022)2013 A.L.I (2021)2012 A.L.I (2020)2011 A.L.I (2019)2010 A.L.I (2018)2009 A.L.I (2017)2008 A.L.I (2016)2007 A.L.I (2015)2006 A.L.I (2014)2005 A.L.I (2013)

Qormaata kana taa'uu dura Keemistirii qayyabadhu

Yaadannoon gabaabaan Keemistirii kutaa 12 kaardii 22 qaba. Tokkoon tokkoon boqonnaa boqonnaadhaan kitaaba biyyaalessaa irraa qophaa'ee seericha, mallattoowwan isaa maal bakka akka bu'an fi dogoggora qabxii nama dhabsiisu ni ibsa.

Yaadannoo Keemistirii bani

Kunneen gaaffilee dhugaa qormaata galuumsa Keemistirii bara 2018 A.L.I ti?

Eeyyee. Qormaata galuumsa yunivarsiitii biyyaalessaa kan Keemistirii barattoonni bara 2018 A.L.I (2026) fudhatan irraa fudhataman. Kuusaan keenya gaaffilee isaa 75 qaba; tokkoon tokkoon isaanii deebii fi ibsa gara kitaaba barnootaatti qajeelchu qabu.

Qormaata guutuu akkamittan shaakala?

Lakkoofsa bilbilaatiin herrega bilisaa banadhaa. Qormaatichi guutuun qormaata fakkeenyaa sa'aatiin daangeffame ta'ee qabxii battalumaa kenna; fooyya'iinsi gargaaraa AI ji'atti qarshii 199 kan ta'e waan isin jalaa darbe hunda isinii ibsa.

Qormaata Keemistirii bara 2018 A.L.I PDF dhaan buufachuu nan danda'aa?

Eeyyee; bilisas. Waraqaan gaaffii faayilii tokko, furtuun deebii ibsa isaa waliin immoo faayilii biraa ti; kanaaf qormaata dursitanii yaaluu dandeessu. Maxxansaa, yookiin yeroo daataan hin jirre irra deebiif bilbila keessan irratti kaa'adhaa.