Qormaatilee darban

Qormaata galuumsa Keemistirii, bara 2005 A.L.I (2013)

Gaaffilee dhugaa qormaata galuumsa yunivarsiitii kutaa 12 kan Keemistirii, akkuma barattoonni bara 2005 A.L.I itti fudhatanitti. Tokkoon tokkoon gaaffii deebii sirrii fi ibsa qaba.

Bilisaan shaakaluu jalqabaa Waraqaa gaaffii

Damee saayinsii uumamaa
Eenyutu fudhata
2005 A.L.I (2013)
Bara qormaataa
Gaaffilee 74 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 is NOT a basic SI unit?

A.Candela
B.Gram
C.Mole
D.Second

Deebii fi ibsa ilaalaa

Deebii: B Gram

Maaliif

The seven SI base units include the candela for luminous intensity, the mole for amount of substance and the second for time. The base unit of mass is the kilogram, so the gram is a fraction of a base unit and not a base unit itself. The mole tempts a lot of students because it feels like a counting label rather than a measurement, but amount of substance is one of the seven base quantities.

Gaaffii 2

Which of the following statements is TRUE?

A.Ultraviolet light has longer wavelength than visible light.
B.The energy of radiation decreases as the wavelength decreases.
C.The frequency of radiation increases as the wavelength decreases.
D.Wave number of an electromagnetic radiation increases as wavelength increases.

Deebii fi ibsa ilaalaa

Deebii: C The frequency of radiation increases as the wavelength decreases.

Maaliif

Wavelength and frequency are tied together by \(c = \nu\lambda\), and the speed of light \(c\) is fixed. Rearranged, \(\nu = c/\lambda\), so when the wavelength gets shorter the frequency must get higher. Option B tempts because energy and wavelength sound like they should rise together, but \(E = hc/\lambda\) shows the energy goes up when the wavelength goes down.

Gaaffii 3

Which of the following ionic compounds is formed from the reaction between magnesium and nitrogen?

A.\(\mathrm{MgN_2}\)
B.\(\mathrm{Mg_2N_2}\)
C.\(\mathrm{Mg_3N_2}\)
D.\(\mathrm{Mg_2N_3}\)

Deebii fi ibsa ilaalaa

Deebii: C \(\mathrm{Mg_3N_2}\)

Maaliif

Magnesium is in group IIA and loses two electrons to give \(\mathrm{Mg^{2+}}\). Nitrogen gains three electrons to give \(\mathrm{N^{3-}}\). The compound must be electrically neutral, so three \(\mathrm{Mg^{2+}}\) ions carrying \(+6\) pair with two \(\mathrm{N^{3-}}\) ions carrying \(-6\), which gives \(\mathrm{Mg_3N_2}\). Option A tempts if you copy the 2 from the \(\mathrm{N_2}\) gas, but the subscripts in an ionic formula come from the charges.

Gaaffii 4

Which of the following molecules represents a non-polar covalent bond?

A.B-Cl
B.C-Cl
C.Cl-Cl
D.Mg-Cl

Deebii fi ibsa ilaalaa

Deebii: C Cl-Cl

Maaliif

A bond is non-polar when both atoms pull on the shared pair with the same strength. Two chlorine atoms have identical electronegativity, so the difference is zero and the electron pair sits in the middle. C-Cl is the tempting choice because carbon and chlorine are both non-metals, but their electronegativities differ by about 0.5, so that bond is polar covalent.

Gaaffii 5

Which of the following groups in the periodic table has paramagnetic atoms?

A.Group zero
B.Group IIA
C.Group IIB
D.Group IVA

Deebii fi ibsa ilaalaa

Deebii: D Group IVA

Maaliif

Paramagnetic means the atom holds at least one unpaired electron. Group IVA atoms end in \(ns^2np^2\), and by Hund's rule those two p electrons go into separate orbitals with parallel spins, so two electrons stay unpaired. Group zero, IIA and IIB all finish with completely filled subshells, so every electron is paired and they are diamagnetic. Group IIB tempts because of its d electrons, but that \(d^{10}\) subshell is full.

Gaaffii 6

How many types of cubic unit cells are known?

Deebii fi ibsa ilaalaa

Deebii: B 3

Maaliif

A cubic lattice can arrange its points in three ways: at the eight corners only (simple cubic), corners plus one point at the centre of the cube (body centred), or corners plus one point at the centre of each face (face centred). No other arrangement keeps full cubic symmetry. Four is a common guess from students who add an edge centred cell, but that pattern is the same as one of the three already counted.

Qormaata guutuu PDF dhaan buufadhaa

Gaaffilee 74 kuusaa kana keessa jiran hunda akka waraqaa qormaataa maxxanfameetti, furtuu deebii ibsa 73 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

2018 A.L.I (2026)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)

Qormaata kana taa'uu dura Keemistirii qayyabadhu

Yaadannoon gabaabaan Keemistirii kutaa 12 kaardii 21 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 2005 A.L.I ti?

Eeyyee. Qormaata galuumsa yunivarsiitii biyyaalessaa kan Keemistirii barattoonni bara 2005 A.L.I (2013) fudhatan irraa fudhataman. Kuusaan keenya gaaffilee isaa 74 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 2005 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.