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Qormaata galuumsa kutaa 12ffaa Keemistirii, bara 2009 A.L.I (2017)

Gaaffilee dhugaa qormaata galuumsa yunivarsiitii kutaa 12 kan Keemistirii, akkuma barattoonni bara 2009 A.L.I itti fudhatanitti. Tokkoon tokkoon gaaffii deebii sirrii fi ibsa qaba.

Bilisaan shaakaluu jalqabaaWaraqaa gaaffii

  • Damee saayinsii uumamaa

    Eenyutu fudhata

  • 2009 A.L.I (2017)

    Bara qormaataa

  • Gaaffilee 69 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 covalent bonds is the most polar?

  1. A.H - F
  2. B.H - C
  3. C.H - H
  4. D.H - N
Deebii fi ibsa ilaalaa

Deebii: A H - F

Maaliif

The polarity of a covalent bond is determined by the difference in electronegativity between the bonded atoms. The electronegativity difference is greatest between hydrogen (2.2) and fluorine (4.0), making the H-F bond the most polar.

Gaaffii 2

The force that hold different atoms or ions together are called?

  1. A.Electric forces
  2. B.Physical bonds
  3. C.Chemical bond
  4. D.Atomic forces
Deebii fi ibsa ilaalaa

Deebii: C Chemical bond

Maaliif

A chemical bond is the attractive force that holds atoms or ions together to create molecules or compounds.

Gaaffii 3

How many electrons are shared between two atoms in a double bond?

  1. A.2
  2. B.3
  3. C.4
  4. D.6
Deebii fi ibsa ilaalaa

Deebii: C 4

Maaliif

A covalent bond shares pairs of electrons; a single bond consists of 2 shared electrons, while a double bond consists of 2 pairs, which equals 4 shared electrons.

Gaaffii 5

What is the chemical formula of the compound formed by aluminium (III) and sulphate ion, SO42−\mathrm{SO_4^{2-}} ?

  1. A.AlSO4\mathrm{AlSO_4}
  2. B.Al2SO4\mathrm{Al_2SO_4}
  3. C.Al2(SO4)3\mathrm{Al_2(SO_4)_3}
  4. D.Al(SO4)3\mathrm{Al(SO_4)_3}
Deebii fi ibsa ilaalaa

Deebii: C Al2(SO4)3\mathrm{Al_2(SO_4)_3}

Maaliif

Aluminium forms a 3+ cation (Al³⁺) and sulfate is a 2- polyatomic anion (SO₄²⁻). To balance the charges to zero, two Al³⁺ ions combine with three SO₄²⁻ ions to give Al₂(SO₄)₃.

Gaaffii 6

Which of the following is the most reasonable valence- bond structure of the nirocyl chloride (NOCl)? [Figure: The four options are scanned Lewis (electron-dot) structures, one per option, each drawn on a pale lilac background. Option A: ':O - N - Cl' written with capital letters; the O has a pair of dots above it, a pair of dots to its left (drawn as a colon) and a pair of dots below it, and is joined to N by a single horizontal line; the N has a pair of dots above and a pair of dots below, and is joined to Cl by a short single dash; the Cl has a pair of dots above and a pair of dots below. Option B: 'O = N - Cl'; the O has a pair of dots above and a pair of dots below and is joined to N by a double line (two parallel horizontal strokes); the N has one pair of dots above it only; N is joined to Cl by a short single dash; the Cl has a pair of dots above and a pair of dots below. Option C: ': O - N = Cl'; a pair of dots stands to the left of O, and O also has a pair of dots above and a pair of dots below; O is joined to N by a single short dash; N has a pair of dots above and a pair of dots below; N is joined to Cl by a double line; Cl has a pair of dots above and a pair of dots below. Option D: ': O = N Cl'; a pair of dots stands to the left of O and a pair of dots above it; O is joined to N by a double line; N has a pair of dots above and a pair of dots below; Cl stands with no bond line drawn to N and carries a pair of dots above and a pair of dots below. The tick marking the key sits at the end of option B's line.]

  1. A.O and N joined by a single bond, N and Cl joined by a single bond; O carries three lone pairs (above, left and below), N carries two lone pairs (above and below), Cl carries two lone pairs (above and below)
  2. B.O and N joined by a double bond, N and Cl joined by a single bond; O carries two lone pairs (above and below), N carries one lone pair (above), Cl carries two lone pairs (above and below)
  3. C.O and N joined by a single bond, N and Cl joined by a double bond; O carries three lone pairs (left, above and below), N carries two lone pairs (above and below), Cl carries two lone pairs (above and below)
  4. D.O and N joined by a double bond, no bond drawn between N and Cl; O carries two lone pairs (left and above), N carries two lone pairs (above and below), Cl carries two lone pairs (above and below)
Deebii fi ibsa ilaalaa

Deebii: B O and N joined by a double bond, N and Cl joined by a single bond; O carries two lone pairs (above and below), N carries one lone pair (above), Cl carries two lone pairs (above and below)

Maaliif

In nitrosyl chloride (NOCl), nitrogen is the central atom bonded to oxygen via a double bond and to chlorine via a single bond (O=N-Cl), giving each atom a complete octet and minimizing formal charges.

Gaaffii 8

Which of the following is the correct order for electrons filling in orbitals?

  1. A.3s, 3p, 4s, 3d
  2. B.2p, 3s, 3p, 3d
  3. C.3p, 4s, 3d, 5s
  4. D.4s, 3d, 4p, 4d
Deebii fi ibsa ilaalaa

Deebii: A 3s, 3p, 4s, 3d

Maaliif

According to the Aufbau principle (the (n + l) rule), the filling order of orbitals is 3s (n+l = 3), 3p (n+l = 4), 4s (n+l = 4, lower n), and then 3d (n+l = 5).

Qormaata guutuu PDF dhaan buufadhaa

Gaaffilee 69 kuusaa kana keessa jiran hunda akka waraqaa qormaataa maxxanfameetti, furtuu deebii ibsa 65 waliin immoo akka faayilii lammaffaatti. Maxxansaa yookiin daataa malee dubbisaa.

Bilisa; herregas hin gaafatu.

Waraqaa gaaffiiFurtuu 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)2012 A.L.I (2020)2011 A.L.I (2019)2010 A.L.I (2018)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 2009 A.L.I ti?

Eeyyee. Qormaata galuumsa yunivarsiitii biyyaalessaa kan Keemistirii barattoonni bara 2009 A.L.I (2017) fudhatan irraa fudhataman. Kuusaan keenya gaaffilee isaa 69 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 2009 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.

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