Waraqaalee qormaataa

Qormaata galuumsa kutaa 12ffaa Keemistirii, bara 2016 A.L.I (2024)

Gaaffilee dhugaa qormaata galuumsa yunivarsiitii kutaa 12 kan Keemistirii, akkuma barattoonni bara 2016 A.L.I itti fudhatanitti. Tokkoon tokkoon gaaffii deebii sirrii fi ibsa qaba.

Bilisaan shaakaluu jalqabaa Waraqaa gaaffii

Damee saayinsii uumamaa
Eenyutu fudhata
2016 A.L.I (2024)
Bara qormaataa
Gaaffilee 72 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

What are the molecular formulae of an alkene and alkyne containing seven carbon atoms, respectively?

A.C 7 H 14 and C 7 H 12
B.C 7 H 16 and C 7 H 14
C.C 7 H 14 and C 7 H 16
D.C 7 H 12 and C 7 H 14

Deebii fi ibsa ilaalaa

Deebii: A C 7 H 14 and C 7 H 12

Maaliif

Alkenes follow the general formula CnH2n (so for n=7, C7H14) and alkynes follow CnH2n-2 (so for n=7, C7H12).

Gaaffii 2

Which of the following is the CORRECT method of preparation of alkenes in the laboratory?

A.Alkylation of sodium acetylide with a primary alkyl halide.
B.Heating of sodium salt of an organic acid with soda lime.
C.Reaction of halogenated alkane with sodium.
D.Dehydration of alcohols with concentrated sulfuric acid.

Deebii fi ibsa ilaalaa

Deebii: D Dehydration of alcohols with concentrated sulfuric acid.

Maaliif

Dehydration of alcohols using a strong acid catalyst like concentrated sulfuric acid is a standard laboratory method to prepare alkenes.

Gaaffii 4

Which of the following is the product of fractional distillation of crude oil?

A.Producer gas
B.Naphthalene
C.Water gas
D.Kerosene

Deebii fi ibsa ilaalaa

Deebii: D Kerosene

Maaliif

Kerosene is a major fraction obtained directly from the fractional distillation of crude oil, whereas producer gas and water gas are manufactured from coal or coke.

Gaaffii 5

What is the molecular formula and IUPAC name of a saturated monocarboxylic acid having six carbon atoms?

A.C 5 H 11 COOH, heptanoic acid
B.C 6 H 13 COOH, heptanoic acid
C.C 5 H 11 COOH, hexanoic acid
D.C 6 H 13 COOH, hexanoic acid

Deebii fi ibsa ilaalaa

Deebii: C C 5 H 11 COOH, hexanoic acid

Maaliif

A saturated monocarboxylic acid with six carbon atoms has the IUPAC name hexanoic acid, and its molecular formula is C5H11COOH (since one of the six carbons is in the carboxyl group).

Gaaffii 7

During summer, the average value for the temperature measured in a certain chemistry laboratory is 298.15 K. How many decimal places are there in the measured value?

Deebii fi ibsa ilaalaa

Deebii: C 2

Maaliif

The measured value 298.15 K has two digits after the decimal point, meaning there are 2 decimal places.

Gaaffii 8

Which of the following is the CORRECT Lewis electron -dot symbol of MgO? (Atomic number: Mg = 12 and O = 8)

A.Mg + : .. O : .. 2-
B.Mg +2 : .. O : .. -
C.Mg + : .. O : .. -
D.Mg +2 : .. O : .. 2-

Deebii fi ibsa ilaalaa

Deebii: D Mg +2 : .. O : .. 2-

Maaliif

Magnesium oxide is an ionic compound where Mg transfers its 2 valence electrons to O, forming Mg2+ and an oxide ion (O2-) with a complete octet of 8 valence electrons.

Qormaata guutuu PDF dhaan buufadhaa

Gaaffilee 72 kuusaa kana keessa jiran hunda akka waraqaa qormaataa maxxanfameetti, furtuu deebii ibsa 72 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)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 2016 A.L.I ti?

Eeyyee. Qormaata galuumsa yunivarsiitii biyyaalessaa kan Keemistirii barattoonni bara 2016 A.L.I (2024) fudhatan irraa fudhataman. Kuusaan keenya gaaffilee isaa 72 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 2016 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.