MDCAT/ECAT Chemistry Quiz #1 🧬 | Nomenclature High-Yield Chemistry MCQs💥 Exam-Focused, 🎯 💯 Exam Booster🚀 Practice & Win 190+! 📚 Topper’s Choice

byInamJazbi -
0

👋 Assalamualaikum & Welcome Learners!
💡 I’m Inam Jazbi, and you’re now learning chemistry with InamJazbi Learn Chemistry — your trusted platform for MDCAT & ECAT high-yield preparation.

🔥 This quiz includes TOP most repeated MCQs from Organic Chemistry Nomenclature, specially designed to:
✔ Boost your MDCAT/ECAT score
✔ Strengthen concepts
✔ Improve accuracy & speed
✔ Prepare like real exam

📘 Click each question → choose your answer → get instant ✔ Correct / ✖ Wrong + Explanation!

Let’s start your journey to 190+ score! 🚀 


MDCAT/ECAT Quiz # 1 (Nomenclature) 

1️⃣ Which of the following molecules possess an acyl functional group?
(a) R–CO–X
(b) R–CONH₂
(c) R–COO–CH₃
(d) R–CO–R
Strict acyl group = R–CO–X. Other groups contain carbonyl but aren’t strictly acyl.
2️⃣ A hydrocarbon with molecular formula C₇H₁₂ is possibly:
(a) Heptane
(b) Heptene
(c) Heptyne
(d) Heptadiene
C₇H₁₂ has 2 degrees of unsaturation → can be heptyne or heptadiene.
3️⃣ IUPAC name of CH₃–CH=CH–C≡CH is:
(a) 1-pentyne-3-ene
(b) 3-pentene-1-pentyne
(c) 3-penten-1-yne
(d) 2-penten-3-yne
Double bond gets lowest number → pent-3-en-1-yne.
4️⃣ IUPAC name of isopropyl alcohol is:
(a) 1-propanol
(b) 2-propanol
(c) 1-butanol
(d) 2-butanol
Isopropyl alcohol = CH₃–CHOH–CH₃ → OH on carbon 2.
5️⃣ Resorcinol contains two –OH groups at:
(a) 1,2
(b) 1,3
(c) 1,4
(d) 2,4
Resorcinol = 1,3-dihydroxybenzene (meta isomer).
6️⃣ A saturated hydrocarbon with formula C₄H₈ must be:
(a) Butane
(b) Butene
(c) Butyne
(d) Cyclobutane
C₄H₈ is saturated only if cyclic → cyclobutane.
7️⃣ In IUPAC naming of ketones, the ending “-e” is replaced by:
(a) -yl
(b) -ol
(c) -al
(d) -one
Ketones → replace "-e" with "-one".
8️⃣ Carboxylic acid with 6-carbon straight chain (common name) is:
(a) Propionic acid
(b) Valeric acid
(c) Caproic acid
(d) Capric acid
6-carbon acid = Caproic acid.
9️⃣ The correct structure of 1,3-pentadiene is:
(a) CH₃–CH=CH–CH=CH₂–CH₃
(b) CH₂=CH–CH₂–CH=CH₂
(c) CH₂=CH–CH=CH–CH₃
(d) CH₃–CH=C=CH–CH₃
1,3-pentadiene = CH₂=CH–CH=CH–CH₃.
1️⃣0️⃣ IUPAC name of CH₃COOCH(CH₃)₂ is:
(a) Isopropyl acetate
(b) Isopropyl ethanoate
(c) Ethyl propanoate
(d) Propyl ethanoate
IUPAC name is isopropyl ethanoate. Common name is isopropyl acetate.
1️⃣1️⃣ Write the name of Alkene CH₂=CH−CH=CH₂
(a) 1,3-Butadiene
(b) Buta-1,3-diene
(c) Both a & b
(d) None
Both “1,3-butadiene” and “buta-1,3-diene” are correct names → Hence (c).
1️⃣2️⃣ The derived name of CH₂=CH–CH₂–CO–CH₃ is:
(a) Allyl methyl ketone
(b) 1-pentene-1-one
(c) 4-pentene-2-one
(d) Vinyl acetone
The CH₂=CH–CH₂– group is "allyl", so the derived name is allyl methyl ketone.
1️⃣3️⃣ The IUPAC name of H–CO–NH₂ is:
(a) Formamide
(b) Methanamide
(c) Acetamide
(d) Ethanamide
IUPAC name = alkanamide → H–CO–NH₂ has one carbon → methanamide.
1️⃣4️⃣ Marsh gas was the name given to:
(a) Methane
(b) Ethane
(c) Propane
(d) Butane
Marsh gas is methane formed by anaerobic decomposition in marshes.
1️⃣5️⃣ The structural formula of isopropyl carbinol is:
(a) (CH₃)₂CHOH
(b) CH₃–CHOH–CH₂–CH₃
(c) (CH₃)₂CH–CH₂OH
(d) (CH₃)₃COH
Isopropyl carbinol = isopropyl (CH₃)₂CH– + CH₂OH → (CH₃)₂CH–CH₂OH.
1️⃣6️⃣ The derived name of (CH₃)₄C is:
(a) Neopentane
(b) Tetramethylmethane
(c) 2,2-dimethylpropane
(d) None of these
Derived naming uses methane as parent → tetramethylmethane.
1️⃣7️⃣ The IUPAC name for H₂C=CH–CH=CH₂ is:
(a) Buta-1,3-diene
(b) Pent-1-en-3-yne
(c) But-1-en-3-yne
(d) Penta-1,3-diene
Two double bonds in a 4-carbon chain → buta-1,3-diene.
1️⃣8️⃣ The IUPAC name for sec-butyl alcohol is:
(a) 2-ethylbutan-1-ol
(b) 2-ethylbutan-1-ol
(c) Butan-1-ol
(d) Butan-2-ol
sec-Butyl alcohol has OH on carbon-2 → butan-2-ol.
1️⃣9️⃣ The structural formula of methyl ethanonate is:
(a) CH₃–COO–CH₃
(b) CH₃–OOC–CH₃
(c) CH₃–CO–OH
(d) Both a and b
Methyl ethanonate = methyl ethanoate → both (a) and (b) represent the ester.
2️⃣0️⃣ The IUPAC name of CH₃–CO–NH₂ is:
(a) Acetamide
(b) Ethanamide
(c) Formamide
(d) Benzamide
CH₃–CO–NH₂ has 2 carbons → IUPAC: Ethanamide (common name: acetamide).
2️⃣1️⃣ The structural formula of ethanoyl chloride is:
(a) CH₃–CO–Cl
(b) CH₃–COO–Cl
(c) CH₃–CO–NH₂
(d) CH₃COOCH₃
Ethanoyl chloride is CH₃–C(=O)–Cl → derived from ethanoic acid by replacing –OH with Cl.
2️⃣2️⃣ Three fused benzene rings are found in:
(a) Naphthalene
(b) Triphenylmethane
(c) Phenanthroline
(d) Anthracene
Anthracene has three benzene rings fused linearly. Others do not have three fused benzene rings.
2️⃣3️⃣ The IUPAC name of CH₃–O–CH₂–CH₃ is:
(a) Ethyl methyl ether
(b) Methyl ethyl ether
(c) Methoxyethane
(d) Ethoxymethane
Methoxy = CH₃O– group + ethane → Methoxyethane (IUPAC name).
2️⃣4️⃣ Which of the following is a gem dihalide?
(a) CH₃CHBrCHBrCH₃
(b) BrCH₂CH₂Br
(c) CH₃CHBr₂
(d) BrCH=CHBr
Geminal dihalides have both halogens on the same carbon → CH₃CHBr₂.
2️⃣5️⃣ In common system, a carboxylic acid with six carbons is named:
(a) Propionic acid
(b) Butyric acid
(c) Caproic acid
(d) Valeric acid
Hexanoic acid (6 carbons) is called caproic acid in the common system.
2️⃣6️⃣ Which of the following compounds contains the –OH group?
(a) Glycerine
(b) 1,2-ethanediol
(c) Ethyl alcohol
(d) All of these
All listed compounds contain hydroxyl (–OH) groups: mono-, di-, or triols.
2️⃣7️⃣ Which compound represents acrylonitrile?
(a) Cyanoethene
(b) Prop-2-enenitrile
(c) Vinyl cyanide
(d) All of these
All names refer to CH₂=CH–CN, which is acrylonitrile.
2️⃣8️⃣ A hydrocarbon with formula C₄H₆ could be:
(a) Butyne
(b) Cyclobutene
(c) Butadiene
(d) All of these
C₄H₆ fits alkynes, cycloalkenes, and dienes → all are possible.
2️⃣9️⃣ The IUPAC name of CH₃CH₂OCH₂CH₃ is:
(a) Ethoxyethane
(b) Ethyl methyl ether
(c) Diethyl ether
(d) Ethyl alcohol
Symmetrical ether with two ethyl groups → Ethoxyethane (IUPAC).
3️⃣0️⃣ The IUPAC name of CH₃COOCH₃ is:
(a) Methyl acetate
(b) Methyl ethanoate
(c) Methyl methanoate
(d) Acetic acid
CH₃COOCH₃ = ester of methanol + ethanoic acid → Methyl ethanoate (IUPAC).

#MDCAT #ECAT #ChemistryQuiz #InamJazbi #LearnChemistry #NomenclatureMCQs #MDCAT2025 #ECATPrep #EntryTest #OrganicChemistry #MCQsPractice #PakistanStudents #FScChemistry


⭐جون ایلیا ۔ غزل⭐

آپ اپنا غبار تھے ہم تو

یاد تھے یادگار تھے ہم تو

پردگی! ہم سے کیوں رکھا پردہ

تیرے ہی پردہ دار تھے ہم تو

وقت کی دھوپ میں تمہارے لیے

شجرِ سایہ دار تھے ہم تو

اُڑتے جاتے ہیں دُھول کے مانند

آندھیوں پر سوار تھے ہم تو

ہم نے کیوں خود پہ اعتبار کیا

سخت بے اعتبار تھے ہم تو

شرم ہے اپنی بار باری کی

بے سبب بار بار تھے ہم تو

کیوں ہمیں کر دیا گیا مجبور

خود ہی بے اختیار تھے ہم تو

تم نے کیسے بُھلا دیا ہم کو

تم سے ہی مستعار تھے ہم تو

خوش نہ آیا ہمیں جیے جانا

لمحے لمحے پہ بار تھے ہم تو

سہہ بھی لیتے ہمارے طعنوں کو

جانِ من جاں نثار تھے ہم تو

خود کو دورانِ حال میں اپنے

بے طرح ناگوار تھے ہم تو

تم نے ہم کو بھی کر دیا برباد

نادرِ روزگار تھے ہم تو

ہم کو یاروں نے یاد بھی نہ رکھا

جون یاروں کے یار تھے ہم تو

جون ایلیا



Tags

You may like these posts

Post a Comment

Previous Post Next Post