NEET UG Organic: Basics & Hydrocarbons: Organic Chemistry – Some Basic Principles and Techniques – Chapter Test
NEET UG Organic: Basics & Hydrocarbons: Organic Chemistry – Some Basic Principles and Techniques – Chapter Test is an online chapter test in the NEET UG pattern, covering Organic: Basics & Hydrocarbons. Attempt it on SeatBeat with a timer like the real exam, then see a detailed solution for every question and your score and weak-topic analysis.
Topics in this test
| Topic | Questions |
|---|---|
| Organic: Basics & Hydrocarbons | 20 |
Difficulty: 10 medium · 10 hard
Organic Chemistry – Some Basic Principles and Techniques MCQ questions with answers
The first 3 of 20 questions. Unlock the series for the rest, each with a solution.
Q1. What is the correct IUPAC name of the compound (CH3)2CH–CH2–CH(CH3)–COOH?
यौगिक (CH3)2CH–CH2–CH(CH3)–COOH का सही IUPAC नाम क्या है?
- A. 3,5-dimethylpentanoic acid / 3,5-डाइमेथिलपेन्टैनोइक अम्ल
- B. 2,4-dimethylpentanoic acid / 2,4-डाइमेथिलपेन्टैनोइक अम्ल
- C. 2,4-dimethylhexanoic acid / 2,4-डाइमेथिलहेक्सैनोइक अम्ल
- D. 2,4-dimethylbutanoic acid / 2,4-डाइमेथिलब्यूटैनोइक अम्ल
Solution
The principal chain containing –COOH is five carbons long (pentanoic acid) with methyl groups at C-2 and C-4, giving 2,4-dimethylpentanoic acid.
–COOH युक्त मुख्य श्रृंखला पाँच कार्बन लंबी है (पेन्टैनोइक अम्ल) जिसमें C-2 और C-4 पर मेथिल समूह हैं, जिससे 2,4-डाइमेथिलपेन्टैनोइक अम्ल प्राप्त होता है।
Q2. In which method is the nitrogen content of an organic compound determined by measuring the volume of nitrogen gas liberated on heating with copper oxide?
किस विधि में किसी कार्बनिक यौगिक की नाइट्रोजन मात्रा का निर्धारण कॉपर ऑक्साइड के साथ गर्म करने पर मुक्त हुई नाइट्रोजन गैस के आयतन को मापकर किया जाता है?
- A. Liebig's method / लीबिग विधि
- B. Carius method / कैरियस विधि
- C. Duma's method / ड्यूमा विधि
- D. Kjeldahl's method / केल्डाल विधि
Solution
Duma's method oxidises the compound with CuO so that nitrogen is set free as N2 gas, whose volume is measured; Kjeldahl's measures nitrogen as ammonia, while the Carius and Liebig methods estimate halogens and carbon/hydrogen respectively.
ड्यूमा विधि में यौगिक का CuO द्वारा ऑक्सीकरण किया जाता है जिससे नाइट्रोजन N2 गैस के रूप में मुक्त हो जाती है, जिसका आयतन मापा जाता है; केल्डाल विधि नाइट्रोजन को अमोनिया के रूप में मापती है, जबकि कैरियस और लीबिग विधियाँ क्रमशः हैलोजन तथा कार्बन/हाइड्रोजन का आकलन करती हैं।
Q3. What is the correct IUPAC name of the compound (CH3)2CH–CH2Br?
यौगिक (CH3)2CH–CH2Br का सही IUPAC नाम क्या है?
- A. 1-bromo-2-methylbutane / 1-ब्रोमो-2-मेथिलब्यूटेन
- B. 1-bromo-2-methylpropane / 1-ब्रोमो-2-मेथिलप्रोपेन
- C. 2-methyl-1-bromopropane / 2-मेथिल-1-ब्रोमोप्रोपेन
- D. 2-bromo-1-methylpropane / 2-ब्रोमो-1-मेथिलप्रोपेन
Solution
The parent chain is propane; numbering so that bromine gets the lowest locant gives 1-bromo-2-methylpropane, with substituents cited alphabetically (bromo before methyl).
मूल श्रृंखला प्रोपेन है; ब्रोमीन को निम्नतम अंक देने के लिए संख्यांकन करने पर 1-ब्रोमो-2-मेथिलप्रोपेन प्राप्त होता है, जिसमें प्रतिस्थापियों को वर्णक्रम के अनुसार (मेथिल से पहले ब्रोमो) उद्धृत किया जाता है।
Frequently asked questions
How many questions are in the NEET UG Organic: Basics & Hydrocarbons: Organic Chemistry – Some Basic Principles and Techniques – Chapter Test?
20 questions for 20 marks, to be answered in 20 minutes.
Is there negative marking in the NEET UG Organic: Basics & Hydrocarbons: Organic Chemistry – Some Basic Principles and Techniques – Chapter Test?
Yes — 0.25 marks are deducted for each wrong answer, as in the real exam pattern.
Which topics does the NEET UG Organic: Basics & Hydrocarbons: Organic Chemistry – Some Basic Principles and Techniques – Chapter Test cover?
Organic: Basics & Hydrocarbons (20 questions).
Is the NEET UG Organic: Basics & Hydrocarbons: Organic Chemistry – Some Basic Principles and Techniques – Chapter Test free?
It is part of the NEET UG 2027 Mock Test Series (134 tests, ₹299). You can first try Biology in Human Welfare – Topic Test for free.
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