Posts

class xii chemistry chapter Aldyhide, ketones and carboxylic acids

Class xii  Subject :- Chemistry  Chapter :- Aldyhide, ketones and carboxylic acids  INTEXT QUESTIONS  12.1 Write the structures of the following compounds. (i) α-Methoxypropionaldehyde (ii) 3-Hydroxybutanal (iii) 2-Hydroxycyclopentane carbaldehyde (iv) 4-Oxopentanal (v) Di-sec. butyl ketone (vi) 4-Fluoroacetophenone Answer   (i) α-Methoxypropionaldehyde Structure: CH3–CH(OCH3)–CHO (ii) 3-Hydroxybutanal Structure: CH3–CH(OH)–CH2–CHO (iii) 2-Hydroxycyclopentane carbaldehyde Structure: Cyclopentane ring with –CHO at carbon 1 and –OH at carbon 2. (iv) 4-Oxopentanal Structure: CH3–CO–CH2–CH2–CHO (v) Di-sec. butyl ketone Structure: (CH3–CH2–CH(CH3))–CO–(CH3–CH2–CH(CH3)) (vi) 4-Fluoroacetophenone Structure: p-F–C6H4–CO–CH3 12.1 निम्नलिखित यौगिकों की संरचनाएँ लिखिए: (i) α-मेथॉक्सी प्रोपियोनाल्डिहाइड ii) 3-हाइड्रॉक्सी ब्यूटानाल (iii) 2-हाइड्रॉक्सी साइक्लोपेंटेन कार्बाल्डिहाइड iv) 4-ऑक्सो पेंटानाल (v) डाइ-सेक. ब्यूटिल कीटोन vi) 4-फ्लुओरो एसीटोफेनोन उत्तर: (i) α-मेथॉक्सी ...
Post a Comment
Read more

class xii chemistry chapter Amines

Class xii  Subject :- Chemistry  Chapter :- Amines  INTEXT QUESTIONS  Question 1: Classify the following amines as primary, secondary, or tertiary amines: (i) Naphthylamine (–NH2 attached to naphthalene ring) (ii) N,N-dimethylnaphthylamine (–N(CH3)2 attached to naphthalene ring) (iii) (C2H5)2CHNH2 (iv) (C2H5)2NH Answer: (i) Primary amine (ii) Tertiary amine (iii) Primary amine (iv) Secondary amine प्रश्न 1: निम्नलिखित ऐमीनों को प्राथमिक, द्वितीयक या तृतीयक ऐमीनों में वर्गीकृत कीजिए: (i) नाफ्थाइलऐमीन (नैफ्थलीन रिंग से जुड़ा –NH2) (ii) N,N-डाइमेथाइल नाफ्थाइलऐमीन (नैफ्थलीन रिंग से जुड़ा –N(CH3)2) (iii) (C2H5)2CHNH2 (iv) (C2H5)2NH उत्तर: (i) प्राथमिक ऐमीन (Primary amine) (ii) तृतीयक ऐमीन (Tertiary amine) (iii) प्राथमिक ऐमीन (Primary amine) (iv) द्वितीयक ऐमीन (Secondary amine) 13.2 Write structures of different isomeric amines corresponding to the molecular formula C₄H₁₁N. Write IUPAC names of all the isomers. What type of isomerism is exhibited by different pairs of amin...
Post a Comment
Read more