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Q. No.Two possible stereo-structures of CH3CHOH.COOH, which are optically active, are called
1. Diastereomers
2. Atropisomers
3. Enantiomers
4. Mesomers
1. Diastereomers
2. Atropisomers
3. Enantiomers
4. Mesomers
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn Duma's method for estimation of nitrogen, 0.25g of an organic compound gave 40 mL of nitrogen collected at 300 K temperature and 725 mm pressure. If the aqueous tension at 300 K is 25 mm, the percentage of nitrogen in the compound is:
1. 17.36
2. 18.20
3. 16.76
4. 15.76
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn which of the following compounds, the C—Cl bond ionization shall give the most stable carbonium ion?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyConsider the following compounds
Hyperconjugation occurs in
1. I only
2. II only
3. III only
4. I and III
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe enolic form of ethyl acetoacetate is given below
The number of σ and π bonds in the enolic form are respectively-
1. 18 sigma bonds and 2 pi-bonds
2. 16 sigma bonds and 1 pi-bond
3. 9 sigma bonds and 2 pi-bonds
4. 9 sigma bonds and 1 pi-bond
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn Kjeldahl’s method for estimation of nitrogen present in the soil sample, ammonia evolved from 0.75g of sample neutralized 10ml. of 1M H2SO4 . The percentage of nitrogen in the soil is-
1. 37.33
2. 45.85
3. 25.75
4. 43.13
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe structure of the compound whose IUPAC name is 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is-
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
is aromatic because it has:Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe isobutyl group among the following is-
1. 
2. CH3–CH2–CH2–CH2–
3. 
4. 
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