Online CBSE NEET 2016 Solution of Chemistry = 3

These are Online CBSE NEET 2016 Solution of Chemistry = 3 for preparation.

1. The electron density is maximum on :-

• 2 and 4
• 2 and 5
• 2 and 3
• 3 and 4

2. Which of the following compounds shall not produced propene by reaction with HBr followed by elimination of direct only elimination reaction ?

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3. Which one of the following nitro-compounds does not react with nitrous acid ?

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4. The central dogma of molecular genetics states that the genetic information flows from :-

• DNA => RNA => Proteins
• DNA => RNA =>Carbohydrates
• Amino acids =>Proteins =>DNA
• DNA => Carbohydrates => Proteins

5. The correct corresponding order names of four with configuration given below respectively, is :-

• L-erythrose, L-threose, D-erythrose, D-threose
• D-erythrose, D-threose, L-erythrose, L-threose
• L-erythrose, L-threose, L-erythrose, D-threose
• D-threose, D-erythrose, L-threose, L-erythrose

6. In the given reaction

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7. A given nitrogen-containing aromatic compound A reacts with Sn/HCl, followed by HNO₂ to give an unstable compound B. B, on treatment with phenol, forms a beautiful coloured compound C₁₂H₁₀N_2O. with the molecular formula

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8. Consider the reaction CH₃CH₂CH₂Br + NaCN => CH₃CH₂CH₂CN + NaBr This reaction will be the fastest in

• N,N'-dimethylformamide (DMF)
• water
• ethanol
• methanol

9.The correct structure of the product A formed in the reaction

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10. Which among the given molecules can exhibit tautomerism ?

• Both I and II
• Both II and III
• III only
• Both I and III