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Chemistry (Engineering Entrance)

Organic chemistry and biochemistry questions for engineering entrance preparation

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

β-Nitropropionic acid is used as

  1. dye
  2. mitochondrial inhibitor
  3. natural insecticide
  4. explosive
  5. None of these
Question 2 Multiple Choice (Single Answer)

Aniline is prepared by

  1. Zinin's reaction
  2. Pfitizinger's reaction
  3. Gould-Jacobs' reaction
  4. Doebner-Miller's reaction
  5. None of these
Question 3 Multiple Choice (Single Answer)

Which of the following compounds is used as a standard to measure the strength of bombs?

  1. Trinitroresorcinol
  2. Trinitrotoluene
  3. RDX
  4. Trinitrophenol
  5. None of these
Question 4 Multiple Choice (Single Answer)

Ortho-sulphobenzamide is also called

  1. saccharine
  2. aspirin
  3. salicilin
  4. paracetamol
  5. None of these
Question 5 Multiple Choice (Single Answer)

Which of the following is not produced when aliphatic amines are treated with HNO2/NaNO2 + HCl?

  1. Alcohol
  2. N-Nitrosomine
  3. Trialkyl ammonium nitrite
  4. N-alkylbenzene sulphonamide
  5. None of these
Question 6 Multiple Choice (Single Answer)

Which of the following contains nano peptides?

  1. Oxyctocin
  2. Vassopressine
  3. Estrogen
  4. Bradykinin
  5. None of these
Question 7 Multiple Choice (Single Answer)

Bradykenin acts as a/an

  1. retainer of water
  2. female sex hormone
  3. inflammatory mediator
  4. oxytocin
  5. Both (1) and (2)
Question 8 Multiple Choice (Single Answer)

Which of the following is used to obtain 'Her Majesty' explosive?

  1. TNT
  2. RDX
  3. TNP
  4. TNR
  5. None of these
Question 9 Multiple Choice (Single Answer)

Enzymes behave as

  1. proteins
  2. fats
  3. carbohydrates
  4. nucleic acid
  5. None of these
Question 10 Multiple Choice (Single Answer)

Caprylic acid is found in

  1. breast milk
  2. butter
  3. chocolate
  4. nutmeg
  5. None of these
Question 11 Multiple Choice (Single Answer)

Which amino acid acts as alpha-helix terminator?

  1. Proline
  2. Tryptophan
  3. Lysine
  4. Tyrosine
  5. None of these
Question 12 Multiple Choice (Single Answer)

Polyurethane is formed when

  1. hexamethylene disocyanate and tetramethylene glycol undergo step reaction polymerisation
  2. melamine and formaldehyde resin give a polymer
  3. phenol and formaldehyde react in presence of dilute acid
  4. adipic acid and hexamethylene polymerise
  5. None of these
Question 13 Multiple Choice (Single Answer)

Which of the following is a muscle-stimulating protein?

  1. Glycine
  2. Lysine
  3. Leucine
  4. Proline
  5. None of these
Question 14 Multiple Choice (Single Answer)

The codons AAA and AAG match with

  1. isoleucine
  2. valine
  3. lysine
  4. methionine
  5. None of these
Question 15 Multiple Choice (Single Answer)

Which of the following is/are obtained when aromatic amines are treated with HNO3/H2SO4?

  1. Para-nitroaniline
  2. Para and meta nitroanilines
  3. Meta-nitroaniline
  4. Ortho, para and meta nitroanilines
  5. None of these
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