ALL THE BEST FOR JEE
SELF ASSESSMENT SPEED TEST-1
Time : 50 Min Max. Marks: 90
INSTRUCTIONS
Q.1 to Q.30 have one or more than one correct alternative(s) and carry 3 marks each.
There is NEGATIVE marking and 1 mark will be deducted for each wrong answer.
Q.1 Which of the following is not a polymide fibre
(A) Nylon-66 (B) Nylon-6 (C) Teflon (D) Terylene
Q.2 Which one of the following pairs is correctly matched:
(A) Sucrose : reducing sugar (B) Glucose : mutarotation (C) Fructose : aldose sugar (D) Sucrose : monosaccharide
Q.3 Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I List-II
(a-amino acids)
(a) Leucine (i) HO CH2–
(b) Phenylalanine (ii) (CH3)2–
(c) Tyrosine (iii) CH2OH–
(d) Serine (iv) C6H5–CH2–
Codes:(a) (b) (c) (d) (a) (b) (c) (d)
(A) ii i iv iii (B) ii iv i iii
(C) iv ii i iii (D) iv ii iii i
Q.4 Which of the following will not give blue colour during the test for 'N' in sodium extract
(A) C6H5N Cl⊕2 r (B) NH2CONH2 (C) NH2–NH2 (D)
Q.5 An electric current is passed through an aqueous solution (buffered at pH = 6.0) of alanine (pI = 6.0) and ariginine (pI = 10.2). he two amino acids can be separated because
(A) alanine migrates to anode, and arginine to cathode (B) alanine migrates to cathode, and arginione to anode
(C) alanine does not migrate, while arginine migrates to cathode (D) alanine does nor migrate, while arginine migrates to anode Q.6 Glucose and fructose form identical osazones because:
(A) they are monosaccharides (B) they are reducing sugars
(C) they are epimers (D) their configurations differ only at C-1 and C-2 Q.7 Which of the following is a natural polymer
(A) Nylon (B) Teflon (C) PVC (D) Cellulose
Q.8 Glucose reacts with CH3OH to form
(A) methyl glycoside (B) ethyl glycoside
(C) methyl ester of gluconic acid (D) None of these
Quest Tutorials
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Quest
Q.9 2,4-Dinitrofluorobenzene is used in peptide chemistry because:
(A) it has a characteristic colour
(B) it undergoes nucleophilic substitution (C) it undergoes electrophilic substitution
(D) it makes the amino acids insoluble in water and thus making them readily crystallisable Q.10 Mullikan and Barkers test for the detection of the nitro group is based on
(A) the reduction of nitrobenzene by hydrogen in the presence of a catalyst like Ni/Pt (B) the conversion of nitrobenzene to azoxy benzene
(C) the treatment of nitrobenzene with zinc dust in the neutral medium.
(D) the reduction of nitrobenzene with iron fillings and sodium hydroxide.
Q.11 In the given reaction:
Glucose + 3C6H5NH–NH2 H →⊕/∆ Osazone + A + B (A) and (B) are:
(A) C6H5NH2 and NH3 (B) C6H5NH2 and NH2OH (C) C6H5NH – NHOH and NH3 (D) NH2OH and NHOH Q.12 In solution D-glucose exist in how many isomeric forms?
(A) Two (B) Sixteen (C) Three (D) Four
Question No. 13 & 14 (2 questions)
These questions consist of two statements each, printed as assertion and reason, while answering these questions you are required to choose any one of the following responses.
(A) If assertion is true but the reason is false.
(B) If assertion is false but the reason is true.
(C) If both assertion and reason are true and the reason is a correct explanation of assertion.
(D) If both assertion and reason are true but reason is not a correct explanation of assertion.
Q.13 Assertion : Reducing sugar give brick red ppt with Fehling's solution and show mutarotation Reason : During mutarotation, one pure anomer is converted into mixture of two anomers.
Q.14 Assertion : A solution of sucrose in water is dextro rotatory but on hydrolysis in presence of H+, it becomes leavo rotatory .
Reason : Inversion of sugar follows first order kinetics.
Q.15 Teflon, Polystyrene and Neoprene are all
(A) Addition polymers (B) Chain growth polymer (C) Condensation polymer (D) Step growth polymer Q.16 Which of the following pairs can be distinguished by Fehling's solution?
(A) Glucose and fructose (B) Glucose and sucrose
(C) Methanal and ethanal (D) Hydroxy propanone and benzaldehyde Q.17 Which of the following is monosachharide
(A) Galactose (B) Sucrose (C) Glycogen (D) Cellulose
Q.18 In an amino acid, the carboxylic group ionises at pka1 = 2.34 and the ammonium ion at pka2 = 9.60. The isoelectric point of the amino acid is:
(A) 5.97 (B) 2.34 (C) 9.60 (D) 6.97
Q.19 Lysine is which type of amino acid:
(A) β-Amino acid (B) Acidic (C) Basic (D) Neutral
Q.20 On hydrolysis, which of the following carbohydrate give glucose only.
(A) Sucrose (B) Lactose (C) Maltose (D) Raffinose
Quest
Q.21 An organic compound contains C, H, N, S and Cl. For the detection of chlorine, the sodium extract of the compound is first heated with a few drops of concentrated HNO3 and then AgNO3 is added to get a white ppt of AgCl. The digestion with HNO3 before the addition of AgNO3 is
(A) to prevent the formation of NO2. (B) to create a common ion effect.
(C) to convert CN– and S2– to volatite HCN and H2S, or else they will interfere with the test forming AgCN or Ag2S
(D) to prevent the hydrolysis to NaCN and Na2S.
Q.22 Consider the following statements regarding the methyl glucosides obtained by the reaction of D-glucose with methanol in the presence of dry HCl gas
(i) These are methyl ester of hemiacetal of glucose formed by intramolecular reaction (ii) There are enantiomers
(iii) These are inomers
(iv) In one of these, all the substituents are equiatorial Which of the above statements are corrects
(A) i and iii (B) ii and iv (C) ii, iii and iv (D) i, iii and iv Q.23 a-Amino acids can be identified by:
(A) Baeyer reagent (B) Ninhydrin (C) Tollens reagent (D) NaSO3H
Q.24 Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I List-II
(a) α-D and b-D glucose (i) Enantiomers
(b) D-glucose and D-galactose (ii) Anomers
(c) Erythose and threose (iii) Epimers
(d) D-glyceraldehyde and (iv) Diastereomers L-glyceraldehyde
Codes:(a) (b) (c) (d) (a) (b) (c) (d)
(A) iii ii i iv (B) ii iii iv i
(C) iii ii iv i (D) ii iii i iv
Q.25 Which amino acid is achiral?
(A) Alamine (B) Valine (C) Proline (D) Glycine
Q.26 If specific rotation of glucose solution is 52° and fructose solution is –92° then what will be specific rotation of invert sugar?
(A) –20° (B) +20° (C) –72° (D) + 72°
Q.27 Which of the following compounds reduces Tollen's reagent?
(A) Glucose (B) Sucrose (C) Methanal (D) formic acid
Q.28 The given structure of α-amino acid will exist at which pH?
R
Q.29 In the given polypeptide:
Arg—Try—Ile—Asn—Gly C-terminus amino acid is:
(A) Gly (B) Arg (C) Try (D) Asn
Q.30 Which one of the following on reduction with NaBH4 gives equimolar mixture of sorbitol and mannitol?
(A) Glucose (B) Xylose (C) Fructose (D) Mannose
Quest Tutorials
North Delhi : E-16/289, Sector-8, Rohini, New Delhi. Ph. 65395439 [5]