To the visitors of blog

I have created this blog for students of class 10 of Gujarat secondary Education Board (GSEB). Questions are based on the text book of Gujarat Board. Hope it will help other students, too. For descriptive Question-Answer you can visit my another blog scienceandtechnology-manojsir.blogspot.com

Sunday, November 24, 2013

Chapter 11 : ORGANIC COMPOUNDS

Choose Appropriate Alternative


  1. The compound possessing (-CHO) functional group is called...
    [A] an amide [B]  an aldehyde [C]  a ketone [D] an alcohol
  2. Which functional group is possessed by carboxylic acid compounds?
    [A] >C=O [B] -COOH [C] -CHO [D] -OH
  3. With which group is suffix 'ol' attached in the nomenclature of organic compounds?
    [A] -CHO [B] >CO [C] -OH [D] -X
  4. Which functional group is there in methyl ethanoate?
    [A] Alcohol [B] Halide [C] Ketone [D] Ester
  5. Which of the following compounds is obtained from molasses by fermentation?
    [A] Chloromethane [B] Ethanol [C] Acetone [D] Methanal
  6. The solution of ethanol containing 5% water is called...
    [A] beer [B] varnish [C] rectified spirit [D] denatured alcohol
  7. What is the molecular formula of formalin?
    [A] HCOOH [B] HCOOCH3 [C] HCHO [D] HCOOC2H5
  8. Which substance is obtained by reduction of methanal?
    [A] Ethanol [B] CO2 and O2 [C] Methanol [D] Methanoic acid
  9. Which of the following is prepared by Fischer-Tropsch method?
    [A] Acetic acid [B] Acetaldehyde [C] Acetone [D] Ethanol
  10. Which of the following is a use of propanone?
    [A] As nail polish remover [B] As an antiseptic 
    [C] As an antibiotic     [D] As a preservative
  11. The reaction between an alcohol and a carboxylic acid in presence of concentrated sulphuric acid is called...
    [A] hydrolysis [B] β-elimination [C] saponification [D] esterification
  12. A compound with this functional group has minimum three carbon atoms.
    [A] -COOH [B] -CHO [C] >CO [D] -CONH2
  13. Which of the following is the monomer of polythene?
    [A] CH3-CH3 [B] CH2=CH2 [C] CH3-CH=CH2 [D] HC≡CH
  14. Which of the following is a use of acetic acid?
    [A] Preparation of vinegar [B] In white lead [C] As a reagent [D] All three
  15. Which of the following is used in conveyer belts?
    [A] Polythene [B] PVC [C] TEFLON [D] Neoprene
  16. What does 'P' stand for in IUPAC?
    [A] Pure [B] Physical [C] Primary [D] Proposed
  17. What is the IUPAC name of methyl acetate?
    [A] Methanal [B] Methyl ethanoate [C] Ethyl methanoate [D] Ethanoic acid
  18. What is the formula of methyl acetate (methyl ethanoate)?
    [A] CH3COOC2H5 [B] CH3COOCH3[C] C2H5COOCH3 [D] CH3COCH3
  19. The general formula of alcohol series is...
    [A] CnH2nOH [B] CnHnOH [C] CnH2n+1OH [D] CnH2n+2OH
  20. Which of the following is the true formula of an alcohol with 6 carbon atoms?
    [A] C6H11OH [B] C6H12OH [C] C6H13OH [D] C6H14OH
  21. Biological catalysts are called...
    [A] hormones [B] reagents [C] coagulants [D] enzymes
  22. ______ converts ______ of milk into ______.
    [A] Lactase, lactic acid, lactose [B] Lactose, lactic acid, lactase 
    [C] Lactic acid, lactose, lactase [D] Lactase, lactose, lactic acid
  23. Fermentation of grape juice to ethanol is aided by the enzymes present in...
    [A] grape juice [B] yeast [C] lactobacillus [D] atmosphere
  24. Sugar in molasses is converted to glucose (fructose) in presence of enzyme...
    [A] invertase [B] zymase [C] lactase [D] amylase
  25. Fermentation of glucose (fructose) to alcohol takes place in presence of...
    [A] invertase [B] zymase [C] lactase [D] amylase
  26. Absolute alcohol can be obtained by...
    [A] fermentation [B] evaporation [C] distillation [D] membrane technology
  27. Hydration of ethene gives...
    [A] ethane [B] ethanol [C] ethanoic acid [D] polythene
  28. The boiling point of pure ethanol is...
    [A] 311 K [B] 331 K [C] 351 K [D] 371 K
  29. When ethanol reacts with sodium metal, _____ gas is produced.
    [A] Dihydrogen [B] Carbon dioxide [C] Carbon monoxide [D] Dioxygen
  30. Oxidation of ethanol in presence of alkaline KMNO4 yields...
    [A] ethanal [B] ethanoic acid [C] propanol [D] ethyl ethanoate
  31. Which toxic substance is added to ethanol to prevent its consumption?
    [A] Methanol [B] Acetic acid [C] Methanal [D] Mercaptan
  32. Consumption of ethanol in excess causes a disease called ______ of liver.
    [A] fibrosis [B] lymphosys [C] cirrhosis [D] carcinoma
  33. In the liver of alcohol-addict the amount of _____ enzyme increases greatly.
    [A] P-540 [B] P-405 [C] P-504 [D] P-450
  34. In which of the following compounds is carbonyl group present?
    [A] Aldehydes [B] Ketones [C] Esters [D] Both aldehydes and ketones
  35. Oxidation of methanol in presence of catalyst______ gives methanal.
    [A] Ag2O [B] Pt [C] Pd [D] Ni
  36. The boiling point of methanal (formaldehyde) is...
    [A] 293 K [B] 351 K [C] 253 K [D] 311 K
  37. Which of the following can be used as a confirmatory test for aldehydes?
    [A] Silver-mirror test [B] Fehling's test [C] Benedict's test [D] All three
  38. Reduction of methanal to methanol is carried out in presence of the catalyst...
    [A] Pt [B] Pd [C] Ni [D] NaBH4
  39. Which of the following is a monomer of bakelite and melamine?
    [A] Isoprene [B] Methanal [C] Ethanal [D] Propanone
  40. Which catalyst is used in the preparation of acetone by Fischer-Tropsch process?
    [A] Ag2O [B] Pd [C] CoO [D] Alkaline KMNO4
  41. The boiling point of propanone is...
    [A] 239 K [B] 309 K [C] 351 K [D] 329 K
  42. NaBH4 (or LiAlH4) reduces propanone to...
    [A] propan-1-ol [B] propan-2-ol [C] propanal [D] propanoic acid
  43. Which of the following is the formula of propanone cyanohydrin?

  44. Which catalyst is used in the preparation of acetic acid from methanol?
    [A] CoO [B] Ag2O [C] V2O5 [D] I2-Rh
  45. The boiling point of ethanoic acid is...
    [A] 293 K [B] 329 K [C] 351 K [D] 391 K
  46. The monomer of natural rubber is...
    [A] chloroprene [B] isoprene [C] neoprene [D] 1-chloroethene
  47. Flooring tiles are prepared from...
    [A] polythene [B] TEFLON [C] polyvinyl chloride [D] polybutadiene
  48. 2-chloro-1,3-diene is the monomer of...
    [A] PVC [B] TEFLON [C] neoprene [D] natural rubber
  49. The elastic character of natural rubber is maintained between...
    [A] 283-333 K [B] 293-353 K [C] 273-353 K [D] 313-343 K
  50. To increase the rate of reaction during vulcanization of rubber, ______ is added.
    [A] lead [B] sulphur [C] ZnO [D] PbCO3
  51. During saponification reaction, what is obtained as by-product?
    [A] Glycerol [B] Ethanol [C] Sodium Ethoxide [D] Sodium carbonate
  52. Which of the following is not a functional group containing oxygen?
    [A] Alcohol [B] Aldehyde [C] Ketone [D] Halide
  53. The fermentation process to manufacture ethanol is...
    [A] an aerobic process       [B] an anaerobic process
    [C] a polymerization process [D] a catalytic aerobic process
  54. The IUPAC name of acetic acid is...
    [A] methanoic acid [B] ethanoic acid [C] propanoic acid [D] vinegar
  55. Ethylethanoate is...
    [A] an alcohol [B] an acid [C] an ester [D] a ketone
  56. In aldehydes, the carbonyl group is attached to...
    [A] one hydrogen and one oxygen      [B] two alkyl groups 
    [C] one hydrogen and one alkyl group [D] one oxygen and one alkyl group
  57. What is vinegar?
    [A] Methanol [B] Ethanol [C] Formic acid [D] Acetic acid
  58. An organic acid + an alcohol ----> ______ + water
    [A] An aldehyde [B] a ketone [C] an ester [D] a carboxylic acid
  59. The enzyme which converts milk into curd is...
    [A] lactase [B] invertase [C] zymase [D] cellulase
  60. Which of the following is not an oxidizing agent?
    [A] NaBH4 [B] KMNO4 [C] Cr2O3 [D] Fehling's solution
  61. Which of the following is a condensation polymer?
    [A] PVC [B] Nylon [C] Natural rubber [D] TEFLON
  62. Which gas is produced during fermentation?
    [A] CO [B] CO2 [C] Cl2 [D] O2
  63. Which of the following compounds has more reactivity?
    [A] Methane [B] Ethane [C] Ethene [D] Ethyne
  64. Which functional group do carboxylic acid compounds have?
    [A] >C=O [B] -COOH [C] -CHO [D] -OH
  65. What is the name of the aldehyde corresponding to butane?
    [A] Butyric acid [B] Butanone [C] Butanal [D] Butanol
  66. The names of the compounds with functional group _____ end with suffix 'ol'.
    [A] -CHO [B] >C=O [C] -NH2 [D] -OH
  67. What is the molecular formula of acetone?
    [A] CH3OH [B] CH3COCH3 [C] CH3CH2CHO [D] CH3CH2COOH
  68. What is the molecular formula of formalin?
    [A] HCOOH [B] HCOOCH3 [C] HCHO [D] HCOOC2H5
  69. Which acid is present in curd?
    [A] Lactic acid [B] Formic acid [C] Acetic acid [D] Citric acid
  70. A person loses his eye-sight if he consumes ethanol containing toxic substance______.
    [A] Formalin [B] Vinegar [C] Propanol [D] Methanol
  71. What is obtained by reduction of methanal?
    [A] Methanol [B] Ethanol [C] Ethanoic acid [D] Ethene
  72. Which of the following is used to prepare milk bags?
    [A] Polythene [B] PVC [C] Nylon [D] TEFLON
  73. Which functional group is attached with hydrocarbon part in soap?
    [A] -SO3K [B] SO3Na [C] -COONa [D] -COOH
  74. Which of the following is used to prepare water pipes?
    [A] Polythene [B] PVC [C] Nylon [D] TEFLON
  75. Which chemical is used to preserve the residues of dead animals?
    [A] Methanol [B] Ethanol [C] Formalin [D] Acetic acid
  76. Water gas is a mixture of ...
    [A] CO and N2 [B] CO and O2 [C] CO2 and H2 [D] CO and H2
  77. Which functional group is attached with hydrocarbon part in detergent?
    [A] -SO3K [B] SO3Na [C] -COONa [D] -COOH
  78. Which of the following ions is present in hard water?
    [A] Cu2+ [B] Pb2+ [C] Mg2+ [D] Al3+ 
  79. Which type of polymer is polystyrene?
    [A] Addition [B] Condensation [C] Bipolymer [D] Cyclic polymer
  80. Which of the following is used as a bio-polymer for taking stitches after surgery?
    [A] Dextran [B] Nylon [C] Polyester [D] Acrylic fibre
  81. Polyamide is also known as...
    [A] Polyester [B] Nylon [C] Acrylic fibre [D] TEFLON
  82. Who invented vulcanized rubber?
    [A] Fischer-Tropsch [B] Maxwell [C] Haber [D] Charles Goodyear
  83. _____ is obtained as a gas at room temperature.
    [A] Ethanol [B] Ethanoic acid [C] Methanal [D] Propanone
  84. How much sulphur is added in rubber to obtain vulcanised rubber for making tyres?
    [A] 5% [B] 10% [C] 15% [D] 20%

  85. [A][B][C][D]


ANSWERS


(1) B (2) B (3) C (4) D (5) B (6) C (7) C (8) C (9) C (10) A (11) D (12) C (13) B (14) D (15) D (16) A (17) B (18) B (19) C (20) C (21) D (22) D (23) B (24) A (25) B (26) D (27) B (28) C (29) A (30) B (31) A (32) C (33) D (34) D (35) A (36) C (37) D (38) B (39) B (40) C (41) D (42) B (43) A (44) D (45) D (46) B (47) C (48) C (49) A (50) C (51) A (52) D (53) B (54) B (55) C (56) C (57) D (58) C (59) A (60) A (61) B (62) B (63) D (64) B (65) C (66) D (67) B (68) C (69) A (70) D (71) A (72) A (73) C (74) B (75) C (76) D (77) B (78) C (79) A (80) A (81) B (82) D (83) C (84) A (85) (86) (87) (88) (89) (90)

No comments:

Post a Comment