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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

Wednesday, December 4, 2013

Chapter 9 : NON-METALS

Choose Appropriate Alternative



  1. Which nonmetallic element is in liquid form?
    [A] Carbon [B] Hydrogen [C] Bromine [D] Phosphorus
  2. With which of the following elements does carbon not give reaction?
    [A] Dichlorine gas [B] Dihydrogen gas [C] Dioxygen gas [D] Dilute HCl acid
  3. Which of the following oxides is of neutral nature?
    [A] CO2 [B] SO2 [C] P2O5 [D] N2O
  4. Which of the following gases is insoluble in water?
    [A] H2 [B] CO2 [C] NH3 [D] SO2
  5. Which of the following gases is used as preservative in fruit juices and jams?
    [A] NH3 [B] SO2 [C] H2 [D] CO2
  6. Which of the following acids is called the "King of Chemicals"?
    [A] HNO3 [B] H2SO4 [C] HCl [D] CH3COOH
  7. Which of the following gases is combustible?
    [A] CO2 [B] H2 [C] SO2 [D] NH3
  8. Which catalyst is used in production of ammonia by Haber's process?
    [A] Al2O3 [B] K2O [C] V2O5 [D] Fe
  9. Match correct pairs from Part A and Part B.

    [A] a-4, b-3, c-2, d-1 [B] a-2, b-4, c-1, d-3
[C] a-3, b-2, c-4, d-1 [D] a-4, b-2, c-3, d-1
  10. Match correct pairs from Part A and Part B.

    [A] a-4, b-3, c-1, d-2 [B] a-3, b-2, c-4, d-1
[C] a-3, b-1, c-2, d-4 [D] a-2, b-4, c-1, d-3
  11. Match correct pairs from Part A and Part B.

    [A] a-2, b-3, c-1, d-4 [B] a-4, b-2, c-1, d-3
[C] a-3, b-4, c-2, d-1 [D] a-2, b-3, c-1, d-4
  12. There are _____ non-metallic elements.
    [A] 16 [B] 18 [C] 19 [D] 20
  13. The process of preparation of vegetable ghee is called...
    [A] hydrogenation [B] hydrolysis [C] oxidation [D] chlorination
  14. _____ is a good conductor of electricity.
    [A] Diamond [B] Phosphorus [C] Pure water [D] Graphite
  15. Oxides of nonmetals are...
    [A] acidic [B] basic [C] neutral [D] either acidic or neutral
  16. Chlorides of nonmetals are generally...
    [A] solid [B] liquid [C] either liquid or gas [D] either solid or gas
  17. Hydrogen was discovered by _____ in 1766.
    [A] Archemedes [B] Cavendish [C] Fischer and Tropsch [D] Dalton
  18. Water gas is...
    [A] CO + H2O [B] CO2 + H2 [C] CO + H2 [D] CO2 + H2O
  19. Dihydrogen gas easily reduces the oxides of metals...
    [A] less active than Zn [B] more active than Zn 
[C] except Zn           [D] of any reactivity
  20. The calorific value of _____ is the highest among fuels.
    [A] methane [B] hydrogen [C] butane [D] diesel
  21. Ammonia is manufactured by ____ process.
    [A] Haber's [B] Bayer's [C] Contact [D] Ostwald's
  22. _____ and _____ are used as promoters in Haber's process for ammonia.
    [A] Al2O3, KNO3 [B] Al2O3, NaCl [C] Al2O3, K2O [D] K2O, KNO3
  23. Aqueous solution ofd ammonia acts as...
    [A] a weak acid [B] a weak base [C] a strong acid [D] a strong base
  24. Nitric acid is manufactured from ammonia by...
    [A] Haber's process [B] Frasch process [C] Contact process [D] Ostwald's process
  25. The atomic number of sulphur is...
    [A] 14 [B] 15 [C] 16 [D] 17
  26. The electronic configuration of sulphur is...
    [A] 2,8,4 [B] 2,8,5 [C] 2,8,6 [D] 2,8,7
  27. Like carbon,_____ also possesses the property of catenation.
    [A] nitrogen [B] oxygen [C] sulphur [D] phosphorus
  28. Rhombic sulphur is stable at temperatures... 
    [A] above 369 K [B] below 369 K [C] above 396 K [D] below 396 K
  29. A molecule of sulphur has _____ atoms in it.
    [A] 4 [B] 5 [C] 6 [D] 8
  30. The melting point of sulphur is...
    [A] 369 K [B] 388 K [C] 396 K [D] 423 K
  31. _____ is responsible pollutant gas for acid rain.
    [A] N2O [B] CO [C] NO [D] SO2
  32. Which catalyst is used in oxidation of SO2 to SO3?
    [A] Ag2O [B] Pt [C] Pd [D] V2O5
  33. Sulphuric acid is manufactured by _____ process.
    [A] Ostwald [B] Contact [C] Frasch [D] Haber's
  34. The formula of oleum is...
    [A] H2S2O7 [B] H2SO4 [C] H2S2O3 [D] H3S3O7
  35. SO2 is oxidized to SO3 during lead-chamber process by...
    [A] NO [B] N2O [C] NO2 [D] N2O3
  36. In concentrated sulphuric acid the proportion of water is...
    [A] 98% [B] 90% [C] 10% [D] 2%
  37. What is the total number of elements known till today?
    [A] 110 [B] 114 [C] 99 [D] 119
  38. Which of the following is used as electrode in dry cell?
    [A] Lead [B] Graphite [C] Coal [D] Copper
  39. Which of the following is present in protein, hair, wool, onion and garlic?
    [A] Silicon [B] Sulphur [C] Phosphorus [D] Ammonia
  40. Which of the following is used in substances called fungicides?
    [A] Sulphur [B] Phosphorus [C] Silicon [D] Nitrogen
  41. Which of the following nonmetallic elements possesses lustre?
    [A] Sulphur [B] Phosphorus [C] Iodine [D] Chlorine
  42. What is the molecular formula of Galena?
    [A] ZnS [B] CuFeS2 [C] Ca(OH)2 [D] PbS
  43. Which property of sulphur is the basis of Frasch process to obtain sulphur?
    [A] Low melting point [B] High melting point [C] Low boiling point [D] High boiling point
  44. What is the shape of monoclinic sulphur?
    [A] Hexagonal [B] Cubic [C] Needle-like [D] Tetrahedral
  45. What is the shape of rhombic sulphur?
    [A] Octahedral [B] Tetrahedral [C] Hexagonal [D] Needle-like
  46. Which of the following is used in vulcanization of rubber?
    [A] Sulphur [B] Phosphorus [C] Ammonia [D] Hydrogen
  47. Which of the following gases is combustible?
    [A] CO2 [B] H2 [C] O2 [D] NH3
  48. Which of the following is the molecular formula of sulphurous acid?
    [A] H2S [B] H2SO3 [C] H2SO4 [D] H2S2O7
  49. Apart from Contact process, which of the following is a method to manufacture sulphuric acid?
    [A] Haber's process [B] Ostwald's process [C] Lead-Chamber process [D] Fischr's process
  50. What is the proportion of sulphuric acid in dilute sulphuric acid?
    [A] 2% [B] 10% [C] 90% [D] 98%
  51. Element 'X' reacts with oxygen to give product 'Y', which on dissolving in water produces acid which turns blue litmus red. Choose the appropriate statement.
    [A] X is a nonmetal and Y is a basic oxide.  [B] X is a metal and Y is a basic oxide.
[C] X is a nonmetal and Y is an acidic oxide. [D] X is a metal and Y is an acidic oxide.
  52. When SO2 gas is passed through decanted solution of lime, it becomes milky due to...
    [A] CaSO3 [B] CaCO3 [C] CuSO4 [D] CaSO4
  53. In a molecule of sulphur, each atom is bonded to ____ other atoms.
    [A] 1 [B] 2 [C] 7 [D] 8

  54. [A]  [B][C]  [D]

  55. [A] [B] [C]  [D]

ANSWERS


(1) C (2) D (3) D (4) A (5) B (6) B (7) B (8) D (9) B (10) D (11) C (12) B (13) A (14) D (15) D (16) C (17) B (18) C (19) A (20) B (21) A (22) C (23) B (24) D (25) C (26) C (27) C (28) B (29) D (30) B (31) D (32) D (33) B (34) A (35) C (36) D (37) B (38) B (39) B (40) A (41) C (42) D (43) A (44) C (45) A (46) A (47) B (48) B (49) C (50) B (51) C (52) A (53) B (54) (55) (56) (57) (58) (59) (60)
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