10th GSEB Science And Technology MCQ 2

10th GSEB Science and Technology MCQ Test 2

Quiz

 

1. C₂ H₆ is the molecular formula of which compound?
   1.   Methane
   2.   Ethane
   3.   Propane
   4.   None
2. Which functional group is present in Carboxylic acid?
   1.   -OH
   2.   -COOH
   3.   -COH
   4.   -HCO
3. What is the angle between any two covalent bonds in methane molecule?
   1.   109⁰ 28'
   2.   190⁰ 28'
   3.   105⁰ 54'
   4.   119⁰ 28'
4. What is prepared by Fisher-Tropsch method?
   1.   Acetic acid
   2.   Acetaldehyde
   3.   Acetone
   4.   Ethanol
5. What is called the solution of ethanol containing 5% water?
   1.   Varnish
   2.   Rectified spirit
   3.   Perfume
   4.   Vinegar
6. The length of small intestine in a human adult is about .......... m.
   1.   6.5
   2.   5.6
   3.   1.6
   4.   6.1
7. The kidneys in human being are part of the system for?
   1.   Respiration
   2.   Transportation
   3.   Excretion
   4.   Nutrition
8. All the four chambers of heart are separated from each other by .............
   1.   Septa
   2.   Valves
   3.   Veins
   4.   Arteries
9. Transfer of which substance in the phloem tissue increases osmotic pressure?
   1.   Glucose
   2.   Sugure
   3.   Sucrose
   4.   Water
10. During which process blood is filtered out in Bowman's capsule?
    1.   Ultrafiltration
    2.   Filtration
    3.   Alturation
    4.   Secretion
11. The stimulus in the process of thigmotropism is ...................
    1.   touch
    2.   light
    3.   weight
    4.   Thick
12. The spinal cord originates from ...............
    1.   Medulla oblongata
    2.   Cerebrum
    3.   Cerebellum
    4.   Pons
13. The cut part of plant stem which is used in the process of grafting is .............
    1.   stock
    2.   Participating
    3.   Making
    4.   Cutting
14. A multicellular organism which reproduces by budding is ................
    1.   Hydra
    2.   Amoeba
    3.   Pharma
    4.   None
15. In human being sex is determined by ................
    1.   Cell
    2.   Tissues
    3.   Genes
    4.   All
16. The Continuity of features from one generation to another is for?
    1.   Revolution
    2.   Heredity
    3.   Body System
    4.   Generation
17. Which of the following is an example of non-biodegradable waste?
    1.   Fruits
    2.   Vegetables
    3.   Food
    4.   Polythene
18. Edaphic factors are included in .................
    1.   abiotic components
    2.   biotic components
    3.   antibiotic components
    4.   antiseptic components
19. In Gujarat how much area is covered by forest?
    1.   6.69 %
    2.   9.69 %
    3.   9.66 %
    4.   6.99 %
20. How many National Parks are there in Gujarat ?
    1.   4
    2.   6
    3.   3
    4.   8
21. Thermal conductivity of standard SWNT along Its length is ………… watt/m.k.
    1.   3500
    2.   350
    3.   35000
    4.   35
22. Diameter of hydrogen atom is …………. nm.
    1.   0.1
    2.   0.01
    3.   1.0
    4.   10
23. Which of the following always form virtual image?
    1.   concave mirror and convex lens
    2.   convex mirror and concave lens
    3.   convex mirror and convex lens
    4.   concave mirror and concave lens
24. Which of the following are primary pigments?
    1.   yellow, green and magenta
    2.   magenta, yellow and cyan
    3.   red, green and yellow
    4.   All
25. Which coloured light has minimum velocity in the glass prism?
    1.   violet
    2.   yellow
    3.   cyan
    4.   Red
26. Whose magnetic filed is like a magnetic filed of a bar magnet?
    1.   Current carrying solenoid
    2.   Current carrying wire
    3.   Current carrying ring
    4.   All
27. The magnitude of an AC voltage used in India is ………and the frequency is ………...
    1.   110V, 60Hz
    2.   110V, 50Hz
    3.   220V, 50Hz
    4.   220V, 60Hz
28. Matter in the core region of the sun is in .......... state.
    1.   solid
    2.   liquid
    3.   Mix
    4.   gaseous
29. What type of substance is NH₃ ?
    1.   Strong acid
    2.   Weak acid
    3.   Strong base
    4.   Weak base
30. If the pH of aqueous solution A, B, C and O are 1.9, 2.5, 2.1 and 3.0 then what will be the order of acidity?
    1.   A < C < B < O
    2.   O < C <B < A
    3.   O < B < C < A
    4.   O > C > B >A
31. Which formula is correct?
    1.   Mole = molecular mass/weight
    2.   Mole = weight/molecular mass
    3.   Mole = height/molecular mass
    4.   Mole = molecular mass/height
32. Which of the following substance is hygroscopic?
    1.   Anhydrous calcium chloride
    2.   Crinoline
    3.   Feldspar
    4.   All
33. Water gas is the mixture of which gases?
    1.   Carbon dioxide and hydrogen
    2.   Carbon and Hydrogen
    3.   Carbon monoxide and hydrogen
    4.   Carbon monoxide and Carbon dioxide
34. Which component obtained from refining of petroleum is used as Solvent in petrochemicals ?
    1.   Naphtha
    2.   Kerosene
    3.   Tar
    4.   Petrol
35. Which functional group is possessed by carboxylic acid?
    1.   - COH
    2.   - COOH
    3.   - CHO
    4.   - OH
36. Which of the following monomers is in polythene?
    1.   CH₂ = CH_2</sub
    2.   H₂O = H₂O
    3.   COOH = COOH
    4.   CH₃ = CH_3</sub
37. From where the process of digestion of food starts in human being?
    1.   Stomach
    2.   Mouth
    3.   Small intestine
    4.   Big intestine
38. In human digestive system, the enzymes pepsin and try sin are secreted respectively by which organs?
    1.   Stomach and pancreas
    2.   Stomach and Mouth
    3.   Stomach and livers
    4.   Stomach and salivary glands
39. Where is tricuspid value found in human heart ?
    1.   between two atria
    2.   between two ventricles
    3.   between right atrium and, right ventricle
    4.   between left atrium and left ventricle
40. During which process blood is filtered out in Bowman's capsule?
    1.   Reassertion
    2.   Secretion
    3.   Ultra filtration
    4.   All
41. What is the excretory unit in human being?
    1.   Nephron
    2.   Urinary bladder
    3.   Kidney
    4.   None
42. Cerebellum medulla oblongata and pons are the parts of ..........
    1.   hind-brain
    2.   mid- brain
    3.   Left-brain
    4.   Right-brain
43. The spinal cord originates from..................
    1.   cerebrum
    2.   cerebellum
    3.   medulla oblongata
    4.   pons
44. Which of the following endocrine gland does not occur as a pair in the human body?
    1.   adrenal
    2.   pituitary
    3.   testis
    4.   ovary
45. An alga which reproduces by the asexual reproduction method called fragmentation is ..............
    1.   Spirogyra
    2.   Ruinous
    3.   Salmonella
    4.   Plasmodium
46. In asexual reproduction two offspring's having the same genetic material and the same body features are called.........
    1.   clones
    2.   twins
    3.   callus
    4.   All
47. When Mendel crossed Tall plant with Dwarf plant what was the ratio of dwarf plants in F₂ generation ?
    1.   20%
    2.   25%
    3.   30%
    4.   35%
48. The structural and functional unit of the environment is known as ..............
    1.   food chain
    2.   ecosystem
    3.   environmental system
    4.   None
49. How many molecules of ozone can be decomposed by one atom of chlorine ?
    1.   1,000
    2.   10,000
    3.   1,00,000
    4.   10,00,000
50. The most important compound which accounts for almost 80% of the total depletion of ozone layer is ................
    1.   chloride ion
    2.   carbon ion
    3.   iron ion
    4.   magnesium ion