All Chapter 1 mark Impatant Question

10th Standard

    Reg.No. :
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Science

Time : 03:00:00 Hrs
Total Marks : 100
    100 x 1 = 100
  1. Inertia of a body depends on 

    (a)

    weight of the object

    (b)

    acceleration due to gravity of the planet

    (c)

    mass of the object

    (d)

    Both a & b

  2. The unit of ‘g’ is m s-2. It can be also expressed as ______.

    (a)

    cms-1

    (b)

    Nkg-1

    (c)

    Nm2kg-1

    (d)

    cm2s-2

  3. The physical quantity which is the measure of inertia is _______

    (a)

    density

    (b)

    weight

    (c)

    force

    (d)

    mass

  4. You're riding a bike when suddenly you hit a large rock. The bike stops moving but you fly over the handle - bars. This is an example of ______

    (a)

    Newton's I law

    (b)

    Newton's II law

    (c)

    Newton's III law

    (d)

    Law of conservation

  5. Magnification of a convex lens is

    (a)

    Positive

    (b)

    negative

    (c)

    either positive or negative

    (d)

    zero

  6. If VB, VG, VR be the velocity of blue, green and red light respectively in a glass prism, then which of the following statement gives the correct relation?

    (a)

    VB = VG = VR

    (b)

    VB > VG >VR

    (c)

    VB < VG < VR

    (d)

    VB < VG > VR

  7. An object is placed 25 cm from a convex lens whose focal length is 10 cm. The image distance is _______ cm.

    (a)

    50

    (b)

    16.66

    (c)

    6.66

    (d)

    10

  8. Simple microscope consists of

    (a)

    Short focal length convex

    (b)

    Large focal length of concave

    (c)

    Short focal length of concave

    (d)

    Large focal length of convex

  9. If a substance is heated or cooled, the change in mass of that substance is

    (a)

    positive

    (b)

    negative

    (c)

    zero

    (d)

    none of the above

  10. In the Given diagram, the possible direction of heat energy transformation is

    (a)

    A\(\leftarrow\)B, A\(\leftarrow\)C, B\(\leftarrow\)C

    (b)

    A\(\rightarrow\)B, A\(\rightarrow\)C, B\(\rightarrow\)C

    (c)

    A\(\rightarrow\)B, A\(\leftarrow\)C, B\(\rightarrow\)C

    (d)

    A\(\leftarrow\)B, A\(\rightarrow\)C, B\(\leftarrow\)C

  11. At what temperature are Celsius and Fahrenheit equal

    (a)

    40°

    (b)

    -40°

    (c)

    00

    (d)

    100°

  12. Charles's law is also called as ______

    (a)

    the law of temperature

    (b)

    the law of pressure

    (c)

    the law of volume

    (d)

    the law of gas

  13. Which of the following is correct?

    (a)

    Rate of change of charge is electrical power

    (b)

    Rate of change of charge is current.

    (c)

    Rate of change of energy is current.

    (d)

    Rate of change of current is charge.

  14. SI unit of resistance is

    (a)

    mho

    (b)

    joule

    (c)

    ohm

    (d)

    ohm meter

  15. Give the name of components which is designed to oppose the flow of current.

    (a)

    Capacitor

    (b)

    Resistors

    (c)

    Fuse wire

    (d)

    Inductor

  16. What happens when ammeter connected in parallel?

    (a)

    Open circuited

    (b)

    Closed Circuited

    (c)

    Short circuited

    (d)

    None of the above

  17. When a sound wave travels through air, the air particles

    (a)

    vibrate along the direction of the wave motion

    (b)

    vibrate but not in any fixed direction

    (c)

    vibrate perpendicular to the direction of the wave motion

    (d)

    do not vibrate

  18. Velocity of sound in a gaseous medium is 330 ms-1. If the pressure is increased by 4 times without causing a change in the temperature, the velocity of sound in the gas is

    (a)

    330 ms-1

    (b)

    660 ms-1

    (c)

    156 ms-1

    (d)

    990 ms-1

  19. Before playing guitar, guitarist adjust the tension and pluck the string. By doing so, he is adjusting.

    (a)

    intensity of sound only

    (b)

    amplitude

    (c)

    frequency

    (d)

    loudness of sound

  20. Sound travels with a speed of 330 ms-1. What is the wavelength of sound whose frequency is 550 Hz?

    (a)

    0.6 m

    (b)

    0.7 m

    (c)

    0.4 m

    (d)

    0.2 m

  21. Man-made radioactivity is also known as ___________.

    (a)

    Induced radioactivity

    (b)

    Spontaneous radioactivity

    (c)

    Artificial radioactivity

    (d)

    a & c

  22. In which of the following reaction, the mass number decreases by four of the daughter nucleus?

    (a)

    \(\alpha\) decay

    (b)

    \(\beta\) decay

    (c)

    \(\gamma \) decay

    (d)

    neutron decay

  23. In controlled chain reactions, the number of fission producing neutron is ___________

    (a)

    indefinite

    (b)

    finite and a variable

    (c)

    a constant

    (d)

    iodine

  24. _________ are used to control the chain reaction.

    (a)

    Control rods

    (b)

    Moderators

    (c)

    Coolants

    (d)

    Neutron source

  25. Which of the following is a triatomic molecule?

    (a)

    Glucose

    (b)

    Helium

    (c)

    Carbon dioxide

    (d)

    Hydrogen

  26. In the nucleus of 20Ca40, there are 

    (a)

    20 protons and 40 neutrons

    (b)

    20 protons and 20 neutrons

    (c)

    20 protons and 40 electrons

    (d)

    40 protons and 20 electrons

  27. Atomicity of Chlorine and Neon is

    (a)

    Mono atomic and mono atomic

    (b)

    Mono atomic and diatomic

    (c)

    Diatomic and diatomic

    (d)

    Diatomic and mono atomic

  28. The formula of a chloride of a metal M is MCl3 the formula of the phosphate of metal M will be:

    (a)

    MPO4

    (b)

    M2PO4

    (c)

    M3PO4

    (d)

    2 (PO4)3

  29. The process of coating the surface of metal with a thin layer of zinc is called______.

    (a)

    painting

    (b)

    thinning

    (c)

    galvanization

    (d)

    electroplating

  30. Which of the following inert gases have 2 electrons in the outermost shell.

    (a)

    He

    (b)

    Ne

    (c)

    Ar

    (d)

    Kr

  31. Pottassium belongs to ________ period

    (a)

    First

    (b)

    Second

    (c)

    Third

    (d)

    Fourth

  32. Electronegativity values of Na and CI are 0.9 and 3.0 respectively predict the nature of bonding.

    (a)

    Ionic

    (b)

    Covalent

    (c)

    Coordinate

    (d)

    Metallic

  33. A solution is a __________ mixture.

    (a)

    homogeneous

    (b)

    heterogeneous

    (c)

    homogeneous and heterogeneous

    (d)

    non homogeneous

  34. Which of the following is hygroscopic in nature?

    (a)

    ferric chloride

    (b)

    copper sulphate penta hydrate

    (c)

    silica gel

    (d)

    none of the above

  35. In exothermic process as the temperature increases, solubility of the salt is _____________

    (a)

    decreases

    (b)

    increases

    (c)

    no change

    (d)

    increase and then remains constant

  36. Which of the following is a dehydrating agent (absorbs moistone)

    (a)

    sodium hydroxide

    (b)

    anhydrous calcium chloride

    (c)

    sugar

    (d)

    None of these

  37. Photolysis is a decomposition reaction caused by __________

    (a)

    heat

    (b)

    electricity

    (c)

    light

    (d)

    mechanical energy

  38. Which of the following statements are correct about a chemical equilibrium?
    (i) It is dynamic in nature
    (ii) The rate of the forward and backward reactions are equal at equilibrium
    (iii) Irreversible reactions do not attain chemical equilibrium
    ​​​​​​(iv) ​The concentration of reactants and products may be different

    (a)

     i, ii and iii

    (b)

    i, ii and iv

    (c)

    ii, iii and iv

    (d)

    i, iii and iv

  39. Which of the following information is not conveyed by a balanced chemical equation?

    (a)

    Physical states of reactants and products

    (b)

    Symbols and chemicals formula of reactants and products

    (c)

    Number of atoms / molecules of the reactants and products formed

    (d)

    Feasibility of a chemical reaction

  40. Ionic product of water is expressed

    (a)

    Kw = [Hp+] [OH-]

    (b)

    Kw = [H+] [OH-]

    (c)

    both (a) and (b)

    (d)

    neither (a) nor (b)

  41. The secondary suffix used in IUPAC nomenclature of an aldehyde is ____

    (a)

    - ol

    (b)

    – oic acid

    (c)

    – al

    (d)

    - one

  42. Which of the following are used as anaesthetics?

    (a)

    Carboxylic acids

    (b)

    Ethers

    (c)

    Esters

    (d)

    Aldehydes

  43. Chemical formula of acetaldehyde is _________________.

    (a)

    CH3CHO

    (b)

    CH3CH2OH

    (c)

    CH3COOCH3

    (d)

    CH3-O-CH3

  44. Ethanolis used as ______________

    (a)

    a preservative for biological specimen

    (b)

    an antifreeze

    (c)

    an antiseptic

    (d)

    all the above

  45. The endarch condition is the characteristic feature of

    (a)

    root

    (b)

    stem

    (c)

    leaves

    (d)

    flower

  46. The xylem and phloem arranged side by side on same radius is called _________

    (a)

    radial

    (b)

    amphivasal

    (c)

    conjoint

    (d)

    None of these

  47. Pharyngeal ganglion in leech is a part of

    (a)

    Excretory system

    (b)

    Nervous system

    (c)

    Reproductive system

    (d)

    Respiratory system

  48. The body of leech has

    (a)

    23 segments

    (b)

    33 segments

    (c)

    38 segments

    (d)

    30 segments

  49. Leeches may grow to a length of________

    (a)

    35 cm

    (b)

    45 cm

    (c)

    25 cm

    (d)

    20 cm

  50. PNSis formed of _______pairs of cranial nerves in Rabbit

    (a)

    10

    (b)

    12

    (c)

    14

    (d)

    16

  51. ‘Heart to Heart’ is called

    (a)

    SA node

    (b)

    AV node

    (c)

    Purkinje fibres

    (d)

    Bundle of His

  52. Which one of the following shows correct composition of blood?

    (a)

    Plasma - Blood + Lymphocyte

    (b)

    Serum - Blood + Fibrinogen

    (c)

    Lymph - Plasma + RBC + WBC

    (d)

    Blood - Plasma + RBC + WBC + Platelets

  53. By active transport _________moves into the cells where it is utilised or stored.

    (a)

    glucose

    (b)

    sucrose

    (c)

    fructose

    (d)

    water

  54. The other name of red blood corpuscles is _________

    (a)

    erythrocytes

    (b)

    leucocytes

    (c)

    granulocytes

    (d)

    agranulocytes

  55. The neurons which carries impulse from the central nervous system to the muscle fibre.

    (a)

    afferent neurons

    (b)

    association neurons

    (c)

    efferent neurons

    (d)

    unipolar neurons

  56. Nerve cells do not possess

    (a)

    neurilemma

    (b)

    sarcolemma

    (c)

    axon

    (d)

    dendrites

  57. The cytoplasm has granular body called _______

    (a)

    nissl's granules

    (b)

    nerve fibres

    (c)

    glial cells

    (d)

    nerve cells

  58. Each neuron can transmit ______ nerve impulses per second.

    (a)

    10

    (b)

    1000

    (c)

    10,000

    (d)

    1,00,000

  59. Gibberellins cause:

    (a)

    Shortening of genetically tall plants

    (b)

    Elongation of dwarf plants

    (c)

    Promotion of rooting

    (d)

    Yellowing of young leaves

  60. The hormone which has positive effect on apical dominance is:

    (a)

    Cytokinin

    (b)

    Auxin

    (c)

    Gibberellin

    (d)

    Ethylene

  61. ______ is a growth inhibitor.

    (a)

    Auxin

    (b)

    GA

    (c)

    Cytokinin

    (d)

    Ethylene

  62. _____ is a natural Auxin.

    (a)

    Phenyl Acetic Acid

    (b)

    Indole 3 Butyric Acid

    (c)

    α - Naphthalene Acetic Acid

    (d)

    Indole - 3- Propionic Acid

  63. _____ promotes the ripening of fruits.

    (a)

    Auxin

    (b)

    Abscisic Acid

    (c)

    Ethylene

    (d)

    Cytokinin

  64. Dwarfism is caused by decreased secretion of ______ in children.

    (a)

    GH

    (b)

    FSH

    (c)

    GTH

    (d)

    ACTH

  65. Male gametes in angiosperms are formed by the division of ___________

    (a)

    Generative cell

    (b)

    Vegetative cell

    (c)

    Microspore mother cell

    (d)

    Microspore

  66. The large elongated cells that provide nutrition to developing sperms are

    (a)

    Primary germ cells

    (b)

    Sertoli cells

    (c)

    Leydig cells

    (d)

    Spermatogonia

  67. Fragmentation is seen in_________

    (a)

    Spirogyra

    (b)

    Bryophyllum

    (c)

    Yeast

    (d)

    Hydra

  68. There are_________ polar nuclei in the embryo sac

    (a)

    2

    (b)

    3

    (c)

    4

    (d)

    1

  69. _______from anterior pituitary stimulates milk secretion

    (a)

    Oxytocin

    (b)

    Prolactin

    (c)

    Progestrone

    (d)

    Oestrogen

  70. The process of spermatogenesis takes place inthe___________

    (a)

    Sertolicel cells

    (b)

    Seminiferous tubules

    (c)

    Leydigcells

    (d)

    Centrioles

  71. _______from the posterior pituitary stimulates the uterine contractions

    (a)

    Oxytocin

    (b)

    Insulin

    (c)

    Estrogen

    (d)

    Prolactin

  72. The _____________ units form the backbone of the DNA.

    (a)

    5 Carbon sugar

    (b)

    Phosphate

    (c)

    Nitrogenous bases

    (d)

    Sugar phosphate

  73. Okasaki fragments are joined together by ___________________.

    (a)

    Helicase

    (b)

    DNA polymerase

    (c)

    RNA primer

    (d)

    DNA ligase

  74. Choose the correct pair

    (a)

    A ≡ T

    (b)

    G ≡ A

    (c)

    A ≡ C

    (d)

    G ≡ C

  75. ________is a gene mutation

    (a)

    Deletion

    (b)

    Duplication

    (c)

    Translocation

    (d)

    Ploidy

  76. Biogenetic law states that ___________

    (a)

    Ontogeny and phylogeny go together

    (b)

    Ontogeny recapitulates phylogeny

    (c)

    Phylogeny recapitulates ontogeny

    (d)

    There is no relationship between phylogeny and ontogeny

  77. The best way of direct dating fossils of recent origin is by

    (a)

    Radio-carbon method

    (b)

    Uranium lead method

    (c)

    Potassium-argon method

    (d)

    Both (a) and (c)

  78. Biogenesis was speculated by _________.

    (a)

    Oparin

    (b)

    Louis Pasteur

    (c)

    Haldane

    (d)

    All the above

  79. Ancon sheep is an example of _________.

    (a)

    vestigial organ

    (b)

    discontinuous variation

    (c)

    acquired character

    (d)

    natural selection

  80. _________ or sediments fill the hollow depression and forms a cast.

    (a)

    Rocks

    (b)

    Sand

    (c)

    Soil

    (d)

    Minerals

  81. Radioactive Carbon (C14) dating method was discovered by_________.

    (a)

    W.F.Libby

    (b)

    Niels Bohr

    (c)

    Issac Newton

    (d)

    William Harvey

  82. Charles Darwin was a great __________.

    (a)

    Chemist

    (b)

    Naturalist

    (c)

    Doctor

    (d)

    Physicist

  83. Which method of crop improvement can be practised by a farmer if he is inexperienced?

    (a)

    clonal selection

    (b)

    mass selection

    (c)

    pureline selection

    (d)

    hybridisation

  84. rDNA is a

    (a)

    vector DNA

    (b)

    circular DNA

    (c)

    recombinant of vector DNA and desired DNA

    (d)

    satellite DNA

  85. In human beings, _________ of the DNA base sequences are the same and this is called as bulk genomic DNA.

    (a)

    99%

    (b)

    50%

    (c)

    90%

    (d)

    70%

  86. DNA finger printing was developed by

    (a)

    Dr. Ian Wilmut

    (b)

    Alec Jeffrey

    (c)

    Lilly

    (d)

    Dr. Norman

  87. Cancer cells are more easily damaged by radiations than normal cells because they are

    (a)

    Different in structure

    (b)

    Non dividing

    (c)

    Mutated Cells

    (d)

    Undergoing rapid division

  88. Cancer of the epithelial cells is called

    (a)

    Leukemia

    (b)

    Sarcoma

    (c)

    Carcinoma

    (d)

    Lipoma

  89. ______________ is not related to NIDDM.

    (a)

    Insulin administration

    (b)

    Controlled by medicine

    (c)

    Obese

    (d)

    Insulin action impaired

  90. Sexually abused children show symptoms of ______________

    (a)

    frequent urinary infection

    (b)

    headache

    (c)

    sore head

    (d)

    migraine

  91. An inexhaustible resources is

    (a)

    wind power

    (b)

    soil fertility

    (c)

    wild life

    (d)

    all of the above

  92. Common energy source in village is

    (a)

    electricity

    (b)

    coal

    (c)

    biogas

    (d)

    wood and animal dung

  93. The Chipko movement originated in_________

    (a)

    Uttar pradesh

    (b)

    Uttarakhand

    (c)

    Arunachal Pradesh

    (d)

    Madhya Pradesh

  94. Medical waste is disposed by________

    (a)

    Sanitary land fill

    (b)

    Incineration

    (c)

    Composting

    (d)

    Segregation

  95. Which is used to build scripts?

    (a)

    Script area

    (b)

    Block palette

    (c)

    stage

    (d)

    sprite

  96. Where you will create category of blocks?

    (a)

    Block palette

    (b)

    Block menu

    (c)

    Script area

    (d)

    sprite

  97. The output of any application is commonly known as______

    (a)

    File

    (b)

    Folder

    (c)

    Disk

    (d)

    Output

  98. Multiple files are stored in a ___________.

    (a)

    Script Editor

    (b)

    Paint

    (c)

    Notepad

    (d)

    Folder

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