8th Class Science Sample Paper

done Science Olympiad Model Test Paper-19 Total Questions - 50    [Download]

• question_answer1)
  If focal length of a convex lens is 50 cm, what will be the power of the lens.
  A)
  5 diopter
  done clear
  B)
   4 diopter
  done clear
  C)
  6 diopter
  done clear
  D)
  2 diopter
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer2)
  Which one of the following can displace magnesium from magnesium sulphate solution?
  A)
  Aluminium
  done clear
  B)
  Zinc
  done clear
  C)
  Iron
  done clear
  D)
  Copper
  done clear
  E)
  None of these
  done clear
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• question_answer3)
  Kerosene is a useful product which is obtained by:
  A)
  Refining of petroleum
  done clear
  B)
  Refining of diesel
  done clear
  C)
  Refining of coal
  done clear
  D)
  Refining of natural gas
  done clear
  E)
  None of these
  done clear
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• question_answer4)
  If frequencies of four vibrating objects P, Q, R and S are 5 Hz, 10 Hz, 12 Hz and 15 Hz respectively then which among the following will produces high pitch sound?
  A)
  P
  done clear
  B)
  Q
  done clear
  C)
  R
  done clear
  D)
  S
  done clear
  E)
  None of these
  done clear
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• question_answer5)
  Next step after harvesting the crop is:
  A)
  Winnowing
  done clear
  B)
  Threshing
  done clear
  C)
  Irrigation
  done clear
  D)
  Weeding
  done clear
  E)
  None of these
  done clear
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• question_answer6)
  Which was the first planet to be discovered by the telescope?
  A)
  Venus
  done clear
  B)
  Uranus
  done clear
  C)
  Neptune
  done clear
  D)
  Saturn
  done clear
  E)
  None of these
  done clear
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• question_answer7)
  Ozone hole is formed because of:
  A)
  Destruction of oxygen gas in the exosphere
  done clear
  B)
  Thickening of ozone layer in the stratosphere
  done clear
  C)
  Destruction of ozone gas in the ozone layer
  done clear
  D)
  Destruction of nitrogen and oxygen gas in the atomsphere
  done clear
  E)
  None of these
  done clear
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• question_answer8)
  A toy car released with the some initial speed will travel farthest on:
  A)
  Muddy surface
  done clear
  B)
  Cemented surface
  done clear
  C)
  Polished marble surface
  done clear
  D)
  Brick surface
  done clear
  E)
  None of these
  done clear
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• question_answer9)
  Which of the following parts of a cell controls the movement of substances into the cell and out of cell?
  A)
  Nucleus
  done clear
  B)
  Plastid
  done clear
  C)
  Endoplasmic reticulum
  done clear
  D)
  Cell membrane
  done clear
  E)
  None of these
  done clear
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• question_answer10)
  In which one of the following states the Dalma Wildlife sanctuary is situated?
  A)
  UP
  done clear
  B)
  Bihar
  done clear
  C)
  Jharkhand
  done clear
  D)
  Kerela
  done clear
  E)
  None of these
  done clear
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• question_answer11)
  Which one of the following devices is used to detect electric charge on an object?
  A)
  Seismograph
  done clear
  B)
  Seismometre
  done clear
  C)
  Ritcher scale
  done clear
  D)
  Electroscope
  done clear
  E)
  None of these
  done clear
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• question_answer12)
  Which one of the following organisms can reproduces by asexual method of reproduction?
  A)
  Cats
  done clear
  B)
  Birds
  done clear
  C)
  Human
  done clear
  D)
  Hydra
  done clear
  E)
  None of these
  done clear
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• question_answer13)
  Which of the following statements is incorrect?
  A)
  Thyroid gland is present in our neck
  done clear
  B)
  Thyroid gland is an endocrine gland
  done clear
  C)
  Thyroxin hormone controls the rate of body metabolism
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer14)
  Which set of processes is involved in the process of soil preparation before sowing seeds of crop?
  A)
  Ploughing, levelling, sowing
  done clear
  B)
  Ploughing, levelling, manuring
  done clear
  C)
  Levelling, manuring, irrigation
  done clear
  D)
  Ploughing, leveling, irrigation, sowing
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer15)
  If a diver dives into a sea, at which point the diver will feel the maximum pressure?
  A)
  At the surface
  done clear
  B)
  At the bottom
  done clear
  C)
  In the middle
  done clear
  D)
  Same at all points
  done clear
  E)
  None of these
  done clear
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• question_answer16)
  Aspergillosis is caused by which one of the following organisms?
  A)
  Virus
  done clear
  B)
  Bacteria
  done clear
  C)
  Protozoa
  done clear
  D)
  Fungus
  done clear
  E)
  None of these
  done clear
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• question_answer17)
  Which one of the following is a multicellular algae?
  A)
  Diatoms
  done clear
  B)
  Chlamydomonas
  done clear
  C)
  Spirogyra
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer18)
  Which of the following cell organneles is not found in plant cell?
  A)
  Mitochondria     
  done clear
  B)
  Ribosome
  done clear
  C)
  Chloroplast
  done clear
  D)
  Nucleus
  done clear
  E)
  None of these
  done clear
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• question_answer19)
  Wildlife and forests should be conserved:
  A)
  To preserve biodiversity.
  done clear
  B)
  To prevent extinction of endangered species.
  done clear
  C)
  To maintain ecological balance in nature.
  done clear
  D)
  All the above
  done clear
  E)
  None of these
  done clear
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• question_answer20)
  Plastic buckets are preferred over iron buckets as they are:
  A)
  Light weight
  done clear
  B)
  Non reactive
  done clear
  C)
  Resistant to corrosion
  done clear
  D)
  All the above
  done clear
  E)
  None of these
  done clear
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• question_answer21)
  ______ adjusts the size of ______ according to the intensity of light received by the eye from the surroundings.
  A)
  Retina, pupil
  done clear
  B)
  Iris, retina
  done clear
  C)
  Iris, pupil
  done clear
  D)
  Pupil, Iris
  done clear
  E)
  None of these
  done clear
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• question_answer22)
  Which of the following metals reacts with cold water vigorously?
  A)
  Magnesium
  done clear
  B)
  Silver
  done clear
  C)
  Sodium
  done clear
  D)
  Aluminium
  done clear
  E)
  None of these
  done clear
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• question_answer23)
  Which of the following carbon compounds is not present in the coal tar produced using the coal lignite?
  A)
  Nepthalene
  done clear
  B)
  Anthracene
  done clear
  C)
  Phenol
  done clear
  D)
  Benzene
  done clear
  E)
  None of these
  done clear
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• question_answer24)
  The frequency of the sound traveling with a velocity of 680 m/sec and a wavelength of 2 m is:
  A)
  340 Hz
  done clear
  B)
  240 Hz
  done clear
  C)
  520 Hz
  done clear
  D)
  680 Hz
  done clear
  E)
  None of these
  done clear
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• question_answer25)
  Which among the following is essential for the combustion to take place?
  A)
  Carbon dioxide
  done clear
  B)
  Petrol
  done clear
  C)
  Oxygen
  done clear
  D)
  Candle
  done clear
  E)
  None of these
  done clear
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• question_answer26)
  Which one of the following is a weak electrolyte?
  A)
  HCl solution
  done clear
  B)
  Citric acid solution
  done clear
  C)
  NaOH solution
  done clear
  D)
  \[CuS{{O}_{4}}\]solution
  done clear
  E)
  None of these
  done clear
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• question_answer27)
  Look at the following figure and choose the correct option.
  A)
  X represents anode, Y represents cathode
  done clear
  B)
  X represents cathode, Y represents anode
  done clear
  C)
  Both represent anode
  done clear
  D)
  Both represent cathode
  done clear
  E)
  None of these
  done clear
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• question_answer28)
  Which one of the following is present in animal, plant and bacterial cell?
  A)
  Chloroplast
  done clear
  B)
  Cell wall
  done clear
  C)
  Nuclear membrane
  done clear
  D)
  Cell membrane
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer29)

  Which one of the following statements is correct?

  Statement 1: Earthquake is caused by sudden movements of tectonic plates.

  Statement 2: The intensity of an earthquake is measured by Richter scale.

  Statement 3: At the boundaries of the tectonic plates the Earthquake is least likely to occur.

  A)
  statement 1 and 2
  done clear
  B)
  Statement 2 and 3
  done clear
  C)
  Only statement 2
  done clear
  D)
  All three statements
  done clear
  E)
  None of these
  done clear
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• question_answer30)
  Which among the following planets takes about 84 years for one revolution around the sun?
  A)
  Mars    
  done clear
  B)
  Neptune
  done clear
  C)
  Saturn
  done clear
  D)
  Jupiter
  done clear
  E)
  None of these
  done clear
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• question_answer31)
  Select the pair of words which are related in the same way as 'current' is related to 'Ampere'.
  A)
  Power: Energy
  done clear
  B)
  Pressure: Time
  done clear
  C)
  Force: Newton
  done clear
  D)
  Mass: Meter
  done clear
  E)
  None of these
  done clear
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• question_answer32)
  Pointing towards a person in a photograph, Raman said, "She is the only daughter of the mother of my brother's sister." How is the person related to Raman?
  A)
  Uncle
  done clear
  B)
  Nephew's
  done clear
  C)
  Mother
  done clear
  D)
  Sister
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer33)
  Complete the following series. B, E, I, L, ?, S
  A)
  Q
  done clear
  B)
  M
  done clear
  C)
  P
  done clear
  D)
  N
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer34)
  Find the odd one out of the following options.
  A)
  O P Q T U
  done clear
  B)
  T U V Y Z
  done clear
  C)
  C D E H I
  done clear
  D)
  H I J N O
  done clear
  E)
  EFGJK
  done clear
  View Answer play_arrow

• question_answer35)
  After walking 6 km in a direction, I turned to the right and then walked 2 km. After then I turned to the left and walked 10 km. In the end, I was moving towards the North. I started my journey moving in which direction?
  A)
  North
  done clear
  B)
  South
  done clear
  C)
  East
  done clear
  D)
  West
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer36)
  In a certain code 'QUESTION' is written as 'NXBVQLLQ'. How will 'REPLY' be coded?
  A)
  YHMOV
  done clear
  B)
  OBMVI
  done clear
  C)
  VHSOB
  done clear
  D)
  OHMQV
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer37)
  In a queue, Kanika is 10th from the front while Mukul is 25th from behind and Tannu is just in the middle of the two. If there be 50 persons in the queue. What position does Tannu occupy from the front?
  A)
  20th
  done clear
  B)
  19th
  done clear
  C)
  18th
  done clear
  D)
  17th
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer38)
  If M \[+\] N means 'M' is the brother of 'N', M \[-\] N means 'M' is the sister of 'N', M \[\times \] N means 'M' is the mother of 'N' and M \[\div \] N means 'M' is father of 'N', then which of the following would mean 'E' is the Paternal Aunt of 'F'?
  A)
  \[E-G\div F\]
  done clear
  B)
  \[E+G\times F\]
  done clear
  C)
  \[E\times F-G\]
  done clear
  D)
  \[F\times G+E\]
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer39)
  Find the missing number
  A)
  37
  done clear
  B)
  73
  done clear
  C)
  48
  done clear
  D)
  74
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer40)
  Find the missing number
  A)
  11
  done clear
  B)
  22
  done clear
  C)
  33
  done clear
  D)
  44
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer41)

  Which of the following chemical reactions is incorrect?

  (i) \[FeS{{O}_{4}}+Zn\to ZnS{{O}_{4}}+Fe\]

  (ii) \[ZnS{{O}_{4}}+Fe\to FeS{{O}_{4}}+Zn\]

  (iii) \[2Au+2HCl\to 2AuCl+{{H}_{2}}\]

  (iv) \[Mg+CuS{{O}_{4}}\to MgS{{O}_{4}}+Cu\]

  A)
  (i) and (ii)
  done clear
  B)
  (ii) and (iii)
  done clear
  C)
  (iii) and (iv)
  done clear
  D)
  (i) and (iv)
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer42)
  Match the following:

  Column A		Column B
  (I)	Mudumalai wildlife sanctuary	(A)	Rajasthan
  (II)	Sanjay Gandhi wildlife sanctuary	(B)	Madhya Pradesh
  (III)	Bharatpur bird sanctuary	(C)	Maharashtra
  (IV)	Bori wildlife sanctuary	(D)	Tamil nadu

  A)
  I\[\to \]D, II\[\to \]A, III\[\to \]B, IV\[\to \]C
  done clear
  B)
  I\[\to \]D, II\[\to \]C, III\[\to \]A, IV\[\to \]B
  done clear
  C)
  I\[\to \]C, II\[\to \]D, III\[\to \]A, IV\[\to \]B
  done clear
  D)
  I\[\to \]A, II\[\to \]C, III\[\to \]D, IV\[\to \]B
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer43)

  Fill in the blanks with correct combination of words.\[\underline{\,\,\,\,L\,\,\,\,}\] is a large group of simple, plant like organisms. They contain \[\underline{\,\,\,\,M\,\,\,\,}\] and produce food by\[\underline{\,\,\,\,N\,\,\,\,}\]. The two examples of this group are \[\underline{\,\,\,\,O\,\,\,\,}\]and\[\underline{\,\,\,\,P\,\,\,\,}\].

  A)
  L-algae, M-cilia,   N-holozoic   nutrition, O chlamydomonas, P-spirogyra
  done clear
  B)
  L-fungi,    M chlorophyll, N-saprophytic nutrition, O paramecium, P-spirogyra
  done clear
  C)
  L-protozoa, M-chlorophyll, N-photosynthesis, O-chlamydomonas, P-spirogyra
  done clear
  D)
  L-algae, M-chlorophyll, N-photosynthesis, O chlamydomonas, P-spirogyra
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer44)
  Match the following:

  Column A		Column B
  (I)	Laminaria	(A)	Protozoa
  (II)	Paramecium	(B)	Bacteria
  (III)	Penicillium	(C)	Algae
  (IV)	Streptococcus	(D)	Fungi

  A)
  I\[\to \]D, II\[\to \]A, III\[\to \]B, IV\[\to \]C
  done clear
  B)
  I\[\to \]C, II\[\to \]D, III\[\to \]A, IV\[\to \]B
  done clear
  C)
  I\[\to \]D, II\[\to \]C, III\[\to \]B, IV\[\to \]A
  done clear
  D)
  I\[\to \]C, II\[\to \]A, III\[\to \]D, IV\[\to \]B
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer45)
  Choose the correct option from the following to label the given animal cell.
  A)
  a-cell membrane, b-golgi body, c- mitochondria, d-nucleus.
  done clear
  B)
  a-cell membrane, b-nucleus, c- mitochondria, d-golgi body.
  done clear
  C)
  a-cell wall, b-nucleus, c-mitochondria, d-golgi body.
  done clear
  D)
  a-cell membrane, b-mitochondria, c-golgi body, d-nucleus.
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer46)

  Which one of the following statements is correct?

  (i) Sound waves collected by pinna of our ear first pass through ear canal before falling on the eardrum.

  (ii) When the sound waves falls on the eardrum, the eardrum stops vibrating.

  (iii) It is the auditory nerve which carry electrical impulses to the brain from cochlea.

  (iv) The cochlea is found in the middle part of our ear.

  A)
  (i) and(ii)
  done clear
  B)
  (ii) and (iii)
  done clear
  C)
  (i) and (iii)
  done clear
  D)
  (i) and (iv)
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer47)

  Fill in the blanks with the correct combination of words.

  When a strip of \[\underline{\,\,\,\,P\,\,\,\,}\] metal is placed in \[\underline{\,\,\,\,Q\,\,\,\,}\] solution for some time, then the blue color of \[\underline{\,\,\,\,R\,\,\,\,}\] solution fades gradually and red-brown   \[\underline{\,\,\,\,S\,\,\,\,}\]   metal is deposited on the \[\underline{\,\,\,\,T\,\,\,\,}\] strip.

  A)
  P-copper, Q-zinc sulphate, R-zinc sulphate, S- zinc, T-copper
  done clear
  B)
  P-zinc, Q-copper sulphate, R-zinc sulphate, S-zinc, T-copper
  done clear
  C)
  P-zinc, Q-copper sulphate, R-copper sulphate, S-copper, T-zinc
  done clear
  D)
  P-Copper, Q-zinc sulphate, R-copper sulphate, S- copper, T-zinc
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer48)

  Which of the following statements is correct?

  i. The Indian name of Ursa Major Constellation is Saptrishi.

  ii. We can locate the position of the pole star in the night sky with the help of Ursa Major Constellation.

  iii. If we observe the pole star at different times in night, it appears that pole star revolve around the Ursa Major Constellation.

  iv. The star Sirus is located in the center of our galaxy

  v. The five main stars of Cassiopeia Constellation are arranged to form the shape of distorted letter W or M.

  A)
  i, ii and iii
  done clear
  B)
  ii and iii
  done clear
  C)
  iii and v
  done clear
  D)
  i, ii and v
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer49)
  The table given below has certain terms and five spaces named a, b, c, d and e.

  Cell	Feature/part	Function
  Bacteria plant cell \[\underline{\,\,\,\,c\,\,\,\,}\] \[\underline{\,\,\,\,e\,\,\,\,}\]	\[\underline{\,\,\,\,a\,\,\,\,}\]chloroplast spindle shaped selectively permeable	Movement \[\underline{\,\,\,\,b\,\,\,\,}\]\[\underline{\,\,\,\,d\,\,\,\,}\]protect the cell from its surroundings

  From the options given below choose the correct Combination of terms to fill the spaces.
  A)
  a-pseudopodia, b-respiration, c-muscle cell, d-expansion, e-nucleus.
  done clear
  B)
  a-flagella, b-photosynthesis, c-nerve cell, d- contraction, e-cell vacuole.
  done clear
  C)
  a-cilia, b-reproduction, c-blood cell, d- contraction, e-nucleus.
  done clear
  D)
  a-flagella, b-photosynthesis, c-muscle cell, d-contraetion, e-cell membrane.
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer50)

  Which of the following statements is incorrect?

  (i)  Using good quality seed is the only criterion to get high yield.

  (ii) Growing different crops in different seasons in the same field will deplete the nutrients of soil.

  (iii) All crop plants are sown as seeds in the field.

  (iv) Cells of root nodules of leguminous plants fix nitrogen.

  (v) Freshly harvested grains must be dried before storing.

  A)
  i and ii only
  done clear
  B)
  only iii
  done clear
  C)
  i, ii, iii and iv
  done clear
  D)
  All i, ii, iii, iv and v
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow