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NSO - Mock Test - 9

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NSO - Mock Test - 9
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Weekly Quiz Competition
  • Question 1
    1.2 / -0
    If square represents 'hall', circle represents 'water', diamond shows 'people', arrow represents 'educated' and triangle represents 'dirty', then which of the following represents 'people sitting in dirty hall'?

    Solution


    People = diamond
    dirty = triangle
    hall = square
    Number that is common for these 3 shapes is 6 which is represented by the red line.
  • Question 2
    1.2 / -0
    If MONK is written as PRQN, STRONG is written as VWURQJ, then how will SCIENCE be written in that code?
    Solution
  • Question 3
    1.2 / -0
    If Sumer is standing 123rd from left and 45th from right in a row, then how many persons are standing in that row?
    Solution
    Total number of persons standing = total persons on left + total persons on right - Sumer's position = 123 + 45 - 1 = 167
  • Question 4
    1.2 / -0
    Which symbol is opposite to ?

    Solution
    The symbols of the adjacent faces to the face with the symbol * are @, –, + and $. Hence 8 is opposite to symbol *.
    This shows that the opposite pairs are @ and $, * and 8, – and +.
  • Question 5
    1.2 / -0
    Jacky ranks 18th from the top. If the total pupils in the list is 50, then what is his rank from the bottom?
    Solution
    18th from top which means 17 people above him.
    Let P number of people be after him.
    Then Jacky's position from bottom (p + 1)th.
    50 - (17 + 1) = p
    p = 32
    His position from the bottom (p + 1) = 33rd.
  • Question 6
    1.2 / -0
    In a certain code
    SKY IS BLUE is written as 451
    IS IT FINE? Is written as 537
    IT IS SKY will be written as 453

    Then how will BLUE SKY IS FINE be written in that language?
    Solution
    SKY IS BLUE is written as 451
    IS IT FINE? Is written as 537
    IT IS SKY will be written as 453
    IS (5) is common in all 3 sentences (IS = 5)
    IT (3) is common in last two sentences.(IT = 3)
    SKY(4) is common in first and last sentence.(SKY = 4)
    So, FINE = 7
    BLUE = 1


    and BLUE SKY IS FINE = 1457 or 7145
  • Question 7
    1.2 / -0
    Complete the missing part of the shape by choosing the correct option.

    Solution
    With figure (1) the given shape completes as follows:

  • Question 8
    1.2 / -0
    Complete the series.

    34, 67, 133, 265, ____
    Solution
    The pattern is
    34 x 2 = 68 – 1 = 67
    67 x 2 = 134 – 1 = 133
    133 x 2 = 266 – 1 = 265
    265 x 2 = 530 – 1 = 529
  • Question 9
    1.2 / -0
    Cup is to coffee as bowl is to
    Solution
    We drink coffee in a cup and have soup in a bowl. Choices 2 and 3 are incorrect because they are other utensils.
  • Question 10
    1.2 / -0
    How many triangles can be seen in the given shape?

    Solution

    The simplest triangles are AHB, GHI, BJC, GFE, GIE, IJE, CEJ and CDE i.e. 8 in number.
    The triangles composed of two components each are HEG, BEC, HBE, JGE and ICE i.e. 5 in number.
    The triangles composed of three components each are FHE, GCE and BED i.e. 3 in number.
    There is only one triangle i.e. AGC composed of four components.
    There is only one triangle i.e. AFD composed of nine components.
    Thus, there are 8 + 5 + 3 + 1 + 1 = 18 triangles in the given figure.
  • Question 11
    1.2 / -0
    Which of the following options represents fat cell?
    Solution
  • Question 12
    1.2 / -0
    Which of the following is correct for a statically achieved positive charge?
    Solution

    A positively charged body will always attract a negative charge.

  • Question 13
    1.2 / -0
    Which of these halides are used in photographic films?
    Solution

    Silver halides are used in photographic film and photographic paper, including graphic art film and paper, where silver halide crystals in gelatin are coated on to a film base, glass or paper substrate. Silver fluoride is not used in photography.

  • Question 14
    1.2 / -0
    Out of these planets, which will get the lowest amount of heat from the Sun of our solar system?
    Solution
    Saturn is the planet most far away, in our solar system. Thus it will receive the lowest amount of sunlight from our Sun.
  • Question 15
    1.2 / -0
    Which compound has been written incorrectly in the given reaction?

    2 Mg (s) + O2 (g) → 2 MgO²(s)
    Solution

    Magnesium reacts with oxygen in the air according to the equation:

    2 Mg (s) + O2 (g) → 2 MgO (s). In the question, the compound incorrectly written is MgO² which should actually be MgO.

  • Question 16
    1.2 / -0
    Which of the following is used in making cosmetics?
    Solution

    Paraffin Wax is used for many types of products such as lipsticks, baby products and makeup products.

  • Question 17
    1.2 / -0
    Which of the following is a type of Rabi crop?
    Solution
    Wheat is one of the examples of a Rabi crop. Rabi crops are sown in winter and are harvested in the spring.
  • Question 18
    1.2 / -0
    Which of the following is the correct representation of an onion peel cell?
    Solution


    The following observations are observed:
    There are a large number of regularly shaped cells lying side by side and each cell has a distinct cell wall.
    A distinct nucleus is present on the periphery of each cell.
    Lightly stained cytoplasm is observed in each cell.
  • Question 19
    1.2 / -0
    Which of the following is the process of separating grains or seeds from chaff?
    Solution
    In threshing, grains or seeds are separated from chaff.
  • Question 20
    1.2 / -0
    Which of the following can fix atmospheric nitrogen in soil?
    Solution
    Blue green algae is a type of bacteria which is used to fix atmospheric nitrogen in soil.
  • Question 21
    1.2 / -0
    What happens to paper when there is more cellulose in the paper?
    Solution

    Cellulose is good for paper. So more the cellulose, more fine the paper will be.

  • Question 22
    1.2 / -0
    Which of the following is not a micro organism?
    Solution
    It is the scientific name of mango which is not a of micro organism.
  • Question 23
    1.2 / -0
    Which of following is the unit of measurement of sound intensity?
    Solution
    Decibel (dB) is the measure of the intensity of sound.
  • Question 24
    1.2 / -0
    Which of the following cannot be obtained from wood pulp?
    Solution

    Shelter can be obtained from wood but not from wood pulp.

  • Question 25
    1.2 / -0
    Which of the following is the cause of Diarrhea?
    Solution
    Diarrhea can be caused by parasitic infection, bacterial infection, viral infection, functional bowel disorders or reaction to medicines.
  • Question 26
    1.2 / -0
    Which of the following substances contain lead in them?
    Solution
    Lead is used in a variety of consumer and manufacturing products, including ammunition, batteries, plastics, tank liners, pesticides and some metal alloys. The metal has been used since ancient times.
  • Question 27
    1.2 / -0
    What are the advantages of using CNG and LPG as fuels?
    Solution
    Following are the advantages of using CNG and LPG as fuels: (a)They are more efficient. (b)They can be easily transported; either in cylinders or through pipelines. (c)They are less polluting than other fossil fuels.
  • Question 28
    1.2 / -0
    Plants excrete which of the following two gases during excretion?
    Solution

    Plants need to excrete excess carbon dioxide and oxygen. Carbon dioxide is a waste product of aerobic respiration in plant cells. Oxygen is a waste product of photosynthesis.

  • Question 29
    1.2 / -0
    Which of the following is not correct about synthetic fibres?
    Solution
    Natural fibres such as wool and cotton are obtained from plants and animals are not synthetic fibres. Synthetic fibres are small units of chemicals joined together in the form of chain. The chain so formed is called a polymer. Polymer is a Greek work in which 'poly' means many and 'mer' means units. Thus, polymer means 'made of many units joined together'.
  • Question 30
    1.2 / -0
    Which of the following is used to make electric switches?
    Solution

    Bakelite is a poor conductor of heat and electricity. So it is used for making electric switches.

  • Question 31
    1.2 / -0
    In human cheek cell, nucleus is separated from the cytoplasm by a membrane called the nuclear membrane. In the figure, which of the following parts represents the nuclear membrane?
    Solution
  • Question 32
    1.2 / -0
    It gives shape and rigidity and also protects against variations in temperature or wind speed. Which of the following parts of the plant cell performs this function?
    Solution

    Cell wall outside the cell membrane gives shape and rigidity and also protects against variations in temperature or wind speed.

  • Question 33
    1.2 / -0
    Which of the following is a noble metal?
    Solution

    Noble metals are the metals that have the least tendency to react and have the property to maintain their lustre for long time. Gold is one of the noble metals.

  • Question 34
    1.2 / -0
    Which of the following metals is used as a protective screen in X-rays?
    Solution
    Lead is used as a protective screen in X-rays.
  • Question 35
    1.2 / -0
    Yeast is involved in the production of
    Solution
    The main purpose of yeast is to serve as a catalyst in the process of fermentation, which is essential in the making of bread and cakes. Alcohol is the metabolic product of yeast in wine and beer making. Specifically, it is produced by yeast during fermentation.
  • Question 36
    1.2 / -0
    Which of the following is an example of thermoplastics?
    Solution

    Plastics which can be deformed and bend easily are known as thermoplastics. PVC is an example of it as it can easily deform or bend.

  • Question 37
    1.2 / -0
    Manu was heating oil to fry potato chips. All of a sudden the cooking oil caught fire. What should Manu do in such a situation?

    (a) Pour water to extinguish fire.
    (b) Switch off the flame of the burner.
    (c) Put a lid on the frying pan to cut off contact between fuel and oxygen.
    (d) Pour cold oil in the frying pan.
    Solution
    Switch off the flame of the burner. Put a lid on the frying pan to cut off contact between fuel and oxygen and the flame will go off.
  • Question 38
    1.2 / -0
    At what point of the temperature, vapour pressure of a liquid becomes equal to the atmospheric pressure?
    Solution
    The temperature at which the vapour pressure of a liquid becomes equal to atmospheric pressure is called boiling point. At this temperature, the liquid starts boiling. Example: Boiling temperature of water is 100 degree Celcius.
  • Question 39
    1.2 / -0
    When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to
    Solution
    The rise of water in the dropper is due to atmospheric pressure. When all the air escapes from the nozzle, the atmospheric pressure, which is acting on the water, forces the water to fill the nozzle of the dropper.
  • Question 40
    1.2 / -0
    Which of the following non-metals is used to prevent rancidity in the packed food stuff?
    Solution

    Nitrogen is flushed in chips packets to prevent rancidity.

  • Question 41
    1.2 / -0
    Sodium metal can be stored in which of the following?
    Solution
    Sodium metal is kept in kerosene.
  • Question 42
    1.2 / -0
    Which of the following is the hardest natural substance on the Earth?
    Solution

    Diamond is the hardest naturally occurring substance found on the Earth.

  • Question 43
    1.2 / -0
    Alida runs her toy car on dry marble floor, wet marble floor and on a newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be
    Solution
    Force of friction depends on the nature of surfaces in contact. The rougher the surface, the more is the friction between the surfaces in contact and vice-versa. Roughness present in the given surfaces can be arranged in an ascending order as:
    wet marble floor < dry marble floor < newspaper < towel
    Hence, the correct sequence of these surfaces when arranged according to the increase in the force of friction acting on the car is – wet marble floor, dry marble floor, newspaper and towel.
  • Question 44
    1.2 / -0
    Fibre made from which of the following synthetic fibres does not get wrinkled easily?
    Solution
    Polyester is a synthetic fibre. Fabric made from this fibre does not get wrinkled easily. It remains crisp and is easy to wash. So, it is quite suitable for making dress material.
  • Question 45
    1.2 / -0
    Which of the following is/are true for sowing seeds into the soil?
    Solution
    Sowing is the process of addition of seeds into the soil. Seeds are sown in the field by two methods namely, broadcasting and transplanting.
    Transplanting is developing young plants on a nursery bed and then transferring seedlings on to a field with proper spacing. It is done mainly in case of paddy crop.
  • Question 46
    1.2 / -0
    Label the parts of the given graph.

    Solution
    A


  • Question 47
    1.2 / -0
    What is the basic difference between the two components of flame as shown in the figure?

    Solution
    A luminous flame is a bright yellow flame that gives off light. It undergoes incomplete combustion as it does not get the oxygen that it requires.
    A non-luminous flame is colorless and is much hotter. It undergoes complete combustion as it draws much more oxygen and gets much hotter.
  • Question 48
    1.2 / -0
    Match the following items in column 1 with their meanings in column 2.

    Column 1 Column 2
    1. Polyester a. Breaks on bending
    2. Thermosetting plastic b. Rays are not parallel to the incident rays
    3. Regular reflection c. Reflected rays are parallel to each other
    4. Diffused reflection d. Fabric does not wrinkle easily
    Solution
    Column 1 Column 2
    1. Polyester d. Fabric does not wrinkle easily
    2. Thermosetting plastic a. Breaks on bending
    3. Regular reflection c. Reflected rays are parallel to each other
    4. Diffused reflection b. Rays are not parallel to the incident rays
  • Question 49
    1.2 / -0
    Which of the following are the features related to given constellations?

    (A) Big dipper
    (B) The Cassiopeia
    Solution
    Ursa Major is also referred to as the Big Dipper, the Great Bear or the Saptarishi (in India). It consists of seven prominent stars that are placed in the form of a dipper or in the shape of a bear.
    Cassiopeia is another constellation, which can be located in the northern sky. It is visible during winter in the early part of the night. It looks like a distorted letter 'M' or 'W'. It has a clusters of stars.
  • Question 50
    1.2 / -0
    Shubra took a piece of burning charcoal and collected the gas evolved in a test tube. What are the equations involved?
    Solution
    To check the nature of the gas, first she has to dissolve the gas in water. Then, she has to test this gaseous solution with litmus paper. If red litmus turns blue, it is basic in nature. If blue litmus turns red, it is acidic in nature.

    (a) Carbon dioxide + Water Carbonic acid
    (b) Sulphur dioxide + Water Sulphurous acid
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