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Railway Express - RRB NTPC Test 224
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Railway Express - RRB NTPC Test 224
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  • Question 1/10
    1 / -0.33
    Which one of the following figures represents the given statement?
    All English-speakers are intelligent,
    Some Hindi-speakers are also intelligent,
    No Hindi-speaker can speak English.
    Solutions

    The above figure represents, All English-speakers are Intelligent”.

    The above figure represents 
    “All English-speakers are intelligent,
    Some Hindi-speakers are also intelligent,
    No Hindi-speaker can speak English.

    Hence, option A is the correct answer.
  • Question 2/10
    1 / -0.33
    A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

    FGH, NOP, VWX, ?
    Solutions
    FGH = F + 1 = G + 1 = H
    H + 6 = N
    NOP = N + 1 = O + 1 = P
    P + 6 = V
    VWX = V + 1 = W + 1 = X
    X + 6 = D
    And hence, D + 1 = E
    E + 1 = F
    Hence, option B is the correct answer.
  • Question 3/10
    1 / -0.33
    A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

    3, 9, 27, 4, 16, 64, 5, 25, ?
    Solutions
    The series is as follows
    3, (3x3), (3x3x3), 4, (4x4), (4x4x4), 5, (5x5), (5x5x5).
    Hence, 125 will come in the place of question mark.

    Hence, option C is the correct answer.
  • Question 4/10
    1 / -0.33
    Which value among is greatest?
    Solutions


    Lcm of [3,2,6] = 6
    So,
     81/3 = 641/6 ....... (i)
    41/2  = 641/6 .........(ii)
    And,
    the third terms is 641/6.

    Hence all the values are equal.

    Method: 2
    3√8 = 2;
    2√4 = 2;
    6√64 = 2;
    so, all are equal.
  • Question 5/10
    1 / -0.33
    Find the difference between value of the polynomial x4 - 2x3+3x2 – 4x + 5 at 1 and -1.
    Solutions
    Given Polynomial: x4 − 2x3+3x2 – 4x + 5
    At x = 1
    ⇒ 1 – 2 + 3 – 4 + 5 = 3

    At x = -1
    ⇒ x4 – 2x3 + 3x2 – 4x + 5 
    ⇒ 1 + 2 + 3 + 4 + 5 = 15

    Difference = 3 – 15 = –12
  • Question 6/10
    1 / -0.33
    Find the mode of the data:
    1, 1/2, 1/2, 3/4, 1/4, 2, 1/2, 1/2, 1/4, 3/4
    Solutions
    The frequency table of the data is given below:
    xi Frequency (fi)
    1/4 2
    1/2 3
    3/4 2
    1 1
    2 1

    Clearly, the frequency of term 1/2 is maximum.
    Hence the mode of the data is     1/2.

    Definition: 
    In statistics, the mode is the value that is occurring repeatedly in a given set.
    We can also say, the value or number in a data set, which has a high frequency or appears more frequently is called mode. 
    A set of values may have one mode or more than one mode or no mode at all.
  • Question 7/10
    1 / -0.33
    Courier service comes under which sector?
    Solutions
    •  On the basis of production of goods or other related services within an economy, Sectors have been classified   as below:
    •  Primary Sector: This sector includes those activities that are based on natural production. Like, Agriculture,   Fishing, Mining and Quarrying, Forestry etc
    •  Secondary Sector: This sector follows the Primary Sector where natural products are changed to manufacture  different commodities, so, this sector is also known as Industry Sector. Like, Sugar Industry uses sugarcane to produce sugar, Cotton Industry uses cotton to woven into cotton fabric, etc.
    • Tertiary Sector: This sector provides services to Primary and Secondary sectors, so, it is also known as Service Sector. Like, Medical facilities, Education facilities, Postal services, Courier services, Transport services, Defense, IT sector, etc.
  • Question 8/10
    1 / -0.33
    The longest stage of mitosis is ______.
    Solutions
    • The longest phase in the process of mitosis is called prophase.
    • During cell division, The nucleus disappears after prophase. Cell division does not take a long time.Prophase is the longest phase of mitosis, but it occurs faster than interphase.
    • Anaphase is the shortest phase of mitosis. In anaphase, the sister chromatids are pulled apart to opposite ends of the cell.
  • Question 9/10
    1 / -0.33
    Who has been re-appointed as MD & CEO of Axis Bank?
    Solutions
    • Amitabh Chaudhry has been re-appointed as MD & CEO of Axis Bank.
    • He will be the Managing Director & CEO of the bank for a further period of 3 years, with effect from 1 January 2022 up to 31 December 2024.
    • He has been associated with Axis Bank since January 2019.
    • Axis Bank Limited is an Indian private sector bank.
    • It is headquartered in Mumbai, Maharashtra.
    • It was founded in December 1993.
    • "Badhti Ka Naam Zindagi" is the tagline of Axis Bank.
  • Question 10/10
    1 / -0.33
    Peroxyacetyl nitrate is a _____.
    Solutions
    • Peroxyacetyl nitrate is  a secondary pollutant present in photochemical smog.
    • It is thermally unstable and decomposes into peroxyethanoyl radicals and nitrogen dioxide gas.
    • Secondary pollutants are pollutants which form in the atmosphere. These pollutants are not emitted directly from a source.
    • Primary pollutants are formed and emitted directly from particular sources. Examples are -particulates, carbon monoxide, nitrogen oxide, and sulfur oxide.
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