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RRB Group D Mix Test 50
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RRB Group D Mix Test 50
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  • Question 1/10
    1 / -0

    Who discovered radium?

    Solutions

    Radium was discovered by Marie Curie and her husband Pierre Curie, in a Uraninite (pitchblende) sample.

     

  • Question 2/10
    1 / -0

    A round balloon of radius r subtends an angle α at the eye of an observer while the angle of elevation of its center is β. The height of the center of the balloon is:

    Solutions

    Let O be the center of balloon of radius r. The observer’s eye is at C.

    ∠ACB = α and   ∠OCD = β clearly, CA and CB are tangents to the circle. So

    ∠ACO = ∠BCO = α/2

    In right angled ∆OBC,

     

  • Question 3/10
    1 / -0

    The simplified value of  is?

    Solutions

     

  • Question 4/10
    1 / -0

    Solutions

     

  • Question 5/10
    1 / -0

    The Asian Infrastructure bank approved a huge USD 2 million loan for 5 projects in which of the following states: 

    Solutions

    Asian Infrastructure has approved it for the State of Andhra Pradesh.

     

  • Question 6/10
    1 / -0

    DIRECTIONS: Read the following information carefully and answer the questions given below.

    In a certain code language ‘monsoon comes India in June’ is written as ‘maa naa laa aaa baa’, ‘monsoon hits India’ is written as ‘aaa maa raa’. ‘India will enjoy’ is written as ‘zaa yaa aaa’ and ‘comes enjoy monsoon’ is written as ‘baa maa zaa’.

    Which of the following represents code for ‘India will enjoy monsoon'? 

    Solutions

    Monsoon comes India in June = maa naa laa aaa baa   ____(1)

    Monsoon hits India = aaa maa raa   ________(2)

    India will enjoy = zaa yaa aaa     _________(3)

    Comes enjoy monsoon = baa maa zaa  ________(4)

    From (1),(2) and (4), monsoon = maa

    From (1),(2) and (3),India = aaa

    From (3) and (4),enjoy = zaa

    From (1) and (4), comes = baa

    From (3), will = yaa
    From (2), hits = raa

    From (1), in/June = laa/naa

     

  • Question 7/10
    1 / -0

    Ajay Bisaria has been appointed next High Commissioner to: 

    Solutions

    Succeeding Gautam Bhambawale, He has been appointed the High Commissioner to Pakistan.

     

  • Question 8/10
    1 / -0

    Instead of multiplying a number by 0.72, a student multiplied it by 7.2. If this answer was 6480 more than the correct answer, then the original number was:

    Solutions

     

    Let the original number be a, then

    a * 7.2 = (a*0.72)+6480

    ⇒7.2a-0.72a=6480

    ⇒6.48a=6480


     

  • Question 9/10
    1 / -0

    DIRECTIONS: In the question below, a statement is given followed by two assumptions, I and II. You have to consider the statement to be true, even if it seems to be at variance from commonly known facts. You are to decided which of the given assumptions, can definitely be drawn from the given statement.

    Statement: The number of people living below poverty line in urban areas has increased since last year.

    Assumptions:
    I. People living in rural areas are not below the poverty line.
    II. A similar survey was conducted last year.

    Solutions

    Only assumption II is implicit in the statement.

     

  • Question 10/10
    1 / -0

    DIRECTIONS: In the following questions, four alternatives are given in which one is odd from the rest alternatives, you have to choose that alternative.

    Choose the odd one out from the given alternatives.

    Solutions

    Except centaur all others are the animals that are still existing today, while centaur are half men, half horse.

     

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