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RRB Group D Mix Test 46
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RRB Group D Mix Test 46
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  • Question 1/21
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    One sum is divided into 120 men and some women in the ratio of 15: 21. If every man gets 5 rupees and the woman gets 4 rupees then how much is the number of women?

    Solutions

     

  • Question 2/21
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    In a certain code language, if 'ROUGH' is written as '37916' and 'HANGER' is written as '624153', then how will 'HONOUR' be written in the same language?

    Solutions

    As,

    ROUGH → 37916 ....... (i)

    And HANGER → 624153 ....... (ii)

    Similarly,

    Equation (i) and (ii) from

    HONOUR → 674793

    So, HONOUR is written as 674793.

     

  • Question 3/21
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    Two people take 9 days to complete one task, how many more people will be required to complete double work in 12 days?

    Solutions

     

  • Question 4/21
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    What is the name of the spacecraft that first completed the personal financed human spacecraft?

    Solutions

    Space Ship One is the name of the first private funded human spacecraft.

    1. Russia took the first step in space.

    2. America has achieved most success in space.

    3. India is one of the 5-6 countries of the world in the space sector.

    4. India left the Mangalyaan and astounded the world and made a record in the first attempt.

     

  • Question 5/21
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    When the diameter of the wire is half then the capacity of  flow of current  will be?

    Solutions

    When the diameter of the wire is half, the current flow capacity is 1/4.

     

  • Question 6/21
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    Mean of first 20 natural numbers is:

    Solutions

     

  • Question 7/21
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    x-mean x1, x2, x3, ................ xn is the standard deviation of observations:

    Solutions

     

  • Question 8/21
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    Solutions

     

  • Question 9/21
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    If there is a difference of Rs 3 in the selling price on selling an item on the profit of 4% and 14%, then the ratio of both selling price is-

    Solutions

     

  • Question 10/21
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    Moving through the 3/4 times of  real speed, a person reaches 20 minutes late  at their destination due to fixed time. What is the real time in determining this distance?

  • Question 11/21
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    The mountain atmosphere is cold due to low-

    Solutions

    The atmosphere is cold due to the atmospheric altitude. The wide dispersion surrounded by the wind around the earth is called the atmosphere. Studies of the upper surface of the atmosphere are called scurology and the study of the lower layer is called Meterology. The highest concentration of nitrogen in the atmosphere is 78% and 21% oxygen.

    1. Mountains are cooled due to atmospheric altitude.

    2. Transmission of heat in gasoos and fluid is done by convection.

    3. The atmosphere is heated by convection method.

    4. Convergent heat is transmitted by the conduction method.

    5. The atmosphere is cold when it gets up.

    6. If there is a moist air then cooling on it goes up condensation and makes rain.

    7. Rain water is the pureest water.

     

  • Question 12/21
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    Which of the following are the Electro-magnetic waves?

    Solutions

    Light waves are electromagnetic waves. Electromagnetic waves are ray rays, Xμ rays, ultraviolet rays, visualization, infrared radiation etc. There are no electromagnetic waves, electrodynamic waves, cathode rays, canal rays, αμ rays, βμ rays, sound waves etc.

    1. At some place, the kummi area of ​​the earth is expressed by three elements: light is light.

    2. The angle between the geographical and post-magnetic postures at some place is called angle angle.

    3. At any place, the entire magnetic field of the Earth creates an angle with the plane, it is called the bow of worship.

    4. The angle of bow of earth on the pole of the Earth is 90 ° and 0 ° on the equator.

    5. The horizontal component of the entire magnetic field of the Earth (V) varies from place to place.

     

  • Question 13/21
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    Solutions

     

  • Question 14/21
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    What causes us to hear the echo?

    Solutions

    Reactions are heard due to reflection. The minimum distance between the source and the reflective surface should be 17 m (16.6 m) to hear the echo.

    1. The echo is heard due to the reflection does not depend on the trick frequency of sound of any medium.

    2. Due to the refraction of the sound, the noise is heard much longer at night than the sound day.

    3. The effect of sound on the ear stays up to 110 seconds.

    4. When the sound goes from one medium to another, the movement and sound length of the sound changes.

    5. Increasing the heat of the medium increases the movement of sound to 0.61 m / s.

    6. The movement of sound in the iron is 5130 m / s.

     

  • Question 15/21
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    Which of the following determines time-zone of a place?

    Solutions

    Time measurement is done through longitude.

    1. The northern hemisphere north of the equator and on the south is called the southern hemisphere.

    2. 0 ° to 231o2 latitude in the northern hemisphere is called the cancer line.

    3. 0 ° to 231o2 latitude in the southern hemisphere is called Capricorn.

    4. In both hemispheres it is called the temperate zone from 661o2 to 90°.

    5. In the two hemispheres 0 ° to 231o2 latitudes are called the tropics.

    6. There is a difference of 4 minutes between a longitude.

    7. Time measurement is done through longitude.

     

  • Question 16/21
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    If,sin θ + cos θ = √3 cos θ ,then the value of cos θ – sin θ  is  ?

    Solutions

     

  • Question 17/21
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    Which of the following frequency is infrasound?

    Solutions

    The frequency of 10Hz is infrasound.

    Inverted waves - Sound waves with frequency below 20Hz are called undesirable waves.

    Audio waves - frequency between 20Hz to 20,000Hz is called audio waves.

    Ultrasonic waves - Waves above 20,000Hz are called molecular waves.

    1. Sound wave is longitudinal mechanical waves.

    2. Bat, cat, dog etc. animals can listen to waves of more than 20,000Hz.

    3. The movement of sound through some medium depends primarily on the elasticity and density of the medium.

     

  • Question 18/21
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    If α + β = 90o and α = 2β , then cos2 α + sin2 β is equal to what?

    Solutions

    Let, α = 60o, β = 30o

    α = 2β

    Hence, cos2α + sin2β = cos260o + sin230o

     

  • Question 19/21
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    How many electrons will be needed to organize 1 ampere current?

    Solutions

     

  • Question 20/21
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    Which is used in electrical decomposition ?

    Solutions

    Faraday's law is used in electrical decomposition.

    Ohm's law - The current, which is flowing through a conductor on the constant heat (1), is possible to the potential difference between its ends.

    1. S.I. of the light intensity It is a candied candle.

    2. Frequency of S.I. Molecular Hertz (HZ).

    3. Solid angle S.I. The standard is stereadian.

    4. S.I. of the plane angle Molecular radians.

    5. Light year is used to measure long distances.

    6. 1 light year = 9.46 × 1015 meters.

    7. Distance S.I. It is the lightest light year.

    8. The largest unit of distance measurement is Parsek.

     

  • Question 21/21
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    Choose the wrong statement from the following:

    Solutions

    A papal P. AP. In the meter dynamometer, the moving horoscope is located on the axis that is formed by interconnecting each other.

    1. Usually, the refractory decrease decreases even after heating increases.

    2. The refractive index of any medium varies for different light.

    3. With the increasing wavelength, the value of the refractory decreases.

    4. The red color is the lowest.

    5. The purple duration of refraction is highest.

    6. The angle of incidence must be greater than the angle of revolutionary angle for complete internal reflection.

     

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