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RRB ALP 2025 Mix Test - 46
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RRB ALP 2025 Mix Test - 46
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  • Question 1/10
    1 / -0.33

    A pyranometer is a ______ measuring instrument, commonly used for climate research or monitoring weather performance.

    Solutions

    The Correct Answer is A: solar irradiance.

    Explanation:

    A pyranometer is an instrument used to measure solar irradiance, which refers to the total solar radiation received on a surface per unit area. It is widely used in climate research, meteorology, and solar energy studies to monitor sunlight intensity.

    Key Points:

    • Pyranometers measure global solar radiation on a horizontal surface.
    • They function based on thermopile sensors or photodiodes.
    • Used in solar farms, weather stations, and climate monitoring.

    Additional Information:

    • Atmospheric pressure – Measured using a barometer.
    • Wind speed – Measured using an anemometer.
    • Cloud ceiling – Measured using a ceilometer.
  • Question 2/10
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    A disease like COVID-19 is a kind of:

    Solutions

    The correct answer is (c) Zoonotic disease

    Explanation:

    • COVID-19 is a zoonotic disease, meaning it is caused by a pathogen that spreads from animals to humans.
    • It is caused by the SARS-CoV-2 virus, which is believed to have originated from bats and possibly transmitted through an intermediate host before infecting humans.
    • Other examples of zoonotic diseases include rabies, Ebola, bird flu (H5N1), and swine flu (H1N1).

    Information Booster:

    Types of Zoonotic Diseases:

    1. Viral Zoonotic Diseases:
      • COVID-19 (SARS-CoV-2)
      • Rabies (Lyssavirus)
      • Swine flu (H1N1)
      • Bird flu (H5N1)
    2. Bacterial Zoonotic Diseases:
      • Tuberculosis (Mycobacterium bovis)
      • Plague (Yersinia pestis)
      • Leptospirosis
    3. Parasitic Zoonotic Diseases:
      • Malaria (Plasmodium spp. from mosquitoes)
      • Toxoplasmosis (Toxoplasma gondii)
    4. Fungal Zoonotic Diseases:
      • Ringworm
      • Histoplasmosis

    Additional Knowledge:

    • Foodborne diseases occur due to the consumption of contaminated food.
      • Examples: Food poisoning, Salmonella infection, Listeriosis.
    • Protein Deficiency Disease: Diseases caused by a lack of protein in the diet.
      • Examples: Kwashiorkor, Marasmus.
    • Waterborne disease -These diseases spread through contaminated water.
      • Examples: Cholera, Typhoid, Hepatitis A.
  • Question 3/10
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    Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.

    Statements:

    1. All soldiers have a rifle.

    2. Aayush is a soldier.

    Conclusions:

    I. Aayush has a rifle.

    II. People other than soldiers do not have rifles.

    Solutions

    Given:

    Statements:

    1. All soldiers have a rifle.

    2. Aayus his a soldier.

    Evaluating the Conclusions:

    Conclusions:

    I. Aayush has a rifle - Follow (Since all soldiers have a rifle and Aayush is a soldier it logically follows that Aayush must have a rifle).

    II. People other than soldiers do not have rifles - Does not Follow (All soldiers have a rifle", but they do not say that only soldiers have rifles).

    So, Only Conclusion I follows.

    Thu, the correct option is: (a)

  • Question 4/10
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    A ball of mass 0.5 kg is thrown vertically upwards and rises to a height of 20 m. The initial velocity of the ball is: (Consider g = 10m/s2)

    Solutions

    The Correct Answer Is: (A) 20 m/s

    Explanation:

    To find the initial velocity of the ball, we can use the following kinematic equation

    So, the initial velocity of the ball is 20 m/s.​​

    • v is the final velocity (0 m/s at the peak of the motion),
    • u is the initial velocity (which we need to find),
    • a is the acceleration due to gravity (-10 m/s², as the ball is moving upwards),
    • s is the displacement (20 m, the height the ball rises).

    Information Booster:

    • The equation used here is a standard kinematic equation to relate initial velocity, final velocity, acceleration, and displacement.
    • When an object is thrown vertically upwards, it decelerates due to gravity until it comes to rest at the highest point, where the final velocity becomes zero.
  • Question 5/10
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    In a certain code language, 'WGHLTY' is written as 'TOGCBR'. Which of the options given below will be the code for 'TGDBHM' in that code language?

    Solutions

    Correct Answer is: HCWYBO

    Given: 'WGHLTY' is written as 'TOGCBR'

    Logic: Letters are decreasing - 5 place.

    So, the code of TGDBHM is HCWYBO.

    Thus, correct option is (d).

  • Question 6/10
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    Select the option figure in which the given figure is embedded as its part. (Rotation is not allowed.)

    Solutions

    Correct Answer is:

    The correct embedded figure is shown below.

    Thus, correct option is (a).

  • Question 7/10
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    If 'A' means '+', 'S' means '–', 'M' means '×', 'D' means '÷', 'B' means '(' and 'F' means ')', then solve the following expression:

    B700A110S90FDB9M10S10F

    Solutions

    Correct Answer is: 9

    Given: B 700 A 110 S 90 F D B 9 M 10 S 10 F

    Symbols

    A

    S

    M

    D

    B

    F

    Mathematical Operation

    +

    ​–​

    ​×​

    ​÷​

    (

    )

    After changing symbols into mathematical operations new equation will be-

    ( 700 + 110 - 90 ) ÷ ( 9 × 10 - 10 )

    = ( 810 - 90 )÷( 90 - 10 )

    = 720 ÷ 80

    = 9

    Thus, the correct answer is (a).

  • Question 8/10
    1 / -0.33

    Select the Venn diagram that best represents the relationship between the following classes.

    Parrot, Bird, Tiger

    Solutions

    Given: Parrot, Bird, Tiger

    Let's explain all the words;

    Parrot is a type of Bird (i.e., it is a specific kind of bird).

    Tiger is an animal, but not a bird, so it falls outside the Bird category.

    Bird is the broader category that includes parrots as one of its types.

    From the given information Venn diagram will be:

    Thus, the correct option is (d).

  • Question 9/10
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    Two circular coils A and B, have the same radius R, and carry the same current I, but have 50 and 100 turns, respectively. The magnetic field produced:

    Solutions

    The correct answer is (b) by B > that of A

    Explanation:

    The magnetic field at the center of a circular coil carrying current is given by the formula:

    where:

    • B = Magnetic field
    • μ0​​​ = Permeability of free space
    • N = Number of turns in the coil
    • I = Current
    • R = Radius of the coil

    Since both coils A and B have the same radius (R) and current (I) but different numbers of turns:

    • Coil A has N = 50
    • Coil B has N = 100

    Since the magnetic field is directly proportional to the number of turns (N):

    Thus, the magnetic field produced by coil B is greater than that of coil A.

    So, the correct answer is:

    B) by B > that of A

    Information Booster:

    Factors Affecting the Magnetic Field of a Circular Coil:

    • Number of Turns (N): More turns → Stronger magnetic field.
    • Current (I): More current → Stronger magnetic field.
    • Radius (R): Larger radius → Weaker magnetic field (inversely proportional).

    Applications of Circular Coil Magnetic Fields:

    • Used in electromagnets and solenoids.
    • Helps in designing motors, transformers, and magnetic field sensors.
  • Question 10/10
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    Zakir travels from City A to City B. If Zakir drives his car at 2/3 of his normal speed, then he reaches City B 10 minutes late. Find the time (in minutes) that Zakir would have taken to travel from City A to City B if he drove at his normal speed.

    Solutions

    Correct Answer is: 20

    Given:

    If speed decreases, time increases inversely

    Solution:

    Let the normal time to travel = x minutes

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