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Railway Express RRB NTPC Test 183
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Railway Express RRB NTPC Test 183
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  • Question 1/10
    1 / -0.33

    In the following question, select the odd word from the given alternatives.
    Solutions

    All words have an odd number of letters, except for ‘STRAWBERRY’ that has an even number of letters.
    Hence, option C is the correct answer.

  • Question 2/10
    1 / -0.33

    Read the given statement and conclusions carefully and decide which of the conclusions logically follow(s) from the statement.

    Statement: Cricket is the most popular game in India and second most popular game in the world after football.

    Conclusion:

    I. Most of the Indians like cricket over football.

    II. Football is more popular in foreign countries.

    Solutions

     Both the conclusions are implicit in the given statement.

    Hence, option D is the right answer.

  • Question 3/10
    1 / -0.33

    Which number will replace the question mark (?) in the following series?

    2197, 196, 3375, 256, ?, 324
    Solutions

    The pattern is:

    133 = 2197

    142 = 196
    153 = 3375
    162 = 256
    173 = 4913
    182 = 324
    Hence, option A is the correct answer.

  • Question 4/10
    1 / -0.33

    A number is increased by 20% to get another number. By what percent the later number must be decreased to get the former number?
    Solutions

    Let  is first number and  is second number. Then



  • Question 5/10
    1 / -0.33

    The base and hypotenuse of a right angled triangle are 9 cm and 41 cm respectively. What is the area of the triangle?
    Solutions

    Given, Base and hypotenuse of a right angled triangle are 9 cm and 41 cm respectively.

    Perpendicular of right angled triangle =

    cm

    Area of the triangle =

  • Question 6/10
    1 / -0.33

    An inlet pipe can fill an empty tank in 6 hours. Another outlet pipe can empty the same filled tank in just 4 hours. If both pipes were opened when the tank was already filled, how much time will it take to empty the tank?
    Solutions

    Total capacity of tank = LCM (6,4) = 12 units

    Time to empty the full tank
    Note: here (-) sign indicates that efficiency/time was used to empty the tank.

  • Question 7/10
    1 / -0.33

    Which of the following statement is not true about Pteridophytes?
    Solutions

    * Sporophyte is dominating in Pteridophytes while gametophyte is dominating in Bryophytes.

    * Sporophyte has diploid cell type while Bryophytes have haploid cell type.

    * Spikemosses, clubmosses, ferns, quillworts are examples of Sporophyte.

    * True stem and leaves are present in Sporophyte.

  • Question 8/10
    1 / -0.33

    The dimension of which of the following is same as Momentum?
    Solutions

    The dimensions of Impulse and momentum are same.

    * The unit of momentum is the product of the units of mass and velocity that is kgm/s.

    * Whereas the SI unit of impulse is the newton second (Ns), and the dimensionally equivalent unit of momentum is the kgm/s.

    * The SI unit of Torque is Newton-metre or kgm2s−2.

  • Question 9/10
    1 / -0.33

    The velocity of light was first measured by __________
    Solutions

    The velocity of light was first measured by Roemer.

    Roemer became the first person to prove that light travels at a finite speed.

    John Roemer is currently the Elizabeth S. and A. Varick Professor of Political Science and Economics.

  • Question 10/10
    1 / -0.33

    A golf ball is made to spin when struck by the club and hence covers a larger distance; this statement is justified by which principle?
    Solutions

    A golf ball is made to spin when struck by the club and hence covers a larger distance; this statement is justified by Bernoulli’s Principle.

    Bernoulli’s Principle states that within a horizontal flow of fluid, points of higher fluid speed will have less pressure than points of slower fluid speed.

    This principle is stated by Bernoulli’s Equation, which is as follow-

    P1+1/2v12 +gh1 = Constant

    Where, The variables p1, v1 and h1 are pressure, speed and heght of fluid at point 1 and is density of fluid

    Another example of this principle is when water flows form a faucet, the stream of water becomes narrower as it descends and hence the speed increases.

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