Arjuna JEE 2025 Practice Test - 02
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Questions and Answers

What does not change when the unit is changed?

  • The number of significant figures (correct)
  • The value of the physical quantity
  • The precision of the measurement
  • The unit of measurement

    • If α and β are the roots of the equation x^2 + px + q = 0, what is the value of α + β?

  • p
  • -q
  • -p (correct)
  • q

    • What is the correct expression for the force applied by a water stream?

  • Av^2
  • ρAv
  • ρv^2
  • ρAv^2 (correct)

    • If the wavelength of light is equal to the distance travelled by an electron in one second, what can be concluded?

    <p>The frequency of light is equal to the reciprocal of the time period of the electron</p> Signup and view all the answers

    To increase the kinetic energy of ejected photoelectrons, what should be increased?

    <p>Frequency of radiation</p> Signup and view all the answers

    Which of the following is not a factor that affects the force applied by a water stream?

    <p>Viscosity of water</p> Signup and view all the answers

    What is the correct statement about significant figures?

    <p>A change in unit may or may not change the number of significant figures</p> Signup and view all the answers

    What is the relationship between the roots of a quadratic equation?

    <p>α + β = -p</p> Signup and view all the answers

    What is the total duration of the SHORT PRACTICE TEST?

    <p>90 minutes</p> Signup and view all the answers

    What is the total number of questions in the test booklet?

    <p>24</p> Signup and view all the answers

    What is the maximum marks for the test?

    <p>96</p> Signup and view all the answers

    What is the penalty for a wrong response?

    <p>1 mark deduction</p> Signup and view all the answers

    What is the topic covered in Physics?

    <p>Units and Measurements (Complete Chapter)</p> Signup and view all the answers

    What is the topic covered in Chemistry?

    <p>Atomic Structure Till Debroglie Equation</p> Signup and view all the answers

    What type of pens should be used to mark the answers?

    <p>Blue/black dark ballpoint pens</p> Signup and view all the answers

    What should be avoided while marking the answers?

    <p>All of the above</p> Signup and view all the answers

    What should not be used to rectify filling errors on an OMR sheet?

    <p>Whiteners</p> Signup and view all the answers

    Where is writing permitted on the OMR sheet?

    <p>Only in the specified area</p> Signup and view all the answers

    What happens if there are multiple markings on an OMR sheet?

    <p>It will be treated as an invalid response</p> Signup and view all the answers

    What should not be done to the Answer Sheet (OMR)?

    <p>Folding or making stray marks</p> Signup and view all the answers

    What is the value of $\left(0.99\right)^{10}$ using Binomial approximation?

    <p>9.97</p> Signup and view all the answers

    What is the correct expression for acceleration due to gravity at height using the Binomial theorem?

    <p>g(1 - h/R)</p> Signup and view all the answers

    What is the purpose of weighing a body in air and water?

    <p>To find the relative density of the body</p> Signup and view all the answers

    What is the purpose of finding the sum of a series in a question?

    <p>To find the sum of the series</p> Signup and view all the answers

    What is the total number of neutrons in dipositive zinc ions with atomic number 30 and mass number 70?

    <p>36</p> Signup and view all the answers

    What is the radius of Bohr's orbit of a hydrogen atom?

    <p>√13</p> Signup and view all the answers

    Which orbit will an electron be in when it is in an excited state?

    <p>7</p> Signup and view all the answers

    If the energy of an electron in the ground state is -E, what will be the energy of the electron in the excited state?

    <p>-E/9</p> Signup and view all the answers

    If the angular momentum of an electron is √(10) ℏ, what will be the value of Z?

    <p>2.5</p> Signup and view all the answers

    What is the correct statement about the set of days in a week?

    <p>It is a finite set</p> Signup and view all the answers

    What is the correct relationship between the atomic number and the mass number of an atom?

    <p>Mass number = Atomic number + Neutrons</p> Signup and view all the answers

    What is the energy of an electron in the ground state of a hydrogen atom?

    <p>-13.6 eV</p> Signup and view all the answers

    Study Notes

    Arjuna JEE (2025) Short Practice Test - 02

    Test Details

    • Duration: 90 minutes
    • Date: 26/05/2024
    • Maximum marks: 96

    Topic Covered

    • Physics: Units and Measurements, Mathematical Tools (Algebra, AP series, GP series, Binomial Expression)
    • Chemistry: Atomic Structure (up to Debroglie Equation)
    • Mathematics: Basic Mathematics, Sets

    General Instructions

    • Fill in the particulars on the test booklet
    • The test consists of 24 questions, divided into three sections: Physics, Chemistry, and Mathematics
    • Each correct answer is worth 4 marks, and 1 mark will be deducted for a wrong response
    • No student is allowed to carry any textual material, electronic devices, etc. inside the examination room/hall

    OMR Instructions

    • Use blue/black dark ballpoint pens
    • Darken the bubbles completely
    • Never use pencils or whiteners to mark answers
    • Writing on the OMR Sheet is permitted only on the specified area
    • Multiple markings will be treated as invalid responses
    • Do not fold or make any stray mark on the Answer Sheet

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    Arjuna JEE 2025 Short Practice Test 02 PDF

    Description

    Practice test for JEE 2025 with 24 questions covering Physics, Chemistry, and Mathematics topics. Duration is 90 minutes.

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