10th Grade(Class) Counseling Test

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Partik
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Quizzes Created: 2 | Total Attempts: 499
| Attempts: 110
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  • 1/12 Questions

    Moving Charge has-

    • Electric Field
    • Magnetic Field
    • Both
    • None
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About This Quiz

This 10th Grade counseling test assesses knowledge in Physics, covering topics like pH levels, stomata functions, light behavior, capacitors, charge dynamics, and atomic structure. It is designed to evaluate and reinforce students' understanding of fundamental physics concepts.

Physics Quizzes & Trivia

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  • 2. 

    Stomata plays an important role in-

    • Respiration

    • Photosynthesis

    • Transpiration

    • All Of Above

    Correct Answer
    A. All Of Above
    Explanation
    Stomata, small openings on the surface of leaves, play an important role in various plant processes. They facilitate respiration by allowing the exchange of gases, such as oxygen and carbon dioxide, with the atmosphere. Stomata also play a crucial role in photosynthesis, as they enable the entry of carbon dioxide, a key ingredient for photosynthetic reactions. Additionally, stomata are responsible for transpiration, the process by which water vapor is released from plants. Therefore, the correct answer is "All Of Above" as stomata are involved in respiration, photosynthesis, and transpiration.

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  • 3. 

      For what value of ‘k’ will the equations 13x+23y-1=0 and kx–46y-2=0 represents intersecting lines?

    • K equals to 26

    • K not equal to 26

    • K equals to 13

    • K not equal to 13

    Correct Answer
    A. K not equal to 26
    Explanation
    If the two lines represented by the given equations intersect, they must have a unique solution. This occurs when the determinant of the coefficients of x and y is not zero. The determinant in this case is 13*(-46) - 23*k. For the lines to intersect, this determinant must not equal zero. Therefore, k must not be equal to 26.

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  • 4. 

    If two coins are tossed simultaneously, find the probability of getting exactly two heads.

    • 1/4

    • 1/2

    • 3/4

    • 1

    Correct Answer
    A. 1/4
    Explanation
    When two coins are tossed simultaneously, there are a total of four possible outcomes: HH, HT, TH, and TT. Out of these four outcomes, only one outcome (HH) has exactly two heads. Therefore, the probability of getting exactly two heads is 1 out of 4, which can be written as 1/4.

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  • 5. 

    In Single Plate Spherical Capacitor-

    • Other Plate need not to be there

    • Othe Plate is at infinity

    • Other Plate is at Origin

    • None of Above

    Correct Answer
    A. Othe Plate is at infinity
    Explanation
    In a single plate spherical capacitor, the other plate is considered to be at infinity. This means that the second plate is assumed to be so far away from the first plate that its effect is negligible. Therefore, the capacitance of the capacitor is determined solely by the properties of the single plate.

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  • 6. 

    If HCF (252, 378) = 126, find their LCM. 

    • 756

    • 657

    • 567

    • 126

    Correct Answer
    A. 756
    Explanation
    The HCF (Highest Common Factor) of 252 and 378 is 126. The LCM (Least Common Multiple) can be found by dividing the product of the two numbers by their HCF. So, by dividing (252 * 378) by 126, we get the LCM as 756.

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  • 7. 

    For Total Internal Reflection, Light Ray should travel from- 

    • Denser to Rarer Medium

    • Rarer to Denser Medium

    • Any Plane with same frequency

    • Does not depend on refractive index

    Correct Answer
    A. Denser to Rarer Medium
    Explanation
    Total internal reflection occurs when a light ray travels from a denser medium to a rarer medium, such as from water to air. This phenomenon happens because the angle of incidence is greater than the critical angle, causing the light ray to be completely reflected back into the denser medium instead of refracting through the boundary. Therefore, the correct answer is "Denser to Rarer Medium."

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  • 8. 

    Solve for x and y : 3(2x+y) = 7xy, 3(x +3y) = 11xy

    • X=1 and y=3/2

    • X=0 and y=0

    • Both

    • None

    Correct Answer
    A. Both
    Explanation
    The given system of equations is 3(2x+y) = 7xy and 3(x +3y) = 11xy. By simplifying the equations, we get 6x + 3y = 7xy and 3x + 9y = 11xy. Rearranging the equations, we have 7xy - 6x - 3y = 0 and 11xy - 3x - 9y = 0. Factoring out common terms, we get x(7y-6) - y(3+11x) = 0 and -3x(3y+1) + 9y(11x-1) = 0. Setting each equation equal to zero, we can solve for x and y. The solutions are x=1 and y=3/2, which satisfy both equations. Therefore, the answer is both.

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  • 9. 

    Light Year is a mesuring unit of

    • Time

    • Speed

    • Distance

    • Energy

    Correct Answer
    A. Distance
    Explanation
    A light year is a unit of measurement used to describe astronomical distances. It is defined as the distance that light travels in one year in the vacuum of space. Since light travels at a constant speed, using light years as a unit allows us to easily express the vast distances between celestial objects. Therefore, the correct answer is distance.

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  • 10. 

    On putting few dops of liquid on a pH strip,the strip changes colour to green. The liquid is most probably-

    • Lemon Juice

    • Dilute HCl

    • NaOH Solution

    • Water

    Correct Answer
    A. Water
    Explanation
    When a few drops of liquid are put on a pH strip and it changes color to green, it indicates that the liquid is neutral or close to neutral on the pH scale. Water is known to have a neutral pH of 7, which is why it is the most probable answer in this case. Lemon juice is acidic, Dilute HCl is highly acidic, and NaOH solution is alkaline, so they would not cause the pH strip to turn green.

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  • 11. 

      If sina + cosa = 2 cos(90 −a ) , find cota .

    • 1.414

    • 0.414

    • 0

    • 1

    Correct Answer
    A. 0.414
    Explanation
    The given equation is sina + cosa = 2 cos(90 - a). We can rewrite this as sin(a) + cos(a) = 2 sin(a). Dividing both sides by sin(a), we get 1 + cos(a)/sin(a) = 2. Rearranging, we have cos(a)/sin(a) = 1. Subtracting 1 from both sides gives cos(a)/sin(a) - 1 = 0. Simplifying, we get (cos(a) - sin(a))/sin(a) = 0. This can be rewritten as cot(a) - 1 = 0. Adding 1 to both sides gives cot(a) = 1. Therefore, the value of cot(a) is 1.

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  • 12. 

    Isotones have, same no.of-

    • Protons

    • Electrons

    • Neutrons

    • Mass no.

    Correct Answer
    A. Neutrons
    Explanation
    Isotones are atoms that have the same number of neutrons. This means that they have different numbers of protons and electrons, as well as different mass numbers. The only similarity between isotones is the number of neutrons they possess.

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  • Current Version
  • Dec 12, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • May 20, 2011
    Quiz Created by
    Partik
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