Secondary School Science Exam 2025
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Questions and Answers

What is formed when an obstacle is placed in front of a light source?

  • Penumbra
  • None of these
  • Shadow
  • Both (A) and (B) (correct)

    • The focal length of a plane mirror is-

    Infinity

    The power of a convex lens with a focal length of 1 m will be-

    1 D

    Which of the following lenses is called diverging lens?

    <p>Concave lens</p> Signup and view all the answers

    The speed of light in different media is-

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

    What is the SI unit of magnification Produced by a lens?

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

    Which of the following has the highest refractive index?

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

    A Converging lens forms-

    <p>A real or a virtual image</p> Signup and view all the answers

    Which phenomena is responsible for the blue colour of the sky?

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

    The primary colour of light is-

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

    Where are large numbers of light-sensitive cells present?

    <p>In Retina</p> Signup and view all the answers

    Which lens is used for the treatment of farsightedness?

    <p>Convex lens</p> Signup and view all the answers

    The persistence of vision for human eye is-

    <p>1/6 sec</p> Signup and view all the answers

    Which of the following units is equal to watt(W)?

    <p>J/sec</p> Signup and view all the answers

    1 kilowatt-hour is equal to-

    <p>1 unit</p> Signup and view all the answers

    The SI unit of electric power is -

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

    1 KWh is equal to-

    <p>3.6 × 10^6 J</p> Signup and view all the answers

    Who propounded the 'right hand thumb' rule?

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

    On which principle of electric current does an electric fuse work?

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

    To increase the value of resistance, resistors should be connected in-

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

    Which material is used for making the coil of an electric heater?

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

    Which among the following is responsible for global warming?

    <p>CO2</p> Signup and view all the answers

    Which among the following is a fossil fuel?

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

    The source of the huge energy emitted by the sun and other stars is-

    <p>Nuclear fusion</p> Signup and view all the answers

    What was the purpose of construction of the Tehri Dam?

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

    Which cell is used in toys?

    <p>Dry cell</p> Signup and view all the answers

    Which gas is liberated at the Cathode during electrolysis in water?

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

    Which statement is true regarding the reaction given below? ZnO + C → Zn + CO

    <p>Carbon is being reduced</p> Signup and view all the answers

    Which of the following gases is formed as a result of the reaction of Zinc and dilute hydrochloric acid?

    <p>H2</p> Signup and view all the answers

    Which of the following gases turns lime water milky?

    <p>CO2</p> Signup and view all the answers

    Which among the following is slaked lime?

    <p>Ca(OH)2</p> Signup and view all the answers

    Toothpaste is generally-

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

    Which acid is present in lemon?

    <p>Citric acid</p> Signup and view all the answers

    The pH value of milk of magnesia is-

    <p>8</p> Signup and view all the answers

    An ore of Zinc is-

    <p>Zinc blende</p> Signup and view all the answers

    Study Notes

    Secondary School Examination - 2025

    • Subject: Science (Compulsory)
    • Subject Code: 112
    • Total Questions: 110
    • Time: 2 hours and 45 minutes
    • Full Marks: 80

    Instructions for Candidates

    • Candidates must write their question booklet serial number (10 digits) on the OMR answer sheet.
    • Candidates should answer in their own words whenever possible.
    • Figure in the right hand margin indicate the marks allocated.
    • An extra 15 minutes is allotted for candidates to read the questions carefully.
    • The question booklet is divided into two sections: Section A and Section B.

    Section A - Objective Type Questions

    • Total Questions: 80
    • Questions to Answer: 40
    • Marks per Question: 1
    • Use blue/black ballpoint pen to mark answers on the OMR sheet.
    • Do not use correction fluid, blades, or other invalid materials.

    Section B - Short Answer Questions

    • Total Questions: 24
    • Division by Subject:
      • Physics: 8 questions
      • Chemistry: 8 Questions
      • Biology: 8 Questions
    • Questions to Answer per Subject: 4
    • Marks per Question: 2
    • This section also includes 6 long answer questions (2 each from Physics, Chemistry, and Biology)
    • Marks per Physics LAQ: 6
    • Marks per Chemistry LAQ: 5
    • Marks per Biology LAQ: 5
    • One question of each subject (Physics, Chemistry, Biology) is compulsory from the long answer questions

    General Instructions

    • Use of electronic appliances is strictly prohibited.

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    Secondary School Examination 2025 Science PDF

    Description

    Prepare for the 2025 Secondary School Science Examination with this comprehensive quiz. It features a mix of objective type and short answer questions, covering essential topics in physics, chemistry, and biology. Ensure you understand the format and scoring details to excel in your exam.

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