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Tamil Nadu SSLC (Class 10) Light and Sound — practice questions

Explore 18 free Light and Sound questions in Tamil Nadu SSLC (Class 10) Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Light and Sound questions and exercises with answers

Showing questions 1–18 of 18.

Match each carbon term to its meaningRead the answer and worked solution →Which one does NOT belong?Read the answer and worked solution →Which of the following is used for dissolution of gold?Read the answer and worked solution →Sodium carbonate is a basic salt because it is a salt ofRead the answer and worked solution →Structural formula of ethyne isRead the answer and worked solution →Vinegar is a solution ofRead the answer and worked solution →Buckminsterfullerene is an allotropic form ofRead the answer and worked solution →Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example ofRead the answer and worked solution →Soap molecules in water form micelles because:Read the answer and worked solution →Which alkane is added to LPG to make it detectable through smell?Read the answer and worked solution →Identify the unsaturated compounds from the following (i) Propane (ii) Propene (iii) Propyne (iv) ChloropropaneRead the answer and worked solution →Chlorine reacts with saturated hydrocarbons at room temperature in theRead the answer and worked solution →How many isomers exist for the molecular formula C4H10?Read the answer and worked solution →The correct electron dot structure of a water molecule isRead the answer and worked solution →Match each carbon term to its meaningRead the answer and worked solution →Which one does NOT belong?Read the answer and worked solution →Key in the carbon numberRead the answer and worked solution →Saturated, unsaturated or neither?Read the answer and worked solution →

Worked practice questions

Match each carbon term to its meaning

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Matching pairs
  1. Left
    Catenation
    Right
    Carbon bonding to other carbon atoms
  2. Left
    Tetravalency
    Right
    Carbon having four valence electrons
  3. Left
    Covalent bond
    Right
    A bond made by sharing an electron pair
Instructions
Tap a term on the left, then tap what it means.
_Source: syllabus Science Ch4 Carbon and its Compounds, 4.1 BONDING IN CARBON_

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Which one does NOT belong?

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Questions
  1. Items
    1. Methane
    2. Ethane
    3. Ethene
    4. Propane
    Reason
    Ethene has a double bond, so it is an alkene. The other three are alkanes with single bonds only.
    Odd item
    Ethene
  2. Items
    1. Alkanes
    2. Alkenes
    3. Alkynes
    4. Alcohols
    Reason
    Alcohols contain oxygen. Alkanes, alkenes and alkynes are all hydrocarbons, made of carbon and hydrogen only.
    Odd item
    Alcohols
  3. Items
    1. C2H5OH
    2. CH4
    3. C2H6
    4. C3H8
    Reason
    Ethanol carries an oxygen atom, so it is not a hydrocarbon. The rest are alkanes.
    Odd item
    C2H5OH
Instructions
Tap the item that does not belong with the rest.
_Source: syllabus Science Ch4 Carbon and its Compounds, 4.1 BONDING IN CARBON_

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Which of the following is used for dissolution of gold?

  1. Hydrochloric acid
  2. Aqua regia
  3. Sulphuric acid
  4. Nitric acid
Show answer and solution

Correct answer: B. Aqua regia

This Acids, Bases and Salts item tests a core Chemistry concept. Correct answer: Aqua regia. _Source: syllabus Exemplar Science Class 10_

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