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Kerala SSLC (Class 10) Light and Sound — practice questions

Explore 12 free Light and Sound questions in Kerala 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 1–12 of 12.

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 →

Worked practice questions

Which of the following is used for dissolution of gold?

  1. Hydrochloric acid
  2. Aqua regia
  3. Sulphuric acid
  4. Nitric acid
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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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Sodium carbonate is a basic salt because it is a salt of

  1. strong acid and strong base
  2. weak acid and strong base
  3. weak acid and weak base
  4. strong acid and weak base
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Correct answer: B. weak acid and strong base

This Acids, Bases and Salts item tests a core Chemistry concept. Correct answer: weak acid and strong base. _Source: syllabus Exemplar Science Class 10_

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Structural formula of ethyne is

  1. $\mathrm{H} - \mathrm{C} \equiv \mathrm{C} - \mathrm{H}$
  2. $\mathrm{H}_{3} - \mathrm{C} \equiv \mathrm{C} - \mathrm{H}$
  3. $\mathrm{H} - \mathrm{C} = \mathrm{C} - \mathrm{H} / \mathrm{H}$
  4. $\mathrm{H} - \mathrm{C} - \mathrm{C} - \mathrm{H} / \mathrm{H}$
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Correct answer: A. $\mathrm{H} - \mathrm{C} \equiv \mathrm{C} - \mathrm{H}$

This Carbon and its Compounds item tests a core Chemistry concept. Correct answer: $\mathrm{H} - \mathrm{C} \equiv \mathrm{C} - \mathrm{H}$. _Source: syllabus Exemplar Science Class 10_

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More Physics topics

CalorimetryRay Optics and Optical InstrumentsElectricity: Current and Household CircuitsLight and OpticsSound