alleryMatch the indicator test to its colour change
Read exercise and reference answers
- Matching pairs
- Left
- Blue litmus in acid
- Right
- Turns red
- Left
- Red litmus in base
- Right
- Turns blue
- Left
- Phenolphthalein in base
- Right
- Turns pink
Andhra Pradesh SSC (Class 10) Light and Sound — practice questions
Explore 14 free Light and Sound questions in Andhra Pradesh SSC (Class 10) Physics. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 1–14 of 14.
Match the indicator test to its colour changeRead 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 the indicator test to its colour changeRead the answer and worked solution →
Worked practice questions
Which of the following is used for dissolution of gold?
- Hydrochloric acid
- Aqua regia
- Sulphuric acid
- 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_
Sodium carbonate is a basic salt because it is a salt of
- strong acid and strong base
- weak acid and strong base
- weak acid and weak base
- strong acid and weak base
Show answer and solution
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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