Class 9 Exam > Class 9 Questions > Which of the following statements is true?a)H...
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Which of the following statements is true?
- a)Homogeneous mixtures can have variable composition
- b)Homogeneous mixtures fixed composition
- c)Heterogeneous mixtures have fixed composition
- d)Salt solution is heterogeneous mixture
Correct answer is option 'A'. Can you explain this answer?
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Which of the following statements is true?a)Homogeneous mixtures can h...
Yes, homogenous mixture have a variable composition as the constituents are present in any ratio such as 1:2 or 1:3 etc
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Which of the following statements is true?a)Homogeneous mixtures can h...
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Which of the following statements is true?a)Homogeneous mixtures can h...
Homogeneous mixtures can have variable composition
A homogeneous mixture is a type of mixture in which the components are uniformly distributed throughout the mixture. This means that the composition of a homogeneous mixture is the same throughout, regardless of the sample size or location within the mixture.
Explanation:
Homogeneous mixtures:
- Homogeneous mixtures are also known as solutions.
- In a homogeneous mixture, the particles of the different substances are evenly distributed and cannot be visually distinguished.
- Examples of homogeneous mixtures include saltwater, sugar dissolved in water, and air.
Variable composition:
- The composition of a mixture refers to the relative amounts of the different substances that make up the mixture.
- In a homogeneous mixture, the composition can vary.
- The composition can be changed by adding more or less of one of the substances.
- For example, in a saltwater solution, the composition can be changed by adding more salt or more water.
- The ratio of salt to water can vary, resulting in different concentrations of the solution.
Contrary options:
- Option b) states that homogeneous mixtures have fixed composition, which is incorrect.
- Option c) states that heterogeneous mixtures have fixed composition, which is also incorrect.
- Option d) states that a salt solution is a heterogeneous mixture, which is incorrect. Salt dissolved in water forms a homogeneous mixture.
Conclusion:
The correct statement is option a) Homogeneous mixtures can have variable composition. This is because the composition of a homogeneous mixture can be changed by altering the amounts of the substances present, resulting in different concentrations of the mixture.
A homogeneous mixture is a type of mixture in which the components are uniformly distributed throughout the mixture. This means that the composition of a homogeneous mixture is the same throughout, regardless of the sample size or location within the mixture.
Explanation:
Homogeneous mixtures:
- Homogeneous mixtures are also known as solutions.
- In a homogeneous mixture, the particles of the different substances are evenly distributed and cannot be visually distinguished.
- Examples of homogeneous mixtures include saltwater, sugar dissolved in water, and air.
Variable composition:
- The composition of a mixture refers to the relative amounts of the different substances that make up the mixture.
- In a homogeneous mixture, the composition can vary.
- The composition can be changed by adding more or less of one of the substances.
- For example, in a saltwater solution, the composition can be changed by adding more salt or more water.
- The ratio of salt to water can vary, resulting in different concentrations of the solution.
Contrary options:
- Option b) states that homogeneous mixtures have fixed composition, which is incorrect.
- Option c) states that heterogeneous mixtures have fixed composition, which is also incorrect.
- Option d) states that a salt solution is a heterogeneous mixture, which is incorrect. Salt dissolved in water forms a homogeneous mixture.
Conclusion:
The correct statement is option a) Homogeneous mixtures can have variable composition. This is because the composition of a homogeneous mixture can be changed by altering the amounts of the substances present, resulting in different concentrations of the mixture.
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Which of the following statements is true?a)Homogeneous mixtures can have variable compositionb)Homogeneous mixtures fixed compositionc)Heterogeneous mixtures have fixed compositiond)Salt solution is heterogeneous mixtureCorrect answer is option 'A'. Can you explain this answer?
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