Matter In Our Surrounding 9th Class

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| By Chandra Sekhar
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Chandra Sekhar
Community Contributor
Quizzes Created: 1 | Total Attempts: 123
| Attempts: 128
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  • 1/7 Questions

    Density=

    • Mass/volume 
    • Weight/volume
    • Gravitational/volume
    • None of these 
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About This Quiz

This quiz is designed for 9th class students focusing on the properties of matter, covering topics like density, states of matter, and mixtures.

Matter In Our Surrounding 9th Class - Quiz

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  • 2. 

    Gases have highest rate of diffusion among all the three states of matter.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Gases have the highest rate of diffusion among all the three states of matter because their particles are in constant random motion and are far apart from each other. This allows them to spread out and mix with other gases more easily compared to liquids or solids. In liquids, the particles are closer together and in constant motion, but not as fast as in gases. Solids have the slowest rate of diffusion because their particles are tightly packed and have limited mobility. Therefore, the statement is true.

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  • 3. 

    ________metal is liquid at room temperature

    Correct Answer
    Mercury
    Explanation
    Mercury is a metal that is liquid at room temperature. Unlike most other metals, which are solid at room temperature, mercury has a low melting point of -38.83 degrees Celsius (-37.89 degrees Fahrenheit). This unique property is due to the weak metallic bonding between its atoms, allowing them to move more freely and giving mercury its liquid state.

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  • 4. 

    Convert 273 kelvin to celsius ________ approx.

    Correct Answer
    0
    Explanation
    To convert Kelvin to Celsius, we need to subtract 273 from the given value. In this case, 273 Kelvin minus 273 equals 0 Celsius. Therefore, the approximate Celsius value for 273 Kelvin is 0.

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  • 5. 

    Which one of the following are homogeneous mixture

    • Option 1

    • Option 2

    Correct Answer
    A. Option 1
    Explanation
    Option 1 is a homogeneous mixture because it consists of a single phase and its components are uniformly distributed throughout. This means that the composition of Option 1 is the same throughout the entire sample. In contrast, Option 2 may be a heterogeneous mixture because it could contain multiple phases and its components may not be evenly distributed. Therefore, Option 1 is the correct answer as it meets the criteria for a homogeneous mixture.

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  • 6. 

    Which of following has highest density

    • Water

    • Kerosene oil

    • Iron

    • Lead

    Correct Answer
    A. Lead
    Explanation
    Lead has the highest density among the given options. Density is defined as the mass of a substance per unit volume. Lead is a dense metal with a high atomic mass, which contributes to its high density. Water, kerosene oil, and iron have lower densities compared to lead.

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  • 7. 

    Density is measured in ________

    Correct Answer
    kg per cubic meter
    Explanation
    Density is a measure of how much mass is contained in a given volume. It is calculated by dividing the mass of an object by its volume. The unit for density is kilograms per cubic meter (kg/m³), which represents the amount of mass in kilograms that is present in each cubic meter of space. Therefore, the correct answer is kg per cubic meter.

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Quiz Review Timeline (Updated): May 10, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • May 10, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 07, 2020
    Quiz Created by
    Chandra Sekhar
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