EASY
Earn 100

Which of the following is/are not chemical Change(s)?

50% studentsanswered this correctly

Important Questions on Matter in our Surroundings

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Science>Chemistry>Matter in our Surroundings>Interconversion of Matter
If a gas expands at constant temperature it indicates that
MEDIUM
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Which of the following curves best represents the variation in density of water with temperature?
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Which gas boils out first during fractional distillation of air.
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Science>Chemistry>Matter in our Surroundings>Interconversion of Matter

When does ice melt at the same temperature 0°C(273 Kelvin), which one of the following has more energy?

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"Complete melting of ice cream will not happen suddenly". Explain.
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Science>Chemistry>Matter in our Surroundings>Interconversion of Matter
The melting point of ice is _____.
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Science>Chemistry>Matter in our Surroundings>Interconversion of Matter
Useful substance in preparation of freezing mixture is 
HARD
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The melting point of naphthalene is 80°C and the room temperature is 30°C. A sample of liquid naphthalene at 100°C is cooled down to the room temperature. Draw a temperature time graph to represent this cooling. In the graph, mark the region which corresponds to the freezing process.
EASY
Science>Chemistry>Matter in our Surroundings>Interconversion of Matter
Physical state of water at 0°C is
HARD
Science>Chemistry>Matter in our Surroundings>Interconversion of Matter
In which of the following conditions, the distance between the molecules of H2 gas would increase?
i. Adding more H2 gas to the container without increasing the volume of the container
ii. Increasing the volume of the container of H2 gas
iii. Some H2 gas leaking out of the container
iv. Increasing pressure on H2 gas contained in a closed container
MEDIUM
Science>Chemistry>Matter in our Surroundings>Interconversion of Matter
Why do solids have a fixed volume and a definite shape?
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Science>Chemistry>Matter in our Surroundings>Interconversion of Matter
Which of the following are the characteristics of a gaseous state?
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Science>Chemistry>Matter in our Surroundings>Interconversion of Matter
The particles in a solid diffuse into one another.
MEDIUM
Science>Chemistry>Matter in our Surroundings>Interconversion of Matter

What is meant by change of state?

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Science>Chemistry>Matter in our Surroundings>Interconversion of Matter
Why is it that gases are more compressible than liquids?
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Science>Chemistry>Matter in our Surroundings>Interconversion of Matter

Which of the following is not an example of solid?

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Science>Chemistry>Matter in our Surroundings>Interconversion of Matter

Why is it that the gases can be compressed easily but not the solids?

MEDIUM
Science>Chemistry>Matter in our Surroundings>Interconversion of Matter
In which of the following conditions, the distance between the molecules of hydrogen gas would increase?

I - Increasing pressure on hydrogen contained in a closed container

II - Some hydrogen gas leaking out of the container

III - Increasing the volume of the container of hydrogen gas

IV - Adding more hydrogen gas to the container without increasing the volume of the container.
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Science>Chemistry>Matter in our Surroundings>Interconversion of Matter
Which of the following is a property of solid?
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Science>Chemistry>Matter in our Surroundings>Interconversion of Matter

The property to flow is unique to fluids. Which of the following statements is correct?