Matter Test - 1...

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Three identical beakers I, II and III are taken and 20 mL water is poured in each beaker. Now, the beakers are heated at a temperature of 20°C, 30°C and 40°C respectively.

The increasing order of the rate of evaporation in the three beakers is

Which of the following matter has minimum space between its particles?

Which of the following matter has the highest compressibility?

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Pooja has three substances X, Y, Z. Her teacher asked her to label them as solid, liquid, and gas. She was told by her teacher that only Y and Z are easily compressible. Also, Y has definite volume but indefinite shape whereas Z neither has a definite shape nor a definite volume.

What are X, Y, and Z respectively?

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As the summer season started, Reena observed that her mother hung a bed sheet soaked in water at the door of their bedroom. She felt a cool air every time the wind blew through the wet bed sheet.

What would be the reason for Reena’s observation of cool air blowing from the wet bed sheet?

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A few crystals of potassium permanganate were added to 50 mL of water in a beaker. Within a few seconds, the crystals got dissolved in water and gave purple colour to the entire solution.

Which of the following statements is correct for the above observation?