Is Matter Around us Pure?
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Question 1 of 8
1. Question
Which of the following is/are correct for mixtures ?
1. Mixtures are constituted by more than one kind of pure form of matter.
2. Alloys are mixtures of two or more metals or a metal and a non-metal and cannot
be separated into their components by physical methods.CorrectIncorrect -
Question 2 of 8
2. Question
Which of the following is/are correct for solutions?
1. A solution is a heterogeneous mixture of two or more substances.
2. It can be solid solutions (alloys) and gaseous solutions (air).CorrectIncorrect -
Question 3 of 8
3. Question
Which of the following are correctly matched?
1. Solvent ———————————————————- dissolves the substance.
2. Solute —————————————————— component that is dissolved.
3. Tincture of iodine ——————————————- solution of iodine in water.CorrectIncorrect -
Question 4 of 8
4. Question
Which of the following is/are the characteristics of colloid?
1. A colloid is a heterogeneous mixture.
2. Colloids are big enough to scatter a beam of light.
3. The particles of a colloid can be seen by the naked eye.CorrectIncorrect -
Question 5 of 8
5. Question
Which of the following are correctly matched?
1. Dispersed phase —————————————————— dispersed particles.
2. Dispersion medium ———————————— dispersed phase is suspended.
3. Aerosol ———————————————————————————— fog.CorrectIncorrect -
Question 6 of 8
6. Question
Which of the following are correctly matched?
1. Coloured dye from black ink ————————————————evaporation.
2. Cream from milk —————————————————————– filtration.
3. Oil and water ———————————————————– separating funnel.CorrectIncorrect -
Question 7 of 8
7. Question
Which of the following is/are correct about elements?
1. Elements can be normally divided into metals, non-metals and metalloids.
2. Antoine Laurent Lavoisle was the first scientist to use the term ‘element’ in 1661.CorrectIncorrect -
Question 8 of 8
8. Question
Which of the following is/are correct for compounds?
1. It is a substance composed of two or more elements.
2. The composition of each new substance is always fixed.
3. It shows the properties of the constituent substances.
Which of the above statements are correct?CorrectIncorrect