Methods of Separation in Everyday Life Class 6 Long Question Answer

Methods of Separation in Everyday Life Class 6 Long Question Answer

Methods of Separation in Everyday Life Class 6 Long Question Answer

Question 1.

Discuss ‘handpicking’ method of separation.

Answer:

This method of handpicking can be used for separating slightly larger sized impurities like pieces of dirt, stone and husk from wheat, rice or pulses.

The quantity of such impurities is usually very small.

In such situations, handpicking is a convenient method of separating substances. But, if impurities are smaller in size or larger in number, hand-picking becomes very difficult.

Question 2.

How does the process of winnowing help in separating heavier components from lighter components ?

Answer:

Winnowing is used to separate heavier and lighter components of a mixture by wind or by blowing air.

This method is commonly used by farmers to separate lighter husk particles from heavier seeds of grain.

The husk particles are carried away by the wind.

The seeds of grain get separated and form a heap near the platform for winnowing.

Question 3.

Describe the process of decantation and its applications in daily life.

Answer:

Decantation is the process of carefully pouring off a liquid from a mixture after allowing solids to settle at the bottom. This technique is commonly used in daily life, such as when separating clear liquid from sediment in homemade juice or when clarifying broth after cooking. It is also applied in laboratories for separating liquids from precipitates.

Question 4.

Describe the process and significance of winnowing in agriculture.

Answer:

Winnowing involves using air to separate lighter husk from heavier grains after harvesting. The process is significant as it improves the quality of the grains by removing unwanted materials, ensuring that only the edible parts are collected. This enhances the efficiency of grain storage and processing.

Question 5.

Explain the steps involved in the filtration process.

Answer:

The filtration process involves several steps : First, a mixture of solid and liquid is prepared. Next, a filter medium, such as filter paper, is placed in a funnel. The mixture is poured into the funnel, allowing the liquid to pass through while retaining solid particles. Finally, the clear liquid, known as the filtrate, is collected for further use.

Question 6.

What is the role of evaporation in the separation of mixtures?

Answer:

Evaporation plays a crucial role in separating mixtures by converting a liquid into vapor, leaving behind any dissolved solids. This method is widely used in various applications, such as obtaining salt from seawater, concentrating solutions in chemical processes, and in the food industry to create concentrated flavors.

Question 7.

Discuss the importance of sedimentation in water treatment processes.

Answer:

Sedimentation is vital in water treatment as it allows suspended solids to settle at the bottom of a tank, clarifying the water. This process reduces turbidity and prepares the water for further treatment, such as filtration and disinfection. Effective sedimentation improves the overall quality of drinking water.