(iv) Which method is used to separate pebbles and stones from sand?
(a) Handpicking
(b) Winnowing
(c) Sieving
(d) Any of these
Answers
Answer:
sieving
Explanation:
A mixture of sand, pebbles, and stones can be separated by the process of sieving. Fine sand particles pass through the holes of the sieve, while bigger impurities such as stones and gravel remain on the sieve.
Answer:
Sieving is used to separate pebbles and stones from sand.
Explanation:
What is sieving?
- Sieving is also known as size separation, sifting, classifying, or screening.
- It is the process by which a mass of powder containing particles of various sizes is distributed into masses of uniform particle size based on physical attributes such as size, shape, and, density.
For sieving, a mass of material is poured down into a container which is perforated (sieves). The perforations on a single container are uniform throughout the sieves and the pore diameter is a standard attribute.
When a mixture of sand, pebbles, and, stones are poured down in such sieves, and the sieves are shaken either manually or mechanically, then the sand particles which can pass through that pores fall down below whereas the pebbles and stones remain in the sieves.
The pore diameter can be changed to obtain sand of different particle sizes, such as coarse, fine, etc.
You can learn more about sieving by referring to the links below:
What is the basis of using sieving as a method of separation?
https://brainly.in/question/19057658
The aggregate should be oven dried before sieving. Justify.
https://brainly.in/question/11646673
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