Question

(d) Method of separating and identifying various components in a mixture, which are present in
18. Read the following and answer any four questions from 18 (i) to 18 (v).
bob of the pendulum is at rest at 'O'. It is then displaced to one side at A. The height of 'A' above 'O' is
The following diagram shows that a simple pendulum consisting of a bob of mass 100 gm. Initially the
(d) For the separation of
(v) What is chromatography ?
(a) It is an agricultural method to separate grains
A method to separate magnetic impurities from non-magnetic impurities
& The process of separating the suspended particles of an insoluble substance
small trace quantities.
Study the given passage and answer the following questions.
18. Ma
5 cm. (Take g
10 m/s)
I
B
PE
P
5 cm
2 cm
Ito
A is corro
A, its
() What is the value of potential energy of bob at 'A' and where does it come from?
(a) 0.05)
(b) 0.5 J
(c) 0.0005 J
(d) 50 J
(ii) What is the value of total energy of the bob at position A?
(a) 1)
(b) 0.05 J
(c) 5)
(d) 50 J
(iii) What is the value of kinetic energy of the bob at mean position 'O'?
(a) 10 )
(b) 5 )
(c) 0.05 )
(d) 50.0 J
(iv) What is the value of kinetic energy and potential energy of the bob at the position 'P' whose heig
above O is 2 cm ?
(a) P.E. 0.2 J and K.E. = 0.3 J
(b) P.E. = 2.0 J and K.E. = 3.0 J
(c) P.E. = 0.002 J and K.E. = 0.003 J
(d) P.E. = 0.02 J and K.E. = 0.03 J
(v) What is kinetic energy?
(a) Energy acquired due to motion
(b) Energy acquired due to rest​

Answer 1

Answer:

All the chapter wise questions with solutions to help you to revise the ... Question 1: ... Which of the following methods of separation would be most appropriate for her ... (c) Churning (d) Winnowing Solution: (c) Churning is the method by which ... is used to separate heavier and lighter components of a mixture by wind or by ...

Explanation:Apr 12, 2019 — NCERT Exemplar Class 6 Science Solutions Chapter 5 Separation of Substances ... Which of the following methods of separation would be most ... Solution: (d) : Fland picking is the best method for separating the ... there is difference in weight of the two components one being lighter and ... Question 18.