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AKSHITA DIXIT from R K SARDA VIDYA MANDIR, RAIPUR
Subject :NSO    Class : Class 6

A few statements about centrifugation method are given :
I. The mixture containing very small suspended particles is rotated at a high speed in a centrifuge machine.
II. The denser particles stay at the top.
III. The method is used to separate water from wet clothes in a washing machine.
IV. The method can be used in laboratories for separating plasma and platelets.
The correct statements are

A I and IV only
B I, II and III only
C II, III and IV only
D I, III and IV only


Ans 1:

SOUMYA SHAMBHAVI JHA from PODAR INTERNATIONAL SCHOOL, MUMBAI
Class : Class 6
centrifugation is a process in which a substance is spun at a very high speed to separate minute particles. For eg. Blood is spun at a high speed to separate particles such as red and white blood cells, plasma platelets, and plasma.

Ans 2:

Advait talnikar from Dhruv Global School, Sangamner
Class : Class 6
The answer is A

Ans 3:

ATUL SANJEEV from Indian school Ghubra, Muscat
Class : Class 6
What is centrifugation

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Shridhar from G G International school, Pune
Subject :NSO    Class : Class 3

Ans 1:

Harry Potter from Le Setea , Paris
Class : Class 6
Yes , the answer is C .

Ans 2:

Punita Ghosh from Billabong High International School, mumbai
Class : Class 5
c as it is facing opposite side

Ans 3:

SARTHAK.SHUKLA from Delhi Public School, Noida, Noida
Class : Class 3
The question has all mirror images...... So answer has to be a mirror image.

Ans 4:

Harry Potter from Le Setea , Paris
Class : Class 6

Ans 5:

nandini from father agnel school, Noida
Class : Class 5
option c is opposite like all the letters in the figure

Ans 6:

nandini from father agnel school, Noida
Class : Class 5
becase in the figure all the letters seem to be in the opposite direction while options a b and d are not showing them in th opposite direction and option c is showing

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Ayush from Dps, Bengaluru
Subject :NSO    Class : Class 3

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RUDRA.JIN   DAL from DPS noida, Noida
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is D.

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Gurkirat kaur from little flower SR. SEC. School, delhi
Subject :NSO    Class : Class 7

Ans 1:

dhruv from Sri Aurobindo Memorial School, Bengaluru
Class : Class 9
cutaneous respiration

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Champ from Reliance Foundation School, Mumbai
Subject :NSO    Class : Class 6

Ans 1:

Kavinkrishnan from Sri Chaitanya school, Tirupur
Class : Class 7
I need help on how to arrive this answer, please share the details

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robinbijo from Sri Sankara Senior Secondary High School, Chennai
Subject :NSO    Class : Class 6

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AKSHITA DIXIT from R K SARDA VIDYA MANDIR, RAIPUR
Subject :NSO    Class : Class 6

Ans 1:

Rishit Verma from CMR NPS, Bengaluru
Class : Class 6
Answer is (c)

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AKSHITA DIXIT from R K SARDA VIDYA MANDIR, RAIPUR
Subject :NSO    Class : Class 6

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AKSHITA DIXIT from R K SARDA VIDYA MANDIR, RAIPUR
Subject :NSO    Class : Class 6

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