National Science Olympiad Forum By SOF Olympiad Trainer - Page 683
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Garima shokeen from N K Bagrodia Public School, New Delhi
Subject :NSO    Class : Class 9

Ans 1:

Shalin Jain from NKDAV Sidheegram, Sidheegram
Class : Class 9
Option D

Post Your Answer

Garima shokeen from N K Bagrodia Public School, New Delhi
Subject :NSO    Class : Class 9

Refer to the given key and answer the following questions.
(i) Membrane with definite pores - P
(ii) Inner membrane with stalked particles - Q
(iii) Inner membrane connected into stacks like structures - R
(iv) Sac like organelle containing hydrolytic enzymes - S
(v) Membraneless organelle composed of one large and one small subunit. - T Select the option that correctly identifies any of these organelles.

A P - Nucleus, Q - Mitochondrion, S - Ribosome
B Q - Chloroplast, R - Mitochondrion, T - Ribosome
C R - Chloroplast, S - Lysosome, T - Ribosome
D P - Nucleus, Q - Chloroplast, R - Mitochondrion


Ans 1:

Shrestha Dutta from Julien Day School, KALYANI
Class : Class 10
opt c is correct

Ans 2:

SAKSHI KOTHARI from NAVRACHNA SCHOOL SAMA, Vadodara
Class : Class 7
a

Ans 3:

Shalin Jain from NKDAV Sidheegram, Sidheegram
Class : Class 9
Option A

Post Your Answer

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:

Atul Sanjeev from Indian School Al Ghubra, Muscat
Class : Class 9
What is centrifugation

Ans 2:

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 3:

Srinwanti from Ekya, bangalore
Class : Class 8

Ans 4:

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

Ans 5:

Anika Saha from New Town School, KOLKATA
Class : Class 6
the answer is A.

Post Your Answer

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

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Yes , the answer is C .

Ans 2:

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 3:

nandini from father agnel school, Noida
Class : Class 7
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

Ans 4:

nandini from father agnel school, Noida
Class : Class 7
option c is opposite like all the letters in the figure

Ans 5:

Ashwak from Cambridge, Jalandhar
Class : Class 9

Ans 6:

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

Post Your Answer

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

Post Your Answer

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.

Post Your Answer

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

Post Your Answer

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

Ans 1:

Souraj Saigovindh from Sri chaitanya Techno school, Tirupur
Class : Class 6
I need help on how to arrive this answer, please share the details

Post Your Answer

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

Post Your Answer

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)

Post Your Answer