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Vivek Gulavani from Innisfree House School, Bengaluru
Subject :NSO    Class : Class 7

Read the given data and select the correct option for the following questions.
Raman carried out an experiment to find out how fast water can pass through four different types of soil. He put each type of soil in four pots with equal sized holes at the base and placed separate dishes at their bottom to collect water. He poured water in them one by one, and used a stopwatch to record the time taken for water to reach the level he had marked same in each dish. His recording is given in the table as shown below.

What factors should Raman keep the same to ensure a fair test?
(i) The amount of soil
(ii) The size of the pot
(iii) The shape of the dish
(iv) The amount of water

A (iii) and (iv) only
B (i) and (ii) only
C (ii), (iii) and (iv) only
D (i), (ii), (iii) and (iv)


How can it be a fair test if the amount of water varies

Ans 1:

Dhairya Vinayak from Loyola High School, Patna
Class : Class 8

Ans 2:

Saksham Chanani from Sri Sri Academy, Kolkata
Class : Class 9
D

Ans 3:

Aditya Sai Vemparala from Amanora school, Pune
Class : Class 10
The amount of water also matters right

Ans 4:

Kamal Manchenella from Delhi Public School, Hyderabad
Class : Class 7
I feel that it is D

Ans 5:

Medha Bijjaram from Prime Academy, Mumbai
Class : Class 9
I think D is the correct answer

Ans 6:

Shreyans Mondal from GD Goenka Public School Dakshineswar, Kolkata
Class : Class 8

Ans 7:

Shubham Ashish Kulkarni from APEEJAY PITAMPURA, DELHI
Class : Class 8
shape of dish also should be included. Amount of water poured doesnt matter as long as you are collecting equal volume in all dishes. Hence similar dishes is important.

Ans 8:

shreya from GIIS, KualaLumpur
Class : Class 5

Ans 9:

Adhrit from CHSV, Chennai
Class : Class 8
Definitely D

Ans 10:

Riyan Nayak from DPS Newtown, Kolkat
Class : Class 7
c should be the correct answer

Ans 11:

Palash sachin patel from Kips, Patan
Class : Class 8
d is correct answer

Ans 12:

Anuraaj Salunkhe from St Gregorios High School, Mumbai
Class : Class 10

Ans 13:

Shriyans from DPS Agra, Agra
Class : Class 8
D

Ans 14:

Akshay Jha from DPS NERUL, Navi Mumbai
Class : Class 7
D, amount of water matters the most out of all.

Ans 15:

ALICE from Delhi Public School, UDAIPUR
Class : Class 8

Ans 16:

Shreya Sudarshan from RVK - Banashankari, Bengaluru
Class : Class 7
All the given factors are required for a fair test ; So option D would be the correct answer

Ans 17:

Rithvik from BVM Global, Chennai
Class : Class 8
d

Ans 18:

aditya ranjan from gyan niketan , patna
Class : Class 7
i think amount of water also nedd

Ans 19:

Himanish Basu from Army Public School Kamaraj Road, Bangalore
Class : Class 7

Ans 20:

Aanya from DAV, Gurgaon
Class : Class 8
Option D is the correct answer

Ans 21:

Agastya Tripathi from dps gurgaon, Gurgaon
Class : Class 4
Water is also correct

Ans 22:

Tanmayi kiran giri from airforce force public school Vayusena Nagar, Nagpur, nagpur
Class : Class 9
I do agree it's D

Ans 23:

Mehaan Bhatt from Pawar Public School , Mumbai
Class : Class 6

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