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

User Forum

Ask Your Question
Labonyo Sen from Calcutta Girls High School, KOLKATA
Subject :NSO    Class : Class 8

If it is possible to make a meaningful word from the first, second, third, fifth and eighth letters of the word WORDLORE using each letter only once, third letter of the word would be your answer. If only two such words can be formed, your answer would be ‘M’. If more than two such words can be formed, your answer would be ‘N’. And if no such word can be formed your answer would be ‘X’.

A M
B N
C X
D W


What is the other word apart from 'lower'?

Ans 1:

Shreya Mahesh from Sri Sri Ravishankar Vidya Mandir, Bangalore
Class : Class 8
Rowler and Owler

Post Your Answer

ISHAAN ROY from NPS SINGAPORE, Singapore
Subject :NSO    Class : Class 3

Ans 1:

Ivan from Chirec, hyderabad
Class : Class 3

Ans 2:

PONMANIKANDAN PONRAJ from FAIPS, KUWAIT
Class : Class 3
C is the incorrect sentence because respiratory system is not used for providing oxygen to all parts of our body,it is used for only breathing.

Ans 3:

Ivan from Chirec, hyderabad
Class : Class 3

Ans 4:

Ivan from Chirec, hyderabad
Class : Class 3
I

Post Your Answer

Ali Hussain from Delhi Private School Dubai, Dubai
Subject :NSO    Class : Class 6

Match the column I with column II and choose the correct option from the codes given below:

Column I Column II
P. Digestion of food in our body (i) Fast change
Q. Earthquake (ii) Natural, desirable change
R. Falling of stone (iii) Natural, undesirable change
S. Change of seasons (iv) Slow change


A P - (iv), Q - (ii), R - (iii), S - (i)
B P - (iii), Q - (iv), R - (ii), S - (i)
C P - (ii), Q - (i), R - (iv), S - (iii)
D P - (iv), Q - (iii), R - (i), S - (ii)


Correct answer is D coming season is natural and desirable

Ans 1:

Kushal from Chirec, Hyderabad
Class : Class 7
the answer is d

Ans 2:

Agustya vaid from Somerville school vasundhara enclave, Delhi
Class : Class 7

Post Your Answer

Theertha sudeep from National academy for learning, Bengaluru
Subject :NSO    Class : Class 5

Select the correct statement out of the following.

A Sandy soil needs regular addition of fertilisers as it holds a large amount of water.
B Loamy soil has good qualities of both sandy and clayey soil and thus is most suitable for pottery.
C Clayey soil develops cracks in hot weather causing harm to the roots of plants, thus is not suited for agriculture.
D The water holding capacity is highest in clayey soil and lowest in loamy soil.


Loamy soil is a mixture of sand and clay , which is suitable for growing plants . So, option (B) is also correct

Ans 1:

Shruti Rajshree from NPS Indiranagar, Bengaluru
Class : Class 6
but as given in the options it says that loamy soil is perfect for pottery which is false . Thus the correct answer is option C.

Ans 2:

Ishaan Ahuja from TSMS, Noida
Class : Class 5
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Ans 3:

Vidyut from Lotus Valley, New Delhi
Class : Class 5
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Ans 4:

Devina kashyap from TPS, Mumbai
Class : Class 4
as loamy soil is a mixture of clayey and sandy soil, it holds the right amount of air and water both and it is best suitable for pottery. Thus both the answers B and C should be correct.

Ans 5:

AASTHA RAI from AUXILIUM SCHOOL, KOLKATA
Class : Class 6

Ans 6:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5

Ans 7:

Biju Pappachan from Rkc , Raipur
Class : Class 1
The correct answer is C although I did answer as B.I understood that the correct answer is the when I read the solution

Ans 8:

Shruti Rajshree from NPS Indiranagar, Bengaluru
Class : Class 6
but as given in the options it says that loamy soil is perfect for pottery which is false . Thus the correct answer is option C.

Post Your Answer

Surya from INDIAN SCHOOL JALAN OMAN, Alkamil oman
Subject :NSO    Class : Class 2

Ans 1:

ALICE from CENTRAL ACADEMY, UDAIPUR
Class : Class 1
correct answer should be D

Ans 2:

arnav basu from FAPS, Bangalore
Class : Class 3
answer should be D !!

Ans 3:

Darshil Rath from Sai International School , Bhubaneswar
Class : Class 4

Ans 4:

Arjun from chirec heydrabad, heydrabad
Class : Class 8
correct answer should be D

Ans 5:

Aryaman m from Podar international school bangalore, Bangalore
Class : Class 3
correct answer should be D

Ans 6:

MANIT from Lotus valley, Gurgaon
Class : Class 3
correct answer should be D here?

Ans 7:

Falaah Qidwai from DPS Noida, Noida
Class : Class 2
Answer is d

Ans 8:

AHAAN CHAUDHARY from DPS SEC 30 NOIDA, Noida
Class : Class 2
QUETION INCORRECT!!!

Ans 9:

Darshil Rath from Sai International School , Bhubaneswar
Class : Class 4
Correct Answer should be D

Ans 10:

Arjun from chirec heydrabad, heydrabad
Class : Class 8
Correct answer should be D

Ans 11:

Arjun from chirec heydrabad, heydrabad
Class : Class 8

Ans 12:

Nishtha maheshwari from Inventure Academy, Bengaluru
Class : Class 3
the correct answer should be D

Ans 13:

Arjun from chirec heydrabad, heydrabad
Class : Class 8

Post Your Answer

Shreyansh from St Xaviers School, Bokaro
Subject :NSO    Class : Class 7

During the science activity, Ms Prabha demonstrated an experiment in following steps:

Step 1 : She burned a substance X over the candle flame and white dazzling light was observed. Also white powdery ash was left behind.
Step 2 : She mixed the white ash formed with small amount of water. Then she dipped red and blue litmus papers into the solution one by one.

Which of the following observations are correct?
I. The substance burned in step 1 was magnesium.
II. The white ash formed in step 1 was magnesium oxide.
III. The solution formed in step 2 was acidic in nature
IV. The solution formed in step 2 turned blue litmus red.

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


I think the correct answer is a but the trainer is showing b

Ans 1:

SAMIT from JSS SMCS DHARWAD, DHARWAD
Class : Class 8
OPTION A

Post Your Answer

Manvi Mundepi from Montfort School Roorkee, Roorkee
Subject :NSO    Class : Class 6

Ans 1:

Shayan Bari from Kendriya Vidyalaya, Katihar
Class : Class 7
D is a flower but others are leaves.

Ans 2:

Shreyas V Poojary from Sri Sri Ravishankar Vidya Mandir , Bangalore
Class : Class 6

Ans 3:

Aditya Saha from The Lexicon International School Kalyaninagar Pune, Pune
Class : Class 7
B is reticulate Vention how ever all others are parrlel vinetion

Ans 4:

Shriya Sreekrishna from BLUEBELLS SCHOOL INTERNATIONAL, New Delhi
Class : Class 7

Post Your Answer

Manvi Mundepi from Montfort School Roorkee, Roorkee
Subject :NSO    Class : Class 6

Ans 1:

Ashher Pervez from DPS Bhilai, Bhilai
Class : Class 8
the answer is option c as the compass needle always points to south pole of a magnet.in this figure the compass needle is pointing towards the left hand side magnet's pole which means that pole's polarity is south and the pole of right hand side magnet is north. you should do a practical of this figure!

Ans 2:

Snigdha swaminath from Christ nagar higher secondary school , Trivandrum
Class : Class 7

Ans 3:

Daksh from RKC, Rajkot
Class : Class 6

Ans 4:

Anushka Wasnik from DPS, nagpur
Class : Class 6
Good

Post Your Answer

Manvi Mundepi from Montfort School Roorkee, Roorkee
Subject :NSO    Class : Class 6

Post Your Answer

Manvi Mundepi from Montfort School Roorkee, Roorkee
Subject :NSO    Class : Class 6

Post Your Answer