National Science Olympiad Forum By SOF Olympiad Trainer

User Forum

Ask Your Question

Select Class:

NIRMAY JOSEPH from DON BOSCO PARK CIRCUS, Kolkata

Subject :NSO Class : Class 4

A dog is chasing a cat as shown here.

•The cat starts from 8 m and jumps 3 m every time.
•The dog starts from 5 m and jumps 5 m every time.
If they both start at the same time, in which jump will the dog overtake the cat?

A1
B2
C3
D 4

View All Answers (2)

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is B.

Ans 2:

Dhriti yamana from GEMS Modern Academy, Dubai

Class : Class 4

The answer is c

Submit Your Answers

Post Your Answer

NIRMAY JOSEPH from DON BOSCO PARK CIRCUS, Kolkata

Subject :NSO Class : Class 4

Which of the following metal tumblers will produce the loudest but pleasant sound when struck by a pencil on the sides?

A

B

C

D

View All Answers (2)

Ans 1:

from Podar International School icse, Aurangabad

Class : Class 6

Ans 2:

ishit from EUROSCHOOL THANE, THANE WEST

Class : Class 5

Can you tell the answer to this question

Submit Your Answers

Post Your Answer

Kavita G from sri chaitanya techno school, Bengaluru

Subject :NSO Class : Class 6

Choose the odd one out.
(a) 5162843
(b) 2234657
(c) 5211891
(d) 8092145

according to me only opt.D is divisible by 5 others are not. So, what is the answer?when I mark opt.D it says that it is wrong

View All Answers (1)

Ans 1:

Shaunak Mahapatra from Mount Litera Zee School, Contai

Class : Class 7

Here opt c is correct as if we add all the digits of the no.s in the opt a , b, and d the result is 29 where opt c gives the result 27. Thus, the odd one is the opt c.

Submit Your Answers

Post Your Answer

Nishant Doshi from new era senior secondary school nizampura vadodara, Vadodara

Subject :NSO Class : Class 5

If ‘+’ is called ‘ ÷ ’, ‘–’ is called ‘×’, ‘ ÷ ’ is called ‘+’ and ‘×’ is called ‘–’, then 36 × 12 + 4 ÷ 6 + 2 – 3 =?

A 2
B 18
C
D 42

Give explanation.

View All Answers (17)

Ans 1:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram

Class : Class 5

Everyone , pay attention . In this question , the BODMAS rule ( Bracket , Off , Division , Multiplication , Addition , Subtraction ) is used . Let me explain it . First transform all the signs . The ans . comes 36 - 12 -:- 4 6 -:- 2 x 3 . First we have to do division , then multiplication , then addition and then subtraction . Therefore :-36 - 12 -:- 4 6 -:- 2 x 3 \l/36 - 3 3 x 3 \l/ 36 - 3 9 \l/ 36 - 12 \l/ 24

Ans 2:

KOUSTUV JENA from RYAN INTERNATIONAL SCHOOL, RAIPUR

Class : Class 6

it is confusing ya

Ans 3:

SRISANTH from Edify, Tirupathi

Class : Class 5

The bodmas rule is sometimes not applicable in some cases and if we use both methods it will take about 8 minutes.I even tested it

Ans 4:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram

Class : Class 5

Ans 5:

PARUL GHARSE from Vibgyor, Mumbai

Class : Class 6

it is really confusing

Ans 6:

Anil sinha from DPS, Chandigarh

Class : Class 4

Ans 7:

Haroon T K from Silver Hills public school , Calicut

Class : Class 5

Ans 8:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram

Class : Class 5

Ans 9:

Dushyant Singh from Shri Ram Centennial School, Indore

Class : Class 5

Very confusing.

Ans 10:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram

Class : Class 5

Ans 11:

Irresh Vijay from NPSI Singapore, Singapore

Class : Class 6

Ans 12:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram

Class : Class 5

Ans 13:

CHEERANJIT MOHANTA from MATHOPE, BHUBANESWAR

Class : Class 5

how? can not understand.

Ans 14:

Sohan Choudhury from Delhi Public School Electronic City Bengaluru, Bengaluru

Class : Class 6

Ans 15:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram

Class : Class 5

I did not write the plus signs . It will be 4 6 , 3 3 and 3 9 .

Ans 16:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram

Class : Class 5

Ans 17:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA

Class : Class 6

very confusing

Submit Your Answers

Post Your Answer

Nishant Doshi from new era senior secondary school nizampura vadodara, Vadodara

Subject :NSO Class : Class 5

Select the correct option regarding natural resources.

A They can never be exhausted.
B They are obtained from soil only.
C Non-mineral resources include air and water.
D Some of the natural resources are harmful to us.

Give explanation

View All Answers (4)

Ans 1:

Kenisha Tamboli from Mansukhbhai Kothari National School, Pune

Class : Class 6

Ans 2:

Arnav kaul from Chirec, Hyderabad

Class : Class 5

Ans 3:

Ankita Dave from GNS, Bangalore

Class : Class 4

C is the answer to this question

Ans 4:

Shruthi from VIBGYOR, Mumbai

Class : Class 5

Submit Your Answers

Post Your Answer

j pranav from Dehli Public School Nacharam, Hyderabad

Subject :NSO Class : Class 7

If a body moves with uniform velocity, then

(A) Its initial velocity is zero

(B) Its final velocity is zero

(D) Its change in velocity is zero.

View All Answers (1)

Ans 1:

arijit paul from New Town School, Kolkata

Class : Class 9

I know this answer........................................its (C) Prove me if its wrong

Submit Your Answers

Post Your Answer

tanay Nasikkar from bgs nps, bangalore

Subject :NSO Class : Class 5

21 students are standing in a line. Deepak is in the middle. What is his position from left as well as from right?

A 12^th
B 10^th
C 11^th
D 9^th

View All Answers (7)

Ans 1:

Nishant Doshi from new era senior secondary school nizampura vadodara, Vadodara

Class : Class 7

Deepak is standing in line there are 21 students in line. So , he is one standing in middle so 21 - 1 = 20 . So 20 divide by 2= 10 . Thus , there are 10 students from right as well as left .

Ans 2:

Mahadevan from KV Rubber Board Kottayam, Kottayam

Class : Class 5

Ans 3:

Nishant Doshi from new era senior secondary school nizampura vadodara, Vadodara

Class : Class 7

Deepak is standing in line there are 21 students in line. So , he is one standing in middle so 21 - 1 = 20 . So 20 divide by 2= 10 . Thus , there are 10 students from right as well as left .