National Science Olympiad Forum By SOF Olympiad Trainer - Page 412
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KRITHIGHA SHRI M P from KAMALA NIKETAN MONTESSORI SCHOOL, TRICHIRAPPALLI
Subject :NSO    Class : Class 7

Read the given statements and select the correct answer.
Statement 1 : It is not possible to photograph a virtual image.
Statement 2 : An image is said to be virtual if the reflected or refracted rays are diverging in nature.

A Both statement 1 and statement 2 are true and statement 2 is the correct explanation of statement 1.
B Both statement 1 and statement 2 are true but statement 2 is not the correct explanation.
C Statement 1 is true but statement 2 is false.
D Statement 1 is false but statement 2 is true.


The answer for this question is given wrong,the answer isYes. Any camera that's capable of photographing actual objects is also capable of photographing real and virtual images.

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SAIRAM from TRIVENI TALENT SCHOOL, HYDERBAD
Subject :NSO    Class : Class 8

Ans 1:

arnav from the gurukul, Panchkula
Class : Class 5
hyiuhiuhiuhiuohinjkhnjklnh

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Dibyanshu Lahiri from Mont Fort Sr Sec School, Roorkee
Subject :NSO    Class : Class 8

Ans 1:

Kashish Kathuria from Delhi Public School, Bangalore
Class : Class 9
1000

Ans 2:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9
kHz = 1000Hz

Ans 3:

AKSHAJ SRIVASTAVA from MOUNT LITERA ZEE SCHOOL, Kanpur
Class : Class 9
how many kHz = Hz

Ans 4:

Aryan Keswani from Delhi Public School, Mathura Road, New Delhi
Class : Class 10
Answer is A Because the question is "ABOVE THE AUDIBLE RANGE, not within"

Ans 5:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9
correct answer should be c

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Vatsala from DPS, Durg
Subject :NSO    Class : Class 5

Ans 1:

Divyanshi from United international School, Bangalore
Class : Class 6
none of the options are correct.

Ans 2:

Ritabrata Das from OPJS, Angul
Class : Class 7

Ans 3:

Riya Gupta from Birla Divya Jyoti, Siliguri
Class : Class 8
correct answer should be D

Ans 4:

DIPTANGSU PARBAT from SOUTH POINT HIGH SCHOOL, Kolkata
Class : Class 7

Ans 5:

SWAPNIL PAHARI from FUTURE CAMPUS SCHOOL, KOLKATA
Class : Class 8
the correct answer will be both option b and d

Ans 6:

AK from School, Gurgaon
Class : Class 6
D is correct

Ans 7:

Shaanvi from ,
Class : Class 5
Correct answer is D not B!

Ans 8:

sujata patel from Podar International, Pune
Class : Class 6
I DISCUSSED A LOT .SEARCHED ON GOOGLE. MALARIA IS A NON COMMUNICABLE DISEASE.PLEASE explain IT

Ans 9:

Kashvi Rawat from Gear Innovative International School, Bengaluru
Class : Class 3
D is the correct answer

Ans 10:

CHIRAG KHORIA from EVERGREEN PUBLIC SCHOOL, MAYNAGURI
Class : Class 5
no option is corect,it is d with the diseases interchanged

Ans 11:

Devrajan from Amity International School, Noida
Class : Class 8
Option D is the correct answer

Ans 12:

Samyuktha from Sri Chaitanya, Chennai
Class : Class 7
D is the correct answer

Ans 13:

AK from School, Gurgaon
Class : Class 6

Ans 14:

Pragun goel from Venkateshwar International School, Delhi
Class : Class 8
None of the options are correct

Ans 15:

VAIBHAV RAI from Cambridge Court High School, JAIPUR
Class : Class 8
no option is correct

Ans 16:

munish jindal from APJ school, Jalandhar
Class : Class 8

Ans 17:

SIDH DALMIA from GEMS MODERN ACADEMY, Dubai
Class : Class 5
NONE OF THE OPTIONS ARE CORRECT

Ans 18:

Kashvi Rawat from Gear Innovative International School, Bengaluru
Class : Class 3
none of the options are correct

Ans 19:

Mridul Jain from Shishukunj International School Indore, Indore
Class : Class 9
Pls explain

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Avantika Nair from The Study, Pondicherry
Subject :NSO    Class : Class 5

Ans 1:

Ritabrata Das from OPJS, Angul
Class : Class 7

Ans 2:

Arohan from DAV, Hyd
Class : Class 6

Ans 3:

Ameya from New Era, Vadodara
Class : Class 3
ok

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arjun from the bishops school camp , pune
Subject :NSO    Class : Class 6

Refer to the given paragraph and answer the following question.
Plant P is the only source of food for the caterpillars of a butterfly species, Q. Plant P depends on the adults of the butterfly species Q for pollination. Infact, animal Q is the only pollinator of plant P in nature. Animal R feeds exclusively on the caterpillars of the butterfly species, Q. Animal R in turn is the prey of animal S.
Which of the following is likely to happen if animal S is hunted to extinction?

A Animal R will continuously feed on animal Q which may lead to coextinction of both P and Q with time.
B The populations of both animals Q and R will increase, however the population of plant P will decrease with time.
C Population of animal R will increase while population of animal Q will decrease with time.
D Both (A) and (C)


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VANSH GARG from DPSG, GHAZIABAD
Subject :NSO    Class : Class 3

Ans 1:

Atri Pradhan from Oxebow English School, Gobardanga
Class : Class 3
If we in a soil sample, we would see small bubbles on the soil sample.

Ans 2:

FAIZA AMIN from SAINT XAINS INTERNATIONAL SCHOOL ANANTNAG, ANANTNAG
Class : Class 3
D

Ans 3:

VANSH GARG from DPSG, GHAZIABAD
Class : Class 4

Ans 4:

sujan from scholars world school, hassan
Class : Class 3
D)

Ans 5:

Atri Pradhan from Oxebow English School, Gobardanga
Class : Class 3
when we put some water in a soil surface, we cold see small bubbles on the soil surface.

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VANSH GARG from DPSG, GHAZIABAD
Subject :NSO    Class : Class 3

Ans 1:

divita saxena from bhavans vidya mandir ashti , nagpur
Class : Class 4
c as in a b d force pull is used

Ans 2:

Atri Pradhan from Oxebow English School, Gobardanga
Class : Class 3
Hitting the cricket ball with a bat to make a run.

Ans 3:

Karangat house from Navy Children School, Payyannur
Class : Class 3
c

Ans 4:

VANSH GARG from DPSG, GHAZIABAD
Class : Class 4

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Aaryav Tiwari from DPS VK, Delhi
Subject :NSO    Class : Class 6

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Aaryav Tiwari from DPS VK, Delhi
Subject :NSO    Class : Class 6

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