National Science Olympiad Forum By SOF Olympiad Trainer - Page 515

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Vikram from AVM, Mumbai

Subject :NSO Class : Class 5

On Earth, green plants are useful and needed by animals as they ____.
(i) Provide shelter
(ii) Are food producers
(iii) Produce oxygen
(iv) Produce carbon dioxide

A(i) & (iv)
B(i), (ii) & (iii)
C(ii), (iii) & (iv)
D(i), (ii), (iii) & (iv)

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Ans 1:

Kunj Tanna from lodha world school, thane

Class : Class 7

My answer is B

Ans 2:

stavya from dps noida, noida

Class : Class 8

bro i forgot about point number 2

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DEEPINDER SINGH from SAINT JOSEPH'S SCHOOL, BATHINDA, BATHINDA, PUNJAB

Subject :NSO Class : Class 6

Choose the Incorrect Statement(s) related to Electric Circuits. STATEMENT 1: All Metals are Conductors of Electricity. STATEMENT 2: Water is a conductor ,though Distilled Water is an Insulator. STATEMENT 3: The first cell was invented by Alessandro Volta. STATEMENT 4: The metal plates (Terminals) of a cell are stored in a chemical called Electrolyte. (A)Statement 1 and 2 (B)Statement 2 and 3 (C)Statement 1, 2 and 3 (D)All statements are Correct.

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Ans 1:

Preeti tanwar from DON BOSCO ACADEMY, Patna

Class : Class 9

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tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi

Subject :NSO Class : Class 9

Match Column-I with Column-II and select the correct option from the codes given below :

	a	b	c	d	e	f	g
A	I	IV	III	V	VII	II	VI
B	V	I	IV	III	II	VII	VI
C	I	IV	III	V	VII	VI	II
D	III	II	I	VII	V	IV	VI

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Ans 1:

from ,

Class : Class 10

Answer is option A

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tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi

Subject :NSO Class : Class 9

Read the given statements.
I. Bee wax obtained from beehive is a deposition of the excretory products of honeybee.
II. Fish culture is sometimes done in combination with rice crop
so that fish are grown in the water accumulated in the paddy field.
III. Fish feed in different zones of the pond in order
to make the most efficient use of the available food.
IV. Sahiwal and Murrah are exotic breeds used extensively in cattle farming.
V. Inter-cropping is growing two or more crops
simultaneously on the same field in a definite pattern.
Which of the given statements are incorrect?

AI, II and III
BII, III and IV
CI and IV
DI and V

x,dkytmy

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Ans 1:

tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi

Class : Class 4

lc7ytkyrtmj

Ans 2:

tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi

Class : Class 4

Ans 3:

Netha from SSM School, CHENNAI

Class : Class 9

OPTION C

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Bhabani Prasad from Narayan School, Kolkata

Subject :NSO Class : Class 6

The given graph shows the amount of water absorbed by four fabrics W, X, Y and Z of same size when put in four separate beakers containing equal amounts of water. Identify the fabrics and select the incorrect option regarding them.

AY could be obtained from an insect whereas Z could be obtained from a mammal.
BFibre of fabric W shrinks when burnt and melts into very hot bead that drips dangerously.
CFibres of fabric X are obtained without harming the source organism and can be repeatedly obtained from the same organism.
DFabric W is made up of synthetic fibres, X is composed of cellulosic fibres whereas Y and Z are made up of protein fibres.

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Ans 1:

Snigdha swaminath from Christ nagar higher secondary school , Trivandrum

Class : Class 7

B is the answer as it may have indicated man made fibre right

Ans 2:

A Andrew from Lalaji Memorial Omega International School, Chennai

Class : Class 5

option b) is the answer as it is synthetic fiber

Ans 3:

student from school, city

Class : Class 10

Ans 4:

Toothless from PSBB LLA, Bangalore

Class : Class 6

Ans 5:

Vihaan Tyagi from Vikas the concept, Hyderabad

Class : Class 10

The answer should be " b " not " a "

Ans 6:

Akshara from sishya OMR , chennai

Class : Class 8

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Nidhi Upadhyaya from S M shetty HIgh school, Mumbai

Subject :NSO Class : Class 5

If P is to the south of Q and R is to the east of Q, in what direction is P with respect to R?

A North-East
B North-West
C South-West
D North

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Ans 1:

Ansh singh from Dav model school, Durgapur

Class : Class 5

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Ans 2:

Ayush Yadav from Salwan Public School, Gurgaon

Class : Class 6

Ans 3:

Ronav Kerkar from Jamnabai Narsee School, Mumbai

Class : Class 7

IT SHOULD BE C

Ans 4:

Gayatri Iyer from Sanskriti School, Pune

Class : Class 9

It should be A!

Ans 5:

Shreetej from Pearson public school, Pune

Class : Class 5

ans=c

Ans 6:

yash kumar sinha from usha martin world school, patna

Class : Class 6

lol question

Ans 7:

Ronav Kerkar from Jamnabai Narsee School, Mumbai

Class : Class 7

should be A

Ans 8:

RISHABH from BHARATIYTA VIDYA BHAVAN, KOLKATA

Class : Class 10

should be a

Ans 9:

prarabdh thakur from podar international school, nashik

Class : Class 6

can't determine

Ans 10:

AREEN from BOLTON, HYDERABAD

Class : Class 6

Answer is C because think in the natural position. So P will be south-west to R.

Ans 11:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA

Class : Class 7

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AARNA Kapse from The swaminarayan school, Nagpur

Subject :NSO Class : Class 2

Which of these animals does NOT give birth to babies?

A

B

C

D

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Siddhant Chaturvedi from JPHS, JAIPUR

Subject :NSO Class : Class 1

At traffic signals, which colour means wait till the light is green ?

A
B
C
D

This question is a little confusing and traffic lights esp color yellow and orange are using varying, in Rajasthan we dont have yellow or blue lights. We have orange blinkers. CONFUSING.

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Saptak from Navy children school, Visakhapatnam

Subject :NSO Class : Class 7

Following sets of test tubes were made by a class VII science teacher.

She asked the students to find the incorrect statements about the given experimental set-ups.

ABlue litmus solution turns red in test tubes 1 and 3.
BTurmeric solution turns red in test tube 1.
CChina rose indicator turns dark pink in test tubes 2 and 4.
DPhenolphthalein remains colourless in test tubes 2 and 4.

is window cleaner an acid?

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Ans 1:

Shreya from DAV public school jamalpur, JAMALPUR

Class : Class 7

Ans 2:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR

Class : Class 10

HEy i do not know why but in the solution it is written that window cleaner is a aid.. This is wrong , as Window cleaner is ammonium hydroxide , which is a base.

Ans 3:

Siddharth from Navy Children School, KOCHI

Class : Class 4

ans is supposed to be c

Ans 4:

Nimisha Tambe from Narayana vidyalayam, Nagpur

Class : Class 8

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Akshat Pathak from DPS Sector 30, Noida

Subject :NSO Class : Class 3

Which of these is an INCORRECT match?

A
B
C
D

	a	b	c	d	e	f	g
A	I	IV	III	V	VII	II	VI
B	V	I	IV	III	II	VII	VI
C	I	IV	III	V	VII	VI	II
D	III	II	I	VII	V	IV	VI

	a	b	c	d	e	f	g
A	I	IV	III	V	VII	II	VI
B	V	I	IV	III	II	VII	VI
C	I	IV	III	V	VII	VI	II
D	III	II	I	VII	V	IV	VI

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	a	b	c	d	e	f	g
A	I	IV	III	V	VII	II	VI
B	V	I	IV	III	II	VII	VI
C	I	IV	III	V	VII	VI	II
D	III	II	I	VII	V	IV	VI