National Science Olympiad Forum By SOF Olympiad Trainer

Suvid Singhal from Salwan Public School, Gurgaon

Subject :NSO Class : Class 7

Group of neutral substances is

(A) Common salt solution, mustard oil, oxygen, carbon dioxide

(B) Sugar solution, apple juice, oxygen, nitrogen

(C) Glucose solution, kerosene, petrol, oxygen

(D) Salt solution, mustard oil, lime water, nitrogen

Ans 1:

Nakul from NK Bagrodia Public School, Delhi

Class : Class 7

Wrong ques ans its 'A'

Ans 2:

Dhruvan G from Indian School Al Ghubra, Muscat

Class : Class 8

It's (A) as I have done a similar question like this.

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Utkarsh gupta from delhi public school, mumbai

Subject :NSO Class : Class 10

Find the missing term if same rute is followed in all the tree figures.

A 69
B 49
C 38
D 37

there is a another method :-45 29-39 43 27-33=7243 29-42 44 30-31=73we will add the largest and the smallest no. and then subtract the intermidiate one .so in the last sequence :-40 20-10 59 39 -79=4949 can also be the answewr

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drilyasali555@yahoo.co.in from rao,s my techno school, karimnager

Subject :NSO Class : Class 6

Which of the following statements is/are incorrect?
(i) Fats deposited in our body act as shock absorbers and protect us from injury.
(ii) Kwashiorkor is caused by deficiency of protein, carbohydrate and fat.
(iii) Roughage neither releases energy nor helps in tissue or body building.
(iv) Starch containing food item turns bluish black in colour on undergoing iodine test.

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

View All Answers (10)

Ans 1:

Smita De from Bishop Cotton Girls School, BANGALORE

Class : Class 6

answer 3 is correct

Ans 2:

UMA Subramanian from Global Indian International School, Singapore

Class : Class 7

Ans 3:

malhar thorve from city internqtional school, satara road, pune

Class : Class 7

Ans 4:

Vedang Amonkar from Dr K B Hedgewar High School, Panaji

Class : Class 6

Ans 3 is correct

Ans 5:

Shriyann from Suniti Devi Singhania School, Thane

Class : Class 9

Ans 6:

Shuvangi Das from Vivekananda mission school, haldia

Class : Class 9

Ans 7:

from , Dhule

Class : Class 7

d is the correct answer

Ans 8:

SOUMYA SHAMBHAVI JHA from PODAR INTERNATIONAL SCHOOL, MUMBAI

Class : Class 6

Thank you Pradyumna. It helped a lot

Ans 9:

Ronav Kerkar from Jamnabai Narsee School, Mumbai

Class : Class 7

i think d as starch does turn bluish black after undergoing iodine test

Ans 10:

EKLAVYA GONDULE from DPS BHILAI, Bhilai

Class : Class 7

The fats also protect the inner organs just like the airbags, protecting these vital parts from the sudden shocks. Hence, the plumper people have lesser chances of internal injuries in case of car crash or other accidents.

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Omayr from Army Public School Yol Cantt, Dharamshala

Subject :NSO Class : Class 8

Which of the following functions is not performed by the organic components of soil?

AIncreasing the moisture content of soil
BDecomposing slowly to produce nutrients
CProviding a strong base for plants to grow on
DActing as buffer and maintaining the pH level of soil

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is C.

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Omayr from Army Public School Yol Cantt, Dharamshala

Subject :NSO Class : Class 8

Which one of the following events is most likely to happen if a hedgerow is cleared for building a new house?

AThe wildlife in the hedgerow will continue to thrive in the garden.
BThere will be no effect on the animals living in the hedgerow as they will move elsewhere.
CThere will be more space for birds to build their nests.
DThe bird population will decrease as their nests are destroyed.

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is D.

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Ishaan Roy from Sri Chaitanya Techno School, Bengaluru

Subject :NSO Class : Class 6

Following are the properties of four minerals P, Q, R and S. Identify them and select the correct option.
P : It is required for proper functioning of thyroid gland.
Q : It helps in maintaining body’s water balance.
R : It is important for haemoglobin formation.
S : It strengthens bones and teeth and helps in blood clotting.

A Deficiency of P causes dryness of eyes and inflammation of tongue.
B Q is also required for the proper functioning of nervous system.
C Deficiency of R causes goitre.
D S also helps to fight infections and keeps skin and mouth healthy.

View All Answers (6)

Ans 1:

Aadvik saini from Mvn sector 17, Faridabad

Class : Class 8

Ans 2:

Aniketh Maniya Hebbar from TSA, Bangalore

Class : Class 5

Ans 3:

Vedang Amonkar from Dr K B Hedgewar High School, Panaji

Class : Class 6

Ans 4:

Ashwika Saraf from Bal Bharati Public School, Kharghar

Class : Class 5

Ans 5:

Aadvik saini from Mvn sector 17, Faridabad

Class : Class 8

Ans 6:

Abhinav Nakka from Timpany school, Visakhapatnam

Class : Class 6

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Krisheiv Datta from Army Public School, Kolkata

Subject :NSO Class : Class 4

Read the given passage and select the option which fills blanks correctly. Many people wear particular dress called uniform. wears white coat. Ironing of clothes after washing . clothes should be dry cleaned. Insects eat up woollen clothes, so they should be stored with .
                  1                     2                          3                      4

A Doctor          Removes dust          Cotton          Moth balls
B Lawyer         Kills germs              Silk               Silver fish
C Doctor          Kills germs              Woollen        Neem leaves
D Teacher        Removes sweat        Jute               Neem leaves

could anyone help me?

View All Answers (2)

Ans 1:

Saanvi Sharma from Harvest International , Bangalore

Class : Class 5

c , is the answer

Ans 2: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The correct answer is C.

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Mannat Verma from Vivek High School , Chandigarh

Subject :NSO Class : Class 4

Four scientists are trying to determine which of the four beakers of water is coldest. Each choice below shows what each scientist said. Which comment gives the best start in finding this answer?

AOne of these feels the coldest to me
BWhich one do you think is the coldest?
CWhat is the freezing point of water?
DIs there any way we can measure the temperature of the water in each beaker?

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Ans 1:

Mannat Verma from Vivek High School , Chandigarh

Class : Class 6

Sir, Can you help me? (Admin, Revisewise)

Ans 2:

Aaryaman Pradhan from De paul School , Berhampur

Class : Class 5

a

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ekta singhal from TSVS, Bhopal

Subject :NSO Class : Class 4

Priya is older than Manish. Yash and Teenu is of the same age. Anita is younger than Prerna. Manish is older than Yash. Prerna is younger than Teenu. Who is the oldest?

A Anita
B Priya
C Yash
D Manish

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Ans 1:

ikshika kumar from MVN SCHOOL, FARIDABAD

Class : Class 7

B) Priya

Ans 2:

ikshika kumar from MVN SCHOOL, FARIDABAD

Class : Class 7

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Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad

Subject :NSO Class : Class 6

Which of the following adaptations are shown by given plant?

(i)    Hollow stems and poorly developed roots.
(ii)   Branches are cone-shaped and slanting.
(iii) Large and flat floating leaves with waxy upper surface.
(iv) Stem performs photosynthesis.
(v) Succulent and swollen stems to store water.

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

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