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Akshara from sishya OMR , chennai
Subject :NSO    Class : Class 6

Refer to the given dichotomous key.


ADeficiency of P causes a disorder called anaemia which can also be caused by deficiency of a vitamin known as B12.
BOur body is capable of manufacturing Q so we need not supplement it externally through our diet.
CDeficiency of R causes beriberi in children and pellagra in adults.
DS also helps in building resistance against infection in children and is found abundantly in citrus fruits.


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

Read the given statements and select the correct option.
(i) In insects, circulating body fluids serve to distribute oxygen to tissues.
(ii) Yeasts respire aerobically, therefore, they are used to make wine and beer.
(iii) Bronchitis is the inflammation of bronchi which may be caused on exposure to air pollutants.
(iv) In a healthy person, maximum capacity of lungs for inhaled air is 1500 mL.
(v) Sneezing expels the foreign particles from the inhaled air.

A Statements (i), (ii) and (iv) are incorrect, while statements (iii) and (v) are correct.
B Statements (i), (ii) and (iii) are incorrect, while statements (iv) and (v) are correct.
C Statement (ii) is incorrect, while statements (i), (iii), (iv) and (v) are correct.
D Statements (ii) and (v) are incorrect, while statements (i), (iii) and (iv) are correct.


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

Read the following statements and select the correct option.
Statement 1 : Yeast is single-celled organisms which is used in baking and brewing industry.
Statement 2 : Yeast carry out anaerobic respiration, i.e., fermentation and release, ethyl alcohol and carbon dioxide.

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


Ans 1:

Midhuna from ABCD, Banglore
Class : Class 3

Ans 2:

Ashvik Banerjee from Mount Litera Zee School , Vasco
Class : Class 9
Actually, both statements are not related. So I think the answer should be option b)

Ans 3:

Priyansh from Dikshant International school haldwani, haldwani
Class : Class 7

Ans 4:

Midhuna from ABCD, Banglore
Class : Class 3

Ans 5:

Vihaan Tandon from Dps agra, Agra
Class : Class 7
it should be (b)

Ans 6:

Arghya Kashyap from Modern Delhi Public School, Faridabad
Class : Class 7
It should be B

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

Read the given passage and select the correct option for (i) - (iii).

(i) are present in the chest cavity. This cavity is surrounded by (ii) on the sides which form a cage like structure. A large muscular sheet called (iii) forms the floor of the chest cavity.

A (i)-Lungs; (ii)-Ribs; (iii)-Diaphragm
B (i)-Diaphragm; (ii)-Ribs; (iii)-Lungs
C (i)-Bronchi; (ii)-Ribs; (iii)-Lungs
D (i)-Trachea; (ii)-Bronchi; (iii)-Lungs


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

Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.

(i) In cockroaches, air enters the body through spiracles.
(ii) During heavy exercise, we get cramps in the legs due to accumulation of carbon dioxide.
(iii) Normal range of breathing rate per minute in an average adult person at rest is 12-18.
(iv) During exhalation, the ribs move upwards.

(i) (ii) (iii) (iv)
A F T F T
B T T F T
C T F T F
D T T T F


Ans 1:

Adwitiya Roy from South Point High School, KOLKATA
Class : Class 8

Ans 2:

Anvi from DPS, Noida
Class : Class 8
should be b

Ans 3:

Pari Shiddam from PIS Powai, MUMBAI
Class : Class 8
it should be B . The solution is also wrong

Ans 4:

Ayman Nadeem Khan from Indian School Al Ghubra, Muscat
Class : Class 7
IT SHOULD BE B!!!

Ans 5:

Saanjana from Vibgyor , Mumbai
Class : Class 8

Ans 6:

Ayan Vohra from Bhavan Vidyalaya , Chandigarh, chandigarh
Class : Class 7
it is B!!! SOF, I know you never listen but like come on at least fix your solutions, so they are actually correct.

Ans 7:

Arghya Kashyap from Modern Delhi Public School, Faridabad
Class : Class 7
It should be B

Ans 8:

Sarah Ahmad from st. mary's school, delhi
Class : Class 7
uh ya it should be B the last statement is true not false

Ans 9:

Saanjana from Vibgyor , Mumbai
Class : Class 8
It is 15-18, not 12-18.

Ans 10:

Yashraj Namdev Deshmukh from Sahyadri English School, Loha, Nanded
Class : Class 7
Its BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

Ans 11:

arnav raj sharma from DPS Vasant kunj, delhi
Class : Class 8
THE SOLUTION DOESN'T MAKE SENSE

Ans 12:

Subhang Deep Sahu from Chrysalis High Kadugodi . , Bangalore
Class : Class 7
it is BEEEEEEEEEEE!!!!!!!

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Subrata nayek from CBSC, ARAMBAGH
Subject :NSO    Class : Class 6

Read the given statements and select the correct option.
Statement 1 - We should use jute bags instead of plastic bags for carrying goods.
Statement 2 - Jute bags are cheaper than plastic bags.

ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true and statement 2 is false.
DBoth statements 1 and 2 are false.

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Souradeep Saha from DON BOSCO SCHOOL PARK CIRCUS, Kolkata
Subject :NSO    Class : Class 7

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Spandan Trivedi from D.A.V. International School, Ahmedabad
Subject :NSO    Class : Class 8

Ans 1:

Soumik from Dps bhilai, Bhilai
Class : Class 6

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Abhijeet Kumar Jha from New Era Senior Secondary School, Nizampura, Vadodara
Subject :NSO    Class : Class 5

Ans 1:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7
Z is Metamorphic :(

Ans 2:

shaun joel dasari from subs, chennai
Class : Class 5
yes it is

Ans 3:

Aadi from Delhi Public School , golaghat
Class : Class 7

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Abhijeet Kumar Jha from New Era Senior Secondary School, Nizampura, Vadodara
Subject :NSO    Class : Class 5

Ans 1:

Bubui from ABCD, Bangalore
Class : Class 5

Ans 2:

Inez from Vibgyor High Airoli, bangalore
Class : Class 5
Why have they put SST question in a science paper?

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