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Saanvi Santaji Yadav from Lead School mogavali , Mangoan
Subject :NSO    Class : Class 2

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

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Saanvi Santaji Yadav from Lead School mogavali , Mangoan
Subject :NSO    Class : Class 2

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Please visit our website- http://www.sofworld.org or call us at  0124-4951200 (Landline No), 9312680855, 9312680857 (Mobile:).


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Mridul Jain from Shishukunj International School Indore, Indore
Subject :NSO    Class : Class 5

A student investigates erosion using four kinds of equal amount of earth materials: top soil, clay, sand and soil planted with grass. Equal amounts of water is allowed to flow from the surface of each type of earth material. The water is then separated out from the earth material with the help of a filter. The given figure shows the amounts of earth material that are collected. The results of this investigation best support which conclusion?


ATop soil is easily eroded.
BSand has a smooth texture.
CWater travels fastest through soil planted with grass.
DWater drains most quickly through clay.


Can you please explain.

Ans 1:

Bhadra Biju from INDIAN SCHOOL AL GHUBRA, Muscat
Class : Class 8
how?

Ans 2:

shreedhar from the shri ram school, delhi
Class : Class 5
top soil is easily eroded (a)

Ans 3:

tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi
Class : Class 4
answer a soil erosion will occur

Ans 4:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
most soil is in A so it is not C is the answer

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Gokulakrishnan from Rosemary public school, Tirunelveli
Subject :NSO    Class : Class 9

Ans 1:

Saanvi Rao from Shree Krishna International School, Vapi
Class : Class 9
Sublimation because it is the process of change of state of matter from solid to gas without changing into liquid state.

Ans 2:

Advait talnikar from Dhruv Global School, Sangamner
Class : Class 6
Ans. is A sublimation

Ans 3:

Gokulakrishnan from Rosemary public school, Tirunelveli
Class : Class 9
The answer is A.sublimation

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Abhineeth Maity from Bright Riders School, Abu Dhabi
Subject :NSO    Class : Class 9

Which of the following statements about the given experimental set-up is/are incorrect?

I. It is used to separate a mixture of two or more miscible liquids for which the difference in boiling points is more than 25 K.
II. It is used for the separation of different gases from air.
III. It is used to separate acetone and water from their mixture.
IV. It is based on the principle of repeated cooling and condensation of vapours by providing surface for the vapours.

A I only
B III and IV only
C I and II only
D I and III only


Ans 1:

Suvan Shee from Chirec public school, Hyderabad
Class : Class 9
yes it 1 and 3 only

Ans 2:

Bipasana from KV IIT Kanpur, Kanpur
Class : Class 9
Fractional distillation is used to separate liquids with less than 25 K difference in boiling points.

Ans 3:

Gokulakrishnan from Rosemary public school, Tirunelveli
Class : Class 9
3 and 1 only

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Aniket Hedde from Podar International School, Nanded
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is D

The electonic configuration of manganese (atomic number=25) is 1s2 2s2 2p6 3s2 3p6 3d5 4s2


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Neha Sharma from St Patricks, Bhatinda
Subject :NSO    Class : Class 4

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Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Subject :NSO    Class : Class 6

Which of the following statements is correct ?
(i) The response of plant towards the Earth is called phototropism .
(ii) The ability of certain animals to blend with the surrounding, making them difficult to spot is called camouflage.
(iii) Whales and dolphins breathe in oxygen from water through gills.
(iv) Hibernation is an adaptation for escaping hot weather.

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


escaping hot weather is called aestivation . hibernation is escaping from cold weather .

Ans 1:

Goldilocks from Sharada Mandir School, Miramar, Panjim, Goa, Panjim Goa
Class : Class 8
Okay manvi

Ans 2:

santosh katiyar from narayana vidhyalayam, Nagpur
Class : Class 7
THE CORRECT ANSWER IS (A)

Ans 3:

Shourya Ganesh from The Green Acres Academy, Mumbai
Class : Class 9
Statement 4 is wrong because hibernation is done to escape cold weather not hot , so SOF is wwwwwwwwwwrrrrrrrrrrrrrrrrrrrooooooooooooooonnnnnnnnnnnnnnnngggggggggggggggggggg

Ans 4:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
I WANT EXPLAINATION

Ans 5:

Ridit Mishra from Delhi Public School, Gurgaon
Class : Class 8

Ans 6:

Vidwat Amal from Podar International School , Anand
Class : Class 8
statement 4 is wrong and none of the options is correct as response of plants towards earth is called geotropism

Ans 7:

Ridit Mishra from Delhi Public School, Gurgaon
Class : Class 8
Option A is Wrong

Ans 8:

Dipam from Podar International School, Aurangabad
Class : Class 8
YES The correct answer is (A).

Ans 9:

Snigdha swaminath from Christ nagar higher secondary school , Trivandrum
Class : Class 7
The answer is wrong

Ans 10:

Ridit Mishra from Delhi Public School, Gurgaon
Class : Class 8
According to me Statement 2 is correct

Ans 11:

Sanskar Jaiswal from Rungta Public School, Bhilai
Class : Class 9
bot

Ans 12:

Parshti Bajpai from Modern Public School, ALWAR
Class : Class 7
Hibernation is done in winters not summers so OPTION A IS CORRECTTTTTT

Ans 13:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
option 4 if wrong. pls Chk soF other thn that all are correct .

Ans 14:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 10
here , statement 1 , 3

Ans 15:

MInnal Senthil from Prakriya, Bangalore
Class : Class 5
not a because The response of plant towards the sun is called phototropism

Ans 16:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 10
here all the statements are wrong except 3rd statement

Ans 17:

Goldilocks from Sharada Mandir School, Miramar, Panjim, Goa, Panjim Goa
Class : Class 8
none of the answers are correct

Ans 18:

Iba khan from DPS GBN, Noida
Class : Class 6
none of the options are correct as the only correct statement mentioned here is (ii)

Ans 19:

Daksh Kumar from GCIS, Bangalore
Class : Class 7
THE CORRECT ANSWER IS A

Ans 20:

Aarya Singh from Indian School Ghubra, Muscat
Class : Class 3
none of the options are correct

Ans 21:

Ridit Mishra from Delhi Public School, Gurgaon
Class : Class 8
Yes none of the options are correct

Ans 22:

Karthik from Euro, Bengaluru
Class : Class 7
sof is wwwwwwwwwwwwwwwwwwwrrrrrrrrrrrrrrrrrrrrrrrrrroooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnngggggggggggggggggggggggggggggggggggggggggggg

Ans 23:

KEERTHANA SHIBU from INDIAN SCHOOL GHOUBRA, Oman
Class : Class 7
sof wrong ans there should be option like:only ii is correct

Ans 24:

Medha Bijjaram from Prime Academy, Mumbai
Class : Class 9

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VAIBHAV KALVAKOTA from THE LEXICON INTERNATIONAL SCHOOL WAGHOLI, PUNE
Subject :NSO    Class : Class 8

Ans 1:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
The Options Are wrong I guess because only (i),(ii)and(iii) are in use

Ans 2:

Student from School, City
Class : Class 8
The Options Are wrong because only 123 are in use.

Ans 3:

VAIBHAV KALVAKOTA from THE LEXICON INTERNATIONAL SCHOOL WAGHOLI, PUNE
Class : Class 8

Ans 4:

Anirudh from Kendriya Vidyalaya Kanjikode, Palakkad
Class : Class 8
All the properties friction are in use. Hence, the correct one option 'D'.

Ans 5:

Student from School, City
Class : Class 8
The Options Are wrong because only 123 are in use.

Ans 6:

Hprakash09 from Billabong high Bhopal, Bhopal
Class : Class 7
The answer is correct, as when friction occurs, obviously, all of its properties will occur, even if not all of the properties are required. That's... how friction works.

Ans 7:

Adhrit from CHSV, Chennai
Class : Class 8
It's not asking about which properties occur (which would be all of them), it's asking which are in use. And that's only 1, 2, and 3. So the options are wrong

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VAIBHAV KALVAKOTA from THE LEXICON INTERNATIONAL SCHOOL WAGHOLI, PUNE
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is C.


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