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from ,
Subject :NSO    Class : Class 7

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Vedika from Lotus, Gurgaon
Subject :NSO    Class : Class 2

Ans 1: (Master Answer)

from ,
Class :

The correct answer is A.

Count the number of total balls = 21
Count the number of crossed balls = 6
So, the subtraction sentence will be 21 - 6.
Now make the subtraction sentences for all options:
(A) 2 tens 1 one - 6 ones = 21 - 6 
(B) 2 tens 2 ones - 6 ones = 22 - 6 
(C) 2 tens - 6 ones = 20 - 6
(D) 2 tens 3 tens - 6 ones = 23 - 6


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from ,
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

from ,
Class :

The correct answer is B.

Total Smileys = 56
Green Smileys = 8
Fraction of Green Smileys = 8/56 = 1/7


Ans 2:

Prajwal Thakur from South Point High School, Kolkata
Class : Class 9
It will be 8/56,every answer is wrong because its a proper fraction so 8/56=8/56

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Atul Sanjeev from Indian School Al Ghubra, Muscat
Subject :NSO    Class : Class 5

Ans 1:

Rudra Tripathi from DPS Noida, Noida
Class : Class 10
I think answer is (C) as flowers changes into fruit and fruit changes into seed.

Ans 2:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 9
some plants can grow by vegetative reproduction which is not by flowers. Like carrots, Carrots does not have any flowers. I think the answer is D because if there are no leaves then who will make the food for the survival of the plant.

Ans 3:

Mohhika Sharma from Delhi Public School Greater Noida, Noida
Class : Class 5
Deepayan and Sumit are right..of course it is d, if there are no leaves the plant will die, how is it going to reproduce then??

Ans 4:

Yukta Jalasutram from Sunrise International School Abu Dhabi, Abu Dhabi
Class : Class 5

Ans 5:

KONDURU TEJESH from Sri chaitanya international school, Bangalore
Class : Class 4
i pressed option c but its incorrect

Ans 6:

Shruthi Murugaiyan from Kendriya Vidyalaya IIT, Chennai
Class : Class 8

Ans 7:

Ishaan Singhal from CCWS, Jaipur
Class : Class 5
but in some plants ther is no flower then also they can reproduce in a different manner

Ans 8:

Shubh Neema from St Norbert seniors secondary school, Indore
Class : Class 10
Stem is also correct for some plants like mint ,

Ans 9:

Vishnuteja V from BVBARRS, Hyderabad
Class : Class 6
In papaya plant, flower changes into fruit and fruit bears seeds. Seeds give rise to new plants when sown into the soil.

Ans 10: (Master Answer)

from ,
Class :

The correct answer is C

Flower changes into fruits and fruit bears seeds. Seeds give rise to new plants when sown into soil.


Ans 11:

from ,
Class :
Flower attract the insects for pollination,so the answer is C

Ans 12:

shalini mittal from DPS Greater Noida, Greater noida
Class : Class 4
I think it is seed only because if the other parts will no be there than how the previous plant will grow

Ans 13:

from ,
Class :
Think the correct ans'rs C Cause a flower changes into a fruit in the fruit then bears seads which give rise to new plants on being down in soil. That's what I think don't know if it is right!!!

Ans 14:

Goutham Ram from Lecole' Chempaka International, Trivandrum
Class : Class 5
All the answers are correct. None of them are wrong.

Ans 15:

Ruhaan Singh from Gopalan International School, Bangalore
Class : Class 7
d

Ans 16:

Arnav Vashisth from GD GOENKA PUBLIC SCHOOL, Delhi
Class : Class 5
c) WHY? Here it goes:How will it reproduce without flowers?Ideally? Leaves? Does cactus have leaves? Nope! It has leaves -2 - spines...

Ans 17:

from ,
Class :
but seeds can reproduce through stem , leaves , and root too , can't they ???

Ans 18:

Deepayan Das from South Point High School, Kolkata
Class : Class 6
It is not c because new plants can rise by vegetative reproduction which are not by seeds.It is by roots, stem or leaves. what, in case of byrophyllum plant.

Ans 19:

Abhijato Chatterjee from Bharatiya Vidya Bhavan, Kolkata, kOLKATA
Class : Class 6
the answer is d as many plants don't have flowers but still reproduce. Without the leaves, the plants can't make food.

Ans 20:

Manasvi Nagpal from blooming dales international school, sri ganganagar
Class : Class 5
WE HAVE READ THAT THEY CAN GROW WITHOUT FLOWERSIF THEY HAVE NOT FLOWERS THEY GROW IN A DIFFERENT MANNERVERY STUPID OF SOFSO MANY ERRORSWHAT EVER CORRECT OPTION IS D

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Anshuman Mishra from kv no 3, Bhubaneswar
Subject :NSO    Class : Class 6

Ans 1:

Ayan Vohra from Bhavan Vidyalaya , Chandigarh, chandigarh
Class : Class 8
why is everyone talking about wax and copper it is a question about statements and conductivity like bruh what

Ans 2:

A S Neeraj from K V 2, Chennai
Class : Class 6

Ans 3:

Saatwik Padhy from TREE HOUSE HIGH SCHOOL, VIRAR
Class : Class 8

Ans 4:

Arkaprabho Sau from Griffins International School, Kharagpur
Class : Class 9
It must be 'B' not 'A'

Ans 5:

Dheeraj Thriyambak M from Sri Sankara Senior Secondary School Adyar, Chennai
Class : Class 6
Sorry for giving the wrong information. At the beginning even I thought the answer was B.If you click the solution button, it says that since the copper rod has the least amount of wax on it, it is the better conductor as all the other wax on it has melted and fell down. That is why the answer is A not B

Ans 6:

Mayank Pramanik from Sri Chaitanya Techno School, Pune
Class : Class 6
IT WILL BE DDDDDDDDDDDDDDDDDDD

Ans 7:

R SANKARSHNAN from NPS, BANGALORE
Class : Class 10
It is A

Ans 8:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
ACCORDING TO ME THE CORRECT ANSWER IS B , FIRST WE HAVE TO UNDERSTAND THE PICTURE AND THEN ANSWER

Ans 9:

Dheeraj Thriyambak M from Sri Sankara Senior Secondary School Adyar, Chennai
Class : Class 6
it cannot be as you have said because the wax is dripping from the glass rod whereas on the copper rod, it is as it was first placed. And they will not give us a diagram if they are going to ask something not related to it.So, the answer must be B and not A.

Ans 10:

DEVAANGANA SARDAR from G.D. Birla Centre for Education, Kolkata
Class : Class 7
dddddddddddddddddddddddd

Ans 11:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA
Class : Class 7
The answer is 'a' because the rods are fully coated with wax, those rods which have less wax are good conductors because the wax melted and fell from it.

Ans 12:

Vivaan Kohli from Greenwood High International School, Bangalore
Class : Class 7

Ans 13:

Aarathy Sudhir Aarav Sudhir from Global Indian International School, Abu Dhabi
Class : Class 8

Ans 14:

ankit from i like peeing, i hate my self
Class : Class 8
ANSWER SHOULD BE C BECAUSE FIRRST IS CORRECT BUT METALS ARE GOOD CONDUCTERS OF HEAT

Ans 15:

BHAVYA JHA from GLOBAL CITY INTERNATIONAL SCHOOL, BANGALORE
Class : Class 6
I too agree with you .It's B and not A

Ans 16:

gayathri from NPS, Bengaluru
Class : Class 3
the wax has been applied all over the rod. copper has the least amount of wax on it. So it is the best conductor of heat whereas the glass rod has the most amount of wax thus it is the weakest conductor of heat.Thus,the option "A" is the correct answer

Ans 17:

Taanvi from , Bangalore
Class : Class 9

Ans 18:

ADVAY BANSAL from LOTUS VALLEY INTERNATIONAL SCHOOL GURUGRAM, GURUGRAM
Class : Class 8
what is this man do something

Ans 19:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
b is the answer

Ans 20:

Eashta Khodke from Elpro International School Chinchwad Pune, Pune
Class : Class 8
OK

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from ,
Subject :NSO    Class : Class 1

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vanshaj shah from tapti valley international school , surat
Subject :NSO    Class : Class 8

Ans 1:

IAMLOST from ABC, Pune
Class : Class 8

Ans 2:

Rishith Sunil from BVM Global BHS, Chennai
Class : Class 8

Ans 3:

Adhrit from CHSV, Chennai
Class : Class 8
Won't moving the slinky up and down produce the same result? You can check b observing from the side.

Ans 4:

savyasachi from montfort , roorkee
Class : Class 9

Ans 5:

Ayush Gorain from Sarala Birla Public School, Ranchi
Class : Class 8
In my opinion, the answer should be both option (C) and option (D). Transverse waves are waves in which the motion of particles are perpendicular to the motion of the wave (for example, light). Moving the slinky at an angle of 45 degrees to the table would create a wave, just not a perpendicular one, and thus not a transverse wave. This excludes option (A). Option (B) is also excluded, as it creates a longitudinal wave (motion of the particles is parallel to the motion of the wave). Option (C) involves the wave being moved up and down (assumed to be at right angles, since it is not mentioned). The slinky thus also moves up and down, and creates a transversal wave (as the motion of the wave is from Q to P, and the motion of the parts of the slinky is perpendicular to line QP). Option (C) is thus correct. Option (D) involves the wave being moved left to right (assumed to be at right angles, since it is not mentioned). This also created a transverse wave (as the motion of the parts of the slinky is perpendicular to the motion of the wave from Q to P). Option (D) is thus, also correct. Since we live in a three dimensional world, and it is not mentioned in the question that the experiment is performed in a 2 dimensional world, we can assume that the experiment is done in a 3D world. Due to the presence of length, breadth and height, the slinky can be moved in two ways perpendicular to line QP (i.e. the slinky). Given that both ways this can be done are mentioned in the question, both options must be correct. Therefore, I opine that the correct answer is both option (C) and option (D).

Ans 6:

Ojaswi from SAINT JOHNS CONVENT SCHOOL LANSDOWNE, DELHI
Class : Class 6

Ans 7:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 9

Ans 8: (Master Answer)

from ,
Class :

The correct answer is D

In transverse wave, vibration of a wave is perpendicular to its direction of propagation of wave.


Ans 9:

Sriram Venkatkrishnan from Basava International School, New Delhi
Class : Class 7

Ans 10:

from ,
Class :
The correct answer is D. In a transverse wave the direction of the movement of the particle is perpendicular to direction of motion of the wave. So, over here, when we move the end Q from left and right , it will produce a transverse wave,. You can check it by observing it from the top.

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from ,
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

from ,
Class :

The correct answer is A.

Sugar syrup is neutral and hence the colour of blue litmus and red litmus remains unchanged. Tamarind juice is acidic, so blue litmus turns red but red litmus does not change its colour. Lime water and soap solution are basic in nature which turn red litmus blue whereas blue litmus remains unchanged.


Ans 2:

Mayank Mili from Delhi Public School, Golaghat
Class : Class 9
Answer is A

Ans 3:

Aryan Ghatti from Mount saint mary school , Delhi
Class : Class 8

Ans 4:

YASH SAH from DELHI PUBLIC SCHOOL MIS DOHA, Doha
Class : Class 8

Ans 5:

CHIRAG SHAH from Lilavati Poddar , Mumbai
Class : Class 9
yeah the answer is a

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from ,
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

from ,
Class :

Fish Y will be least affected as it is camouflaging with the sea weeds. Fish Y can easily escape from the predator by blending with the surrounding environment.


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VV Souri from LITTLE FLOWER SCHOOL , UPPAL HYDERABAD
Subject :NSO    Class : Class 7

Ans 1:

pankaj srivastava from K R mangalam world school, vaishali
Class : Class 6
b is the correct answer

Ans 2:

Anish from Vibgyor, Pune
Class : Class 8
I think b is correct because there is no solidification

Ans 3:

Mohinder singh from Sacred heart convent school, Ludhiana
Class : Class 7
B is the correct answer

Ans 4:

JANYA CHANGELA from UDGAM SCHOOL FOR CHILDREN , Ahmedabad
Class : Class 8
I THINK THAT B IS ONLY THE CORRECT ANSWER

Ans 5:

Ronav Kerkar from Jamnabai Narsee School, Mumbai
Class : Class 7
either b or d

Ans 6:

Hritvi from Podar International School, Mumbai
Class : Class 7
I think B is the correct answer because there is no solidification taking place or else the water would have turned into ice. plus no solidification can take place when water is at room temperature.

Ans 7:

from ,
Class :
Three states - gas , liquid & solid When hot water temp is going down it will be ultimate become solid ie ice But before becoming ice temp will stagnant for some time where in both states liquid & solid co-exist==> some part of liquid is in ice form. X is the same state where in solid and liquid will co-exist. Hence option 4 is correct(solidification& evaporation) Note: Could not attach gif .It would have made it more clear.

Ans 8:

Avaneesh Sai Vemparala from The knowledge habitat, Pune
Class : Class 3
Also freezing and melting point of water is 0 degrees celsius

Ans 9:

from ,
Class :
i think b is the correct answer

Ans 10:

Hritvi from Podar International School, Mumbai
Class : Class 7
There is no proper solution for this question which will make it more confusing as everyone will have different opinions in this question.

Ans 11:

Bhumi Chheda from SVKM J V Parekh International School, Mumbai
Class : Class 9
i think b is correct

Ans 12:

arjun from the bishops school camp , pune
Class : Class 8
at 4 degree celsius water starts expanding and 'x' shows the same the room temperature might have been near or equal to the freezing point of water(eg room temperature of regions like arctic and antarctic)

Ans 13:

Ashwak from Cambridge, Jalandhar
Class : Class 9
B should be the correct answer I think

Ans 14:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10
why?

Ans 15:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 10
i think there is no option correct in this ques. no evaporation and boiling is taking place as it is cooling down towards the room temperature. also no condensation is taking place as in the ques it is written a HOT liquid is being transferred to a beaker. as well as solidification may also not take place because room temp is above 0 degree centigrate. SOF PLEASE SEE TO IT THAT THIS TYPE OF WRONGG QUESTIONS AND SOLUTIONS ARE NOT POSTED.

Ans 16:

Himanish Basu from Army Public School Kamaraj Road, Bangalore
Class : Class 7

Ans 17:

Avaneesh Sai Vemparala from The knowledge habitat, Pune
Class : Class 3
It cools towards room temperature so it does not freeze

Ans 18:

Sanidhya Kapoor from Shikshantar, Gurugram
Class : Class 8
It is cooling towards room temperature so it does not solidify since the freezing point is below room temperature.

Ans 19:

Debarka Das Gupta from Silchar Don Bosco School, Silchar
Class : Class 7
i think b is the correct answer

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