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Shreyansh from St Xaviers School, Bokaro
Subject :NSO    Class : Class 7

During the science activity, Ms Prabha demonstrated an experiment in following steps:

Step 1 : She burned a substance X over the candle flame and white dazzling light was observed. Also white powdery ash was left behind.
Step 2 : She mixed the white ash formed with small amount of water. Then she dipped red and blue litmus papers into the solution one by one.

Which of the following observations are correct?
I. The substance burned in step 1 was magnesium.
II. The white ash formed in step 1 was magnesium oxide.
III. The solution formed in step 2 was acidic in nature
IV. The solution formed in step 2 turned blue litmus red.

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


I think the correct answer is a but the trainer is showing b

Ans 1:

SAMIT from JSS SMCS DHARWAD, DHARWAD
Class : Class 8
OPTION A

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Manvi Mundepi from Montfort School Roorkee, Roorkee
Subject :NSO    Class : Class 6

Ans 1:

Shreyas V Poojary from Sri Sri Ravishankar Vidya Mandir , Bangalore
Class : Class 7

Ans 2:

Aditya Saha from The Lexicon International School Kalyaninagar Pune, Pune
Class : Class 7
B is reticulate Vention how ever all others are parrlel vinetion

Ans 3:

Shriya Sreekrishna from BLUEBELLS SCHOOL INTERNATIONAL, New Delhi
Class : Class 7

Ans 4:

Shayan Bari from Kendriya Vidyalaya, Katihar
Class : Class 7
D is a flower but others are leaves.

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Manvi Mundepi from Montfort School Roorkee, Roorkee
Subject :NSO    Class : Class 6

Ans 1:

Ashher Pervez from DPS Bhilai, Bhilai
Class : Class 8
the answer is option c as the compass needle always points to south pole of a magnet.in this figure the compass needle is pointing towards the left hand side magnet's pole which means that pole's polarity is south and the pole of right hand side magnet is north. you should do a practical of this figure!

Ans 2:

Snigdha swaminath from Christ nagar higher secondary school , Trivandrum
Class : Class 7

Ans 3:

Daksh from RKC, Rajkot
Class : Class 6

Ans 4:

Anushka Wasnik from DPS, nagpur
Class : Class 7
Good

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Manvi Mundepi from Montfort School Roorkee, Roorkee
Subject :NSO    Class : Class 6

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Manvi Mundepi from Montfort School Roorkee, Roorkee
Subject :NSO    Class : Class 6

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Manvi Mundepi from Montfort School Roorkee, Roorkee
Subject :NSO    Class : Class 6

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Meetansh Agrawal from GG, Pune
Subject :NSO    Class : Class 3

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Arnav kaul from Chirec, Hyderabad
Subject :NSO    Class : Class 5

Man carries out deforestation to provide space for buildings and farms. Some also cut down trees to provide wood for furniture and paper manufacturing. Which of the following would possibly result from the above activities?
(i) Top soil erosion may occur.
(ii) Some animals may become extinct.
(iii) There may arise a problem of global warming.
(iv) Some possible sources of natural drugs to cure diseases may be lost.

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


Ans 1:

AREEN from BOLTON, HYDERABAD
Class : Class 6
Ans is D because top soil erosion will occur. Because of less trees, there will not be enough supply of food, so herbivores will become extinct, if there will no herbivores, there will be no carnivores and omnivores also. As carbon dioxide is a greenhouse gas, more amount of carbon dioxide will cause global warming. And trees are used to make some medicines, so if trees wil be not there, this will lead to loss of some medicines.

Ans 2:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 6
no fellow areen correct ans is C

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Samarth Sabari from GIIS, Singapore
Subject :NSO    Class : Class 4

Kusum categorised animals on the basis of their habitats. She made three groups of three organisms each. By mistake, she placed one wrong member in each group. Identify the wrong member and select the correct option.
Group 1- Penguin, Camel, Polar bear
Group 2- Kangaroo rat, Meerkat, Muskox
Group 3- Dolphin, Pomfret, Hedgehog

APenguin of group 1 should be interchanged with pomfret of group 3.
BPenguin of group 1 should be replaced with snake.
CCamel of group 1 should be interchanged with muskox of group 2.
DHedgehog of group 3 should be replaced with jellyfish.


Reference of jellyfish in question has to be replaced with with silverfish

Ans 1:

Sreejani Bhaduri from National Public School, Bangalore
Class : Class 4
What!!!!!!'!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!L!!!!!!!!!K!!!!!!!!J!!!!!!!!!!L!I!!Kffuguhguhuhihhhfyfhvhv

Ans 2:

ASHMI Narkar from Vibgyor High Airoli, Navi Mumbai
Class : Class 4
D would be A

Ans 3:

Anika from Alphabets, Chennai
Class : Class 5
D

Ans 4:

Swarnava Pal from Vivekananda Mission School, Haldia
Class : Class 5
vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

Ans 5:

ASHMI Narkar from Vibgyor High Airoli, Navi Mumbai
Class : Class 4
Both C and D are correct because if Kusum did both of these all three groups are correct so they should keep C and D in the different positions like A

Ans 6:

ASHMI Narkar from Vibgyor High Airoli, Navi Mumbai
Class : Class 4
D

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Ashher Pervez from DPS Bhilai, Bhilai
Subject :NSO    Class : Class 6

Ans 1:

saanvi from rvk, bengaluru
Class : Class 6
the answer must be 35th

Ans 2:

from , Jhalda
Class : Class 7
C

Ans 3:

Varuni from Manasarowara pushkarini vidyashrama , Mysuru
Class : Class 5
It is c

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