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kanchan rathi from DPS Bhilai, Durg
Subject :NSO    Class : Class 5

Ans 1:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
i think it's opt.d

Ans 2:

Mannat Verma from Vivek High School , Chandigarh
Class : Class 6

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Priyanshu Gupta from Ryan International School , Kandivali Mumbai
Subject :NSO    Class : Class 9

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Asmi Inamdar from KV IIT , Mumbai
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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Swati from Ryan, Bengaluru
Subject :NSO    Class : Class 5

Ans 1:

Namratha from JGRVK, Bengaluru
Class : Class 5
9

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ANANYA.KUMAR from DPS Noida, Noida
Subject :NSO    Class : Class 5

Ans 1:

Sanskriti Nagar from Rose Bud Academy, khagaria
Class : Class 5
C is the answerIf you open synopsis in this chapter,it is clearly written that a compass works with the help of earth's magnetic field

Ans 2:

RAMAYANI PAKHARE from S M SHETTY HIGH SCHOOL, MUMBAI
Class : Class 6
Earth's magnetic field (C)

Ans 3:

Deepika Goyal from Neerja modi school, Jaipur
Class : Class 7
C (EARTH'S MAGNETIC FIELD)

Ans 4:

Arav from Shishukunj International, Indore
Class : Class 5
The correct option is C as all compasses are controlled by Earth's magnetic field.

Ans 5:

Koustavi Chakraborty from DELHI PUBLIC SCHOOL, PUNE
Class : Class 5
answer is option c

Ans 6:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
Earth's magnetic field.

Ans 7:

Biju Pappachan from Rkc , Raipur
Class : Class 1
If u don’t understand after reading the solution tell Siri to explain u

Ans 8:

arya navare from Saint ursula school, kankavli
Class : Class 5

Ans 9:

Ankita Dave from GNS, Bangalore
Class : Class 4
C is the answer to this question

Ans 10:

Akshita Krishnan from DPS Noida, Noida
Class : Class 5
I still don't understand this question after reading the solution.😬😱

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Charu Gupta from DPS Faridabad, Faridabad
Subject :NSO    Class : Class 7

Ans 1:

arjun from the bishops school camp , pune
Class : Class 8
OPTION D SHOULD BE ''BOTH B AND C

Ans 2:

PS Gour from Chirec international schoo The best 30 years and beyond, Hyderabad
Class : Class 7
the last option is not understandable

Ans 3:

Nida Farheen CM from vedavyasa, kozhikode
Class : Class 8
the answer is d

Ans 4:

Jahnavi Srikoti from narayana, Ghaziabad
Class : Class 7
d is incomplete

Ans 5:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 8
D IS INCOMPLETE OPTION.

Ans 6:

Hritvi from Podar International School, Mumbai
Class : Class 7
D is an incomplete option .

Ans 7:

Ayush Anand Sharma from GEMS international school , Gurgaon
Class : Class 8
please explain

Ans 8:

yash kirpalani from st gregorios high school chembur, Mumbai
Class : Class 7
the last option is incomplete the complete option should be Both B and C

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Hiyansh Jain from Podar International School, Mumbai
Subject :NSO    Class : Class 5

Which of the following statements is correct?

A The mantle or the upper layer of the Earth is made of volcanoes.
B The liquid that comes out of a volcano is called magma.
C Based on the nature of eruption, volcanoes can be active, dormant or extinct.
D The magnitude of tsunami is measured on Richter Scale developed by Charles Richter in 1985.


The liquid inside the volcano is called lava . When it comes out it is called magma.

Ans 1:

legendary ninja from dps gurgaon, Gurgaon
Class : Class 7

Ans 2:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 6
Totally agree with you Mannat

Ans 3:

SHREYAS ANANDHAN from Phoenix Greens International School, Hyderabad
Class : Class 6
nope you are telling the opposite

Ans 4:

SHREYAS ANANDHAN from Phoenix Greens International School, Hyderabad
Class : Class 6
nope you are telling the opposite

Ans 5:

Anantjit Chander from Apeejay School, Faridabad
Class : Class 5
The answer is (C), but (B) can also be the answer.

Ans 6:

Anantjit Chander from Apeejay School, Faridabad
Class : Class 5
I feel the (B) should be the correct answer, so please explain why (C) is the correct one.

Ans 7:

Anantjit Chander from Apeejay School, Faridabad
Class : Class 5
Sorry, I had was to mark this one only, but instead of (C), I clicked on (B)!

Ans 8:

Hiyansh Jain from Podar International School, Mumbai
Class : Class 7

Ans 9:

Biju Pappachan from Rkc , Raipur
Class : Class 1
The correct Ans is B and I did B but SOF is telling me I did C. Impossible and I am telling the truth I swear.

Ans 10:

Athiya Mahapatra from ITL Public School, NewDelhi
Class : Class 5
From Athiya Mahapatra: option)c As the Upper layer of Earth is called Crust. The liquid which flows outside a volcano is called lava and Richter Scale is used to measure intensity of earthquakes.

Ans 11:

Mannat Verma from Vivek High School , Chandigarh
Class : Class 6
Volcano is an opening on the surface of Earth’s crust. There are three types of volcanoes: (i) Active volcanoes are those which are currently erupting or have erupted in the last 10,000 years. (ii) The dormant volcanoes are in a state of sleep. This means that they had erupted in the past but can erupt again, however, at the moment they are asleep. (iii) Extinct volcanoes are those that have been inactive for thousands of years and are not expected to erupt again. The liquid that comes out of a volcano is called lava. Richter scale measures magnitude of earthquakes and was developed by Charles Richter in 1935.

Ans 12:

Hiyansh Jain from Podar International School, Mumbai
Class : Class 7
ok

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Sanjeev Garg from Assumption Convent School, malout
Subject :NSO    Class : Class 5

Ans 1:

INDRANI GHOSH ROY from AMRITA VIDYALAYAM, Durgapur
Class : Class 5
First of all, fish, crocodile and snakes, all these three are egg laying animals. Secondly, all of them are cold blooded animals. And thirdly, all of them are covered with scales. And therefore, statements 1, 2 & 3 are correct. That is why option C is correct.

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YASH SAH from DELHI PUBLIC SCHOOL MIS DOHA, Doha
Subject :NSO    Class : Class 5

Ans 1:

Niveideeta Cour from Suncity World School, Gurgaon
Class : Class 5
got a little confused here but sorted it out

Ans 2:

AREEN from BOLTON, HYDERABAD
Class : Class 6
Ans is C because 0 minutes was 20 degrees celsius. Then, we were adding 6 after 2, 4, 6 minutes and so on. 1 is half of 2, and 1+2=3. So we should take normally 26 degrees celsius+(Half of 6) degrees celsius=26 degrees celsius+3 degrees celsius=29 degrees celsius.

Ans 3:

Arnav kaul from Chirec, Hyderabad
Class : Class 5

Ans 4:

VAIBHAVH RAMESH from NARAYANA ETECHNO WHITEFIELD, BANGALORE
Class : Class 5

Ans 5:

YASH SAH from DELHI PUBLIC SCHOOL MIS DOHA, Doha
Class : Class 7
syu

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Siri B Patil from Indian School, Sohar, Oman, Sohar
Subject :NSO    Class : Class 5

Ans 1:

D Murari from Indian School of Excellence, Bangalore
Class : Class 5

Ans 2:

Ankita Dave from GNS, Bangalore
Class : Class 4
You are right Aryaveer and Shaurya Shinde. My answer is also B

Ans 3:

Aryaveer And Shaurya Shinde from Goldcrest High Vashi, Navi Mumbai
Class : Class 6
z)fishing road is not used to change the speed of an object.y)the gears are used to increase the speed but not the direction'Thus the answer is B)Y and Z

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