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Aarush Laddha from NCFE, bengaluru
Subject :NSO    Class : Class 6

Geeta placed three objects made of different materials as shown in the figure. She observed a bright spot of light at (II) but (III) would not get any spot. Then,


A (I) and (II) are made of transparent materials and (III) is made of opaque material.
B (I) is made of transparent material, (II) is made of translucent material and (III) is made of opaque material.
C (I) is made of transparent material, (II) is made of opaque material and (III) is made of either transparent or opaque or translucent material.
D (I) and (II) are made of opaque material and (III) is made of transparent material.


Answer can be B also because (iii) did not get any spot so it should be opaque and (ii) is translucent as a direct source of light is coming from the torch because (i) is transparent.

Ans 1:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
No, the right answer is opt. c because if II is translucent, then it will NOT GET A CLEAR BRIGHT SPOT but a hazy one.

Ans 2:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
IF [I] WILL BE TRANSPARENT ,AS WE KNOW THAT THE MATERIALS WHICH ALLOW LIGHT TO PASS THROUGH THEM ARE CALLED TRANSPARENT SO IF WE CUT OUT A SQUARE TRANSPARENT SHEET FROM A ROLL OF TRANSPARENT ,SURELY THE LIGHT PATCH WILL PASS THROUGH[II]THEN THE [II] MATERIAL SHOULD BE SOMETING WHICH CAN NOT ALLOW LIGHT TO PASS TROUGH IT IT SHOULD BE OPAQUE AND THE LAST SQUARE[III] CAN BE MADE OUT FROM ANY MATERIAL,THUS IT WILL NOT CHANGE THE ANSWER.SO WE CONCLUDE THE CORRECT ANSWER IS C

Ans 3:

Aarnav Grover from Anand Niketan Shilaj, Ahmedabad
Class : Class 9
c

Ans 4:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
No, the right answer is opt. c because if II is translucent, then it will NOT GET A CLEAR BRIGHT SPOT but a hazy one.

Ans 5:

Anshuman Mishra from kv no 3, Bhubaneswar
Class : Class 7
to my knowledge the ans is c

Ans 6:

Anshuman Mishra from kv no 3, Bhubaneswar
Class : Class 7
to my knowledge the ans is c

Ans 7:

amogh from DELHI PUBLIC SCHOOL NOIDA, Ghaziabad
Class : Class 6
correct answer is C

Ans 8:

Parth Kaushish from MDPS, Faridabad
Class : Class 6
its c as transparent object 1 will allow light ti pass. opaque object 2 wont allow anything to pass and will make a patch of light and the last could be anything

Ans 9:

Sai Laasya G from GIIS, Abu Dhabi
Class : Class 8
option c

Ans 10:

Parth Kaushish from MDPS, Faridabad
Class : Class 6
it could be b too as it is not clear that if it has any problem in it like hazy r said if its clear

Ans 11:

Kanishk Mukherjee from BDM International, Kolkata
Class : Class 6

Ans 12:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
c

Ans 13:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
SOF I had given C how you show that I gave B???

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Shuvangi Das from Vivekananda mission school, haldia
Subject :NSO    Class : Class 4

The descending order of heat conducting property of four metals a, b, c and d is a > b > c > d.
An experiment was conducted to find out how these different metals, when combined, will conduct heat. A small ball of candle wax was placed on one end and a flame near the other end. The set-ups are shown below. In which set-up will the wax drop off first?

A
B
C
D


Good night images with baby pictures and pics of the page for an email address for the program to be in the process of getting the the one who is the cleverest birbal or gopal bhar ke liye bhi kuch nahi hai kya tu bhi na kabhi to nahi hai kya tu bhi na kabhi to nahi hai kya tu bhi na

Ans 1:

Sashriti Das from Delhi Public School Bangalore North, Bangalore
Class : Class 5
Thanks Again Ishit, Riddhiman, and Avyukt!🙏

Ans 2:

Arnav Vashisth from GD GOENKA PUBLIC SCHOOL, Delhi
Class : Class 5

Ans 3:

Bhavya Sheth from Bright Day School, Vadodara
Class : Class 6
Ishit and Riddhiman thank you for clearing my doubts

Ans 4:

Chinmayee from Dimensions , Singapore
Class : Class 4
The answer can either be B or D.

Ans 5:

Avyukt Sahoo from Pallavi International School , Hyderabad
Class : Class 4
there is no necessity of mentioning the words: "descending order". This is contradictory to the statement: A>B>C>D. Hence the question is wrong.

Ans 6:

Riddhiman Bose from Don Bosco School, Kolkata
Class : Class 5
class 4

Ans 7:

Anwita L Bhat from Vijaya vittala vidyashala, Mysore
Class : Class 4

Ans 8: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Kindly mention your query

Ans 9:

Riddhiman Bose from Don Bosco School, Kolkata
Class : Class 5
That answer is D as b,a and b are the best conductors of heat so the heat would pass through b,a and b faster and it is balanced.Nice question.

Ans 10:

SRISANTH from Edify, Tirupathi
Class : Class 5

Ans 11:

Anwita L Bhat from Vijaya vittala vidyashala, Mysore
Class : Class 4

Ans 12:

Chinmayee from Dimensions , Singapore
Class : Class 4
The answer has to be D.

Ans 13:

ishit from EUROSCHOOL THANE, THANE WEST
Class : Class 7
That answer is D as b,a and b are the best conductors of heat so the heat would pass through b,a and b faster and it is balanced.Nice question.

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AARNA Kapse from The swaminarayan school, Nagpur
Subject :NSO    Class : Class 2

Ans 1:

Ipshita from VIBGYOR, Bengaluru
Class : Class 1
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Aaryav Tiwari from DPS VK, Delhi
Subject :NSO    Class : Class 6

Consider the following statements (i) - (iv) and select the option that correctly identifies true (T) and false (F) ones.
(i) Sucrose is the sugar found in milk.
(ii) Saturated fats are solids at room temperature while unsaturated fats are liquids.
(iii) Fat soluble vitamins are not stored in our body and need to be regularly supplied through food.
(iv) Vitamin C is very sensitive to heat and is easily destroyed during cooking.
(v) Our body can make two vitamins, i.e., vitamin K and vitamin D.

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


Ans 1:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
My query is, I didn't understand anything. Pls explain me

Ans 2:

Dushyant Singh from Shree Ram Centenial School, Indore
Class : Class 9
ans is b

Ans 3:

NIVED PRAKASH NAIR from SARVODAYA, THIRUVANANTHAPURAM
Class : Class 8
Please explain how unsaturated fats are liquids at room temperature

Ans 4: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Kindly mention your query

Ans 5:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8

Post Your Answer

karunesh tiwari from SJ education centre , Kanpur
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Please mention your query

Post Your Answer

Aditya Sai Vemparala from Amanora school, Pune
Subject :NSO    Class : Class 7

Ans 1:

Nussrat from Army Goodwill Public School Rajouri, Rajouri
Class : Class 7
42

Ans 2:

Aditya Sai Vemparala from Amanora school, Pune
Class : Class 10
It's 42 guys

Ans 3:

Dheeraj from Sri Sri Ravishankar Vidya Mandir, Bangalore
Class : Class 7
The answer is 42!!!

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Bhavana Goswami from South City International, Kolkata
Subject :NSO    Class : Class 10

In the following figures, optical instruments are placed inside boxes (A) and (B). Which of the following options is correct for these?


A In (A), the incident rays are diverged after refractions, so lens is concave.
B In (B), the incident rays are converged after refraction so mirror is convex.
C In (A), the incident rays are diverged after refraction so mirror is convex.
D In (B), the incident rays are converged after refraction so lens is concave.


Aren't both options A and B correct?

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Here, the correct answer is A. In (A), the incident rays are diverged after refraction, so the lens is concave and in (B), the incident rays are converged after refraction, so the lens is convex.

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Aarush Laddha from NCFE, bengaluru
Subject :NSO    Class : Class 6

Ans 1:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
WHAT IS THE CLASS THIS IS LIKE MATHS

Ans 2:

Manvi Mundepi from Montfort School Roorkee, Roorkee
Class : Class 9
WHAT IS THE CLASS THIS IS LIKE MATHS

Ans 3:

Anika Saha from New Town School, KOLKATA
Class : Class 6
Why are there maths questions in science paper?????

Ans 4:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 9
i did not understand the question

Ans 5:

ARYAN DAS from LOKHANDWALA FOUNDATION SCHOOL, MUMBAI
Class : Class 8

Ans 6:

Raghaov Sharma from DPS Dwarka , delhi
Class : Class 8
thanks admin for the explanation

Ans 7:

Agustya vaid from Somerville school vasundhara enclave, Delhi
Class : Class 7
in short words this was easy

Ans 8:

Anshuman Mishra from kv no 3, Bhubaneswar
Class : Class 7
the ans will be c

Ans 9: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Here, the answer is C. Displacement is the shortest distance covered by a body. In a circular path, the distance between the initial point (Here=P) and the final point (Here=Q) will give you the displacement. Here, Shortest distance between P and Q is PO + OQ = a + a = 2a Hence, the displacement of the cyclist would be 2a.

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Sheethal from Global public school, Ernakulam
Subject :NSO    Class : Class 6

Ans 1:

Dheeraj Thriyambak M from Sri Sankara Senior Secondary School Adyar, Chennai
Class : Class 6
c

Ans 2:

Anushka Srivastava from Cjm, Dehradun
Class : Class 7
The answer is c

Ans 3:

Dushyant Singh from Shree Ram Centenial School, Indore
Class : Class 9

Ans 4:

Prabhav Kaushik from DPS Noida, Noida
Class : Class 8

Ans 5:

Shreeya Mangla from ASN Senior Secondary School, New Delhi
Class : Class 8
Can anyone explain what 'inorganic elements' are?

Ans 6:

Ashwak from Cambridge, Jalandhar
Class : Class 8
C is correct

Ans 7:

Neev V Sawant from Montfort Senior Secondary School, Roorkee
Class : Class 7

Ans 8:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA
Class : Class 7
c

Ans 9:

Aarush Laddha from NCFE, bengaluru
Class : Class 6
Answer is C because Y is minerals.Minerals are inorganic.Excess consumption of minerals does not cause obesity.So they have told to mark incorrect answer.Therefore C is correct

Ans 10:

Preeti tanwar from DON BOSCO ACADEMY, Patna
Class : Class 9
c

Ans 11:

Aahan Mishra from KV-IIT Chennai, Chennai
Class : Class 7
ty

Ans 12:

Raksheet Shah from Swami Vivekanad International School, Mumbai
Class : Class 8

Ans 13:

Divyesh Padhalni from brookfield high, Bengaluru
Class : Class 9

Ans 14:

kpks14 from RIMT World School, Chandigarh
Class : Class 7

Ans 15:

Pratul Kumar Sahoo from Presidium, Gurugram
Class : Class 4
c

Ans 16:

satwik patnaik from DPS Rourkela, Rourkela
Class : Class 7
c

Ans 17:

Asank Kumar from Delhi Public School, navi mumbai
Class : Class 9

Ans 18:

Aditya Mahajan from DPS Noida, noida
Class : Class 9
The answer should be (d),not (c).

Ans 19:

Can I get Rank 35 darryl from Global Indian international school, Brawl stars
Class : Class 8

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

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Here, the answer is B. Since in a magnetic needle the arrow head is the North Pole, it will point towards the South Pole of the left hand side magnet and the other end of the magnetic needle (i.e; South Pole) will point towards the North Pole of the right hand side magnet.This is because like poles repel and unlike poles attract each other. Hence,the polarity of the end P of the right hand side magnet is North.

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
Here, the answer is B. Since in a magnetic needle the arrow head is the North Pole, it will point towards the South Pole of the left hand side magnet and the other end of the magnetic needle (i.e; South Pole) will point towards the North Pole of the right hand side magnet.This is because like poles repel and unlike poles attract each other. Hence,the polarity of the end P of the right hand side magnet is North.

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