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Dhruvan G from Indian School al Ghubra, Muscat
Subject :NSO    Class : Class 8

Read the given passage and select the correct option for X and Y.
Microorganisms are used for the large scale production of alcohol, wine and acetic acid. X is used for commercial production of alcohol and wine. The process of conversion of sugar into alcohol is known as Y.

A X : Streptococcus; Y : Aerobic respiration
B X : Saccharomyces Y : Fermentation
C X : Lactobacillus; Y : Fermentation
D X : Saccharomyces; Y : Aerobic respiration


Isn't it C?

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is B

Microorganisms are used for the large scale production of alcohol, wine and acetic acid. Yeasts are mainly used in the commercial production of wine, beer and other alcoholic drinks. The main yeast species used is Saccharomyces cerevisiae. The process of conversion of sugar into alcohol is known as fermentation. 


Ans 2:

TARUN from DAV, DHANBAD
Class : Class 8

Ans 3:

TARUN from DAV, DHANBAD
Class : Class 8
Ans.- (B) X is Saccharomyces cerevisiae and is used to make wine. This process of conversion of sugar into alcohol in the absence of air(anaerobic respiration) is called Fermentation (Y)

Ans 4:

Anay Harish Marda from Shraddha Olympiad school, Ichalkaranji
Class : Class 7

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Dhruvan G from Indian School al Ghubra, Muscat
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is A

When a disease causing microbe (such as virus) enters body, some white blood cells produce chemicals called antibodies that surround the invader microbe. Once the virus has been surrounded by antibodies the white blood cell eats it.


Ans 2:

Ankit kumar Jha from Ryan International School , Ghaziabad
Class : Class 9
thank you

Ans 3:

Sahasra Shanker from KV IIT, Chennai
Class : Class 6
wow! they are so intelligent, I mean the white blood cells. could anyone please give a detailed explanation of this procedure of how it happens. thanks

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Kishore from National public school, Namakkal
Subject :NSO    Class : Class 8

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Shweta Garg from Vibgyor high, Vadodara
Subject :NSO    Class : Class 5

Ans 1:

SWAPNIL DATTA from JULIEN DAY SCHOOL KALYANI, KALYANI
Class : Class 10
Those are philosophical thoughts which we get in our brain. We are yet to confirm such theories.

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Shweta Garg from Vibgyor high, Vadodara
Subject :NSO    Class : Class 1

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Please mention your query


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Sowmya Chandrasekaran from DAV GIRLS SENIOR SECONDARY SCHOOL, Chennai
Subject :NSO    Class : Class 4

Ans 1:

Riddhima Pandey from Chinmaya Vidyalaya, Bokaro Steel City
Class : Class 3
When we pollute the air most likely acid rain will occur so option a is wrong and option b is correct

Ans 2:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Two options are confusing A and BA will be air pollution not water pollution please EXPLAIN this master answer you have NEVER EXPLAINED it to me always saying the answer is A or the answer is B or answer is C or D. But why is the answer A B C 0r D you should explain if you don't want to explain don't explain and don't give the answer also Then i'll tell SOF that the master answer from noida is giving the answer to us but not the explanation and in science if we have got the wrong answer then we should also get the explanation of every answer or else how will we understand the answer? we will have a doubt then what will we do

Ans 3:

Rishan Sandeep Gadhia from Orchids International, Mumbai
Class : Class 8
b is the answer because using recycled water is a method of conserving water

Ans 4:

Bhavtosh Tripathi from Maneckji Cooper Education Trust School, Mumbai
Class : Class 9
b

Ans 5:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
gcjftytrdmhfeahhfmihgvn

Ans 6:

Mishika shah from little angels high school, gwalior
Class : Class 9

Ans 7:

ANAY GUPTA from CMS KANPUR ROAD LUCKNOW, LUCKNOW
Class : Class 8
you have given two options that are completely wrong so how can we decide which is correct or wrong

Ans 8: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Ans 9:

Abhinav Kulkarni from National Centre For Excellence, Bengaluru
Class : Class 4
the ans is B

Ans 10:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Explain master answerExplain to all of us and meHow is the answerB B B B B B B

Ans 11:

Tanirika Bansal from DPS Faridabad, Faridabad
Class : Class 4
this question is very confusing between a and b pleeeeese master answer explain to us

Ans 12:

Tanirika Bansal from DPS Faridabad, Faridabad
Class : Class 4
how the answer to this is bbbbb it is very confusing between a and b

Ans 13:

Mehvish Khursheed from DPSGV, ghaziabad
Class : Class 5
both A and B correct. Because A cause air pollution ,not water pollution so even A is correct. SOF should do corrections in such questions.

Ans 14:

srijita sen from B.J.E.M school, Bhubaneswar
Class : Class 6
This question's answer is A, not B because, it pollutes the air but not the water.

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Syon from Sentia The Global School, Hyderabad
Subject :NSO    Class : Class 4

Ram, Achin, Divya and Ritu were discussing about a grassland community. The community was made up of grass, antelopes and lions.
       
The children made the following remarks about the grassland community.
Ram : The source of all energy for all the populations in the grassland community, comes directly or indirectly from the Sun.
Achin : The grass population is much greater than the antelope population in order to support the energy needs of the antelope population.
Divya : There will be more lions than antelopes in the grassland community because energy is passed from the antelopes to the lions.
Ritu : Without the grass population, only the antelope population will be affected but not the lion population.
Which of the children made a correct remark?

A Ram only
B Ram, Achin and Divya only
C Ram and Achin only
D All of them


Ans 1:

Manan thorat from Podar powai, Mumbai
Class : Class 4
The answer is C Because ram and achin are correct.

Ans 2:

somesh from Centre point katol road, Nagpur
Class : Class 6
Ccccccçcccccccccccccccccccccccccccçcccćccccc ccccccc ccccccc ccc

Ans 3:

Pragnay Priyadarshi from Quantum Leap School, HYDERABAD
Class : Class 7

Ans 4:

Aaryaman Pradhan from De paul School , Berhampur
Class : Class 5
c

Ans 5:

Priyanshi from Delhi Public School, Gurugram
Class : Class 4
C is the correct answer

Ans 6:

Suhana Kedia from Griffin's international school, Kharagpur
Class : Class 5
Ananjit Chander , there has to be MORE antelopes to support the energy needs of the lions !!!!!!

Ans 7:

R from BHS, Kolkata
Class : Class 6
C

Ans 8:

Anantjit Chander from The Modern School, Sector 85, Greater Faridabad, Faridabad
Class : Class 9
But why is the option (C)? It should be (B)

Ans 9:

Sachin Handore from ,
Class : Class 1

Ans 10:

Shashank Reddy from Gyan Ganga International School, Pune
Class : Class 5
Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.

Ans 11:

Sachin Handore from ,
Class : Class 1

Ans 12:

Aaditva from Vasant Valley School, New Delhi
Class : Class 4

Ans 13: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

The correct answer is C.

Ram and Achin made the correct statements. Divya made an incorrect statement as the antelope population will be much more than the lion population in order to support the energy needs of the lion population. Ritu also made an incorrect statement because without the grass population, both antelope population and lion population will be negatively affected as lion feeds on antelope and antelope feeds on grass.


Ans 14:

Utsavi Priya from DPS RUBY PARK, KOLKATA
Class : Class 8

Ans 15:

Anika S Kumar from Alphabets International school , Chennai
Class : Class 7

Ans 16:

Mihika Talukdar from GARDEN HIGH, KOLKATA
Class : Class 4

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Devansh from asn senior secondary school, delhi
Subject :NSO    Class : Class 3

Ans 1:

Shiven Dinkar from DPS NOIDA Sector 30, Delhi
Class : Class 4
MY DEAR FRIEND ANS IS B SOLUTION'; THE COLUR OF MILK IS WHITE'BUT HERE IT IS WRITTEN RED

Ans 2:

Kashika Goel from DPS Noida, Noida
Class : Class 6
colour of milk is white. Here it is written red means white. We look backwards that means white is red so answer is red

Ans 3:

Shiven Dinkar from DPS NOIDA Sector 30, Delhi
Class : Class 4
MY DEAR FRIEND ANS IS B SOLUTION'; THE COLUR OF MILK IS WHITE'BUT HERE IT IS WRITTEN RED

Ans 4:

Aayman Aamir from DPS NOIDA, Noida
Class : Class 3
Hi my friend The answer is red.

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Arpita from Shakuntala vidyalaya , Chhattisgarh
Subject :NSO    Class : Class 6

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Sriram from DPS Modern Indian school , Doha
Subject :NSO    Class : Class 9

Consider the given statements and select the option which correctly identifies the true (T) and false (F) statements.
(i) Distance is the magnitude of displacement in all cases.
(ii) When a body moves with uniform speed, then the average speed is same as instantaneous speed.
(iii) Average speed is greater than the average velocity if a body is moving in a straight line without reversing its direction.
(iv) When a body moves with constant velocity, the average velocity is zero.


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


why?

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