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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
sea snakes also breathe through skin so option 1 should also be correct.

Ans 2:

Class : Class 7

Ans 3:

Class : Class 6
you are correct Pragun goel . my answer is also a.

Ans 4:

Class : Class 5
a and c both are correct answers

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

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Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1
Molars and Premolars are mainly used to chew the food.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
The solution: Enzyme X works best and increases the rate of reaction at an acidic pH (less than 7) of about two2️⃣ ! Enzyme Y is very very very very very very very very very very very very very very very very very efficient @ slightly acidic pH i.e., slightly less than seven!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Enzyme Z is most efficient at an alkaline pH (more than 7!!!). And alkali means a base which is soluble in water. In humans, gastric juice of stomach (a J-shaped bag with thick inner walls. Meh.) has pH in the range of 1.5-2.5, where enzymes such as pepsin, rennin etc. carry out the digestion of food. Thus, enzyme X can be found in stomach. Similarly, the saliva in the mouth of humans has sliiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiightly acidic pH of 6.8, where salivary amylase enzyme is moooooooooooooooooooooooooooooooooooooooost effective! Thus, enzyme Y can be found in the buccal cavity. Small intestine has slightly alkaline pH of 7.8, where enzymes such as trypsin help in digestion of food. So, enzyme Z can be found in duodenum. Morus Alba is the scientific name of mulberry.

Ans 2:

Class : Class 7

Ans 3:

Class : Class 3
such questions r always confusing.................

Ans 4:

Class : Class 7

Ans 5:

Class : Class 7

Ans 6:

Class : Class 7

Ans 7:

Class : Class 7
Is D. ✔

Ans 8:

Class : Class 3

Ans 9:

Class : Class 7

Ans 10:

Class : Class 7

Ans 11:

Class : Class 7

Ans 12:

Class : Class 7
Can someone pls send the explanation of why it's D🙏

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Subject :NSO    Class : Class 4

Refer to the given paragraph and table and answer the following questions.
Neha took 100 gm each of three types of soil, X, Y and Z, in three separate pots with hole at the bottom. The amount of water that was poured in the soil pot, just before it started dripping from the bottom hole, is tabulated here.

The soil that is mixture of clay, sand, humus and is usually very good for growth of most plants is __________.

A X
B Y
C Z
D Cannot be determined


Ans shd be D (Cannot be determined)

Ans 1:

Class : Class 3

Ans 2:

Class : Class 5
B IS THE ANSWER ANURADHA NAIR 4C

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 3

Ans 2:

Class : Class 5
Chloro-fluro-carbon

Ans 3:

Class : Class 4
I think the answer should be CFC but it is not in the options only.But I also think that it is CO2.

Ans 4:

Class : Class 1
It should be CFCS

Ans 5:

Class : Class 7

Ans 6:

Class : Class 5
The answer is B as when we use electricity fuel gets burnt and so it produces carbon dioxide.

Ans 7:

Class : Class 5
The answer was supposed to be CFC .

Ans 8:

Class : Class 6
The correct answer should be CFC

Ans 9:

Class : Class 6

Ans 10:

Class : Class 5
Actually it is b ,as a is CNG(compressed natural gas which is a energy source that is not a greenhouse gas

Ans 11:

Class : Class 4
CFCS should be correct answer but I got it right

Ans 12:

Class : Class 4
how the released gas from refrigerator is CO2

Ans 13:

Class : Class 3
the correct answer is CFCs .but is not mention in the option.

Ans 14:

Class : Class 6
THE OPTION SHOULD HAVE BEEN CFC OR WE CAN TAKE THE OPTION D [NITROGEN] BUT IT IS SHOWING WRONG

Ans 15:

Class : Class 4
the ans should be CFC

Ans 16:

Class : Class 6
I GOT IT CORRECT

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 5
ans is D

Ans 2:

Class : Class 4

Ans 3:

Class : Class 6
the answer is d

Ans 4:

Class : Class 6
answer is clearly a

Ans 5:

Class : Class 7
master answwer really

Ans 6:

Class : Class 6
a

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