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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9
state of rest is equilibrium so answer is when resultant force is zero

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 7

Which of the following statements is false regarding physical and chemical properties?

A The composition of matter need not be changed for observing a physical change.
B During a chemical reaction, molecules undergo a change and their concentration keeps decreasing along with time.
C Chemical property is the ability of matter to undergo some chemical change because of its composition.
D During a chemical reaction, same molecules are present throughout the change.


Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
Sakshi's experiment was realllly interesting !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! The ans is [ C ]

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
Option b

Ans 2:

Class : Class 7
Option b

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
But it could be a washing factory in which soap water is thrown out. This will make soil basic.

Ans 2:

Class : Class 10
It is mentioned that the landowner has decided to use one of his fields which had 'factories' for several years. So it is considered that chemicals from these factories make the soil acidic...

Ans 3:

Class : Class 7
Factories in general means "manufacturing units" so we can consider that the waste water which is thrown out can be acidic in nature.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
OK thanks to tell my mistake especially in this question which was confusing and nice too..

Ans 2:

Class : Class 5

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Subject :NSO    Class : Class 5

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