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Subject :NSO    Class : Class 7

Kirti kept a metal spoon in a glass jar filled with pickle for a few days. She observed that there were holes in the spoon. What could be the possible reason for this?

A Oil present in pickle dissolves the metal.
B Oil present in pickle liberates a gas in which metal gets dissolved.
C Metal reacts with acid present in pickle to form salt hence, metal gets dissolved.
D The glass reacts with metal to give acid which dissolves the metal.


i didnt get this . answer says acid reacts with metal to form salt but acid reacts with metal to form hydrogen can you help me ?

Ans 1:

Class : Class 7
C Metal reacts with acids

Ans 2:

Class : Class 7
C Metal reacts with acids

Ans 3:

Class : Class 7
answer is C

Ans 4:

Class : Class 7

Ans 5:

Class : Class 7
Answer is C as metal react with acid to form salt and hydrogen both

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
It started in '1973', NOT in '1927' you have got your reference wrong. The question says 1974 which is a year wrong so I think they made a mistake while preparing the questions.

Ans 2:

Class : Class 3
richa is also wrong as chipko movement started in 1927

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 6

Ans 2:

Class : Class 3
A

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Subject :NSO    Class : Class 10

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
A) Colder, Warmer

Ans 2:

Class : Class 4

Ans 3:

Class : Class 4
the correct answer is a

Ans 4:

Class : Class 2

Ans 5:

Class : Class 8

Ans 6:

Class : Class 5
wierdo

Ans 7:

Class : Class 4
A is the correct answer

Ans 8:

Class : Class 4

Ans 9:

Class : Class 6
A)COLDER ,WARMER

Ans 10:

Class : Class 8
A is correct answer!.

Ans 11:

Class : Class 2

Ans 12:

Class : Class 5
a

Ans 13:

Class : Class 7

Ans 14:

Class : Class 5

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
A

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 6

Small populations of three types of organisms X, Y and Z were kept in captivity. Plenty of plants were present in that area.
The change in the population of these organisms with time was plotted in the graph as shown here.

Which of the following conclusion is incorrect regarding their eating habits?

A X could be a carnivore that feeds on Z but not on Y.
B Both X and Y could be herbivores and Z could be a carnivore whose population declines as it does not prey on both X and Y.
C If X and Y are herbivores, then X has higher reproductive potential than Y.
D None of these


Ans 1:

Class : Class 7
please provide solution for the question

Ans 2:

Class : Class 6
it should be b, right?

Ans 3:

Class : Class 6
How is it D??

Ans 4:

Class : Class 8
It shouldn't be D

Ans 5:

Class : Class 6
sssssoooooooooollllluuuuuuuuuutttttiiiiiiiiiioooooooooonnnnn

Ans 6:

Class : Class 6
Give the solution please. how is it D??????????? I think it is B...

Ans 7:

Class : Class 9

Ans 8:

Class : Class 8
How is the answer D??????????????????????????

Ans 9:

Class : Class 6
It is d only u fool

Ans 10:

Class : Class 10
how is the answer D. If u do not send a proper solution then did means u do not know this yourself and u just put this question because u just wanted and just wanted to leave us blank and im pretty sure u guys just chose a random answer

Ans 11:

Class : Class 9
please provide the solution

Ans 12:

Class : Class 6
please provide the solution

Ans 13:

Class : Class 6
How is the answer D It should be something else

Ans 14:

Class : Class 10
how is it D ??????????????????????????

Ans 15:

Class : Class 7
solution please

Ans 16:

Class : Class 6
Please provide solution ........ How is the ans D ???

Ans 17:

Class : Class 9
he ans is D because X is not a herbivore , so option B

Ans 18:

Class : Class 6

Ans 19:

Class : Class 9
Please provide solutionHow can it be d???????????????????????????????????????????????????????????????????????

Ans 20:

Class : Class 7
how is the answer D???????????

Ans 21:

Class : Class 9
Please give solution of this question.............

Ans 22:

Class : Class 8
Not at all

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 9
Answer:C

Ans 2:

Class : Class 8
C I think

Ans 3:

Class : Class 3
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Ans 4:

Class : Class 8

Ans 5:

Class : Class 7
a

Ans 6:

Class : Class 5
Its A

Ans 7:

Class : Class 3
Yes... answer is both A

Ans 8:

Class : Class 8
Answer will be D only. Plastic may or may not be flexible. It depends upon type of plastic.

Ans 9:

Class : Class 3
Answer can be A and D

Ans 10:

Class : Class 7
A

Ans 11:

Class : Class 5
Answer is option C....

Ans 12:

Class : Class 3

Ans 13:

Class : Class 3
how

Ans 14:

Class : Class 7
IT IS C.......................................................................................................................................................

Ans 15:

Class : Class 8
Answer can be both A and D

Ans 16:

Class : Class 7
IT IS C

Ans 17:

Class : Class 8
the correct answer is A.

Ans 18:

Class : Class 6
You haven't red the question carefully

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