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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7

Ans 2:

Class : Class 6

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Subject :NSO    Class : Class 8

Pranav, a class VII student collected some China rose petals and placed in a beaker. To this he added some warm water, kept it for some time and then he used this coloured water as an indicator. He collected few samples and tested them with China rose indicator. Which of his observations was/were not correct?
      Sample                     Effect on adding China rose indicator
(i) Soap solution                Turns green
(ii) Curd                             No change
(iii) Soft drink                    Turns dark pink
(iv) Antacid tablet              Turns green

A(i) and (ii)
B(ii) only
C(ii), (iii) and (iv)
D(i) and (iii)


this question's answer according to the sofolympiad trainer website is option C. the answer given by the website is wrong, isn't it?

Ans 1:

Class : Class 8
It should be b

Ans 2:

Class : Class 8
I think the answer which they told is wrong. The ans should be B.

Ans 3:

Class : Class 5
yes answer should be B

Ans 4:

Class : Class 8
B is correct antacids are basic since they are made for curing stomah acidity so it will turn the indicator to green.

Ans 5:

Class : Class 8
The correct option is B.Because curd is acidic and the indicator should have changed to dark pink color.

Ans 6:

Class : Class 7
Answer should be b

Ans 7:

Class : Class 10
Any link with Lopamudra Raut? :-)

Ans 8:

Class : Class 9
it should be B as antacids are basic, and they will turn china rose to green

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
X can be the harmful and toxic wastes.so as they are released and again gain concentration,the quantity of aquatic animals decrease.Otherwise it was on an increase as the pollution was discharged.

Ans 2: (Master Answer)

Class : Class 1
The correct answer is D.

Ans 3:

Class : Class 8

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Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

Ans 2:

Class : Class 8

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Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
Option A.

Ans 2:

Class : Class 6

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
The answer is Bbecause A is a Maharashtrian , C is gujurati , D is bengali and B is punjabi which does not live near coastal areas

Ans 2:

Class : Class 7
b

Ans 3:

Class : Class 4
Yes it is B

Ans 4:

Class : Class 3
answer shd be k

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
Syrup (C) is the correct answer as the other two items are solids, whereas syrup is a liquid. First set is all liquids and third set is all gasses.

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D. The options come in pairs in the body.

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Subject :NSO    Class : Class 5

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