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Subject :NSO    Class : Class 7

Three test tubes are set up as shown. The indicator used here changes from red to yellow when exposed to increased levels of carbon dioxide. At the start of the experiment, the indicator in each test tube was red.


What will be the colour of the indicator in each test tube after two hours?

a b c
A Yellow Yellow Red
B Red Yellow Red
C Yellow Red Red
D Yellow Yellow Yellow


Please explain how the test tube with insects will turn yellow.

Ans 1:

Class : Class 7
Hello. And Bye.

Ans 2:

Class : Class 9
hello everyone thanks for approve

Ans 3:

Class : Class 9
Ciao a tutti vengo dall'italia

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 4
HI, If you unscramble SECIIUDOL it gives DELICIOUS. Thanks, Anamkhan

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 2
bear is a plant eater and animal eater,,bear eats fish and instects

Ans 2:

Class : Class 2
D

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
ans:none of these 365 days 6 hours

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
It is D, oscillatory and circular.

Ans 2:

Class : Class 6
i think it should be rotational motion ,but among these options ,i think it will be d

Ans 3:

Class : Class 6

Ans 4:

Class : Class 6
OSCILLATORY

Ans 5:

Class : Class 6
the answer is circular and oscillatory

Ans 6:

Class : Class 6
Rectilinear

Ans 7:

Class : Class 6
Should be d

Ans 8:

Class : Class 7
answer should be D. Both Circulatory and Oscillatory.

Ans 9:

Class : Class 7
Shouldn't the answer be D - Circular and oscillatory

Ans 10:

Class : Class 6
Rectilinear

Ans 11:

Class : Class 6
Option'D'.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 4
Its d

Ans 2:

Class : Class 6
Ans is D

Ans 3:

Class : Class 7
the answer is wrong

Ans 4:

Class : Class 6
A IS WRONG

Ans 5:

Class : Class 6
the answer is d

Ans 6:

Class : Class 6

Ans 7:

Class : Class 6
ha

Ans 8:

Class : Class 6

Ans 9:

Class : Class 7

Ans 10:

Class : Class 7
I guess it should have been A.

Ans 11:

Class : Class 7
It should be (D).

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
R

Ans 2:

Class : Class 6
glass is an insulator and the part P is made of glass due to this Q , R, S are the wrong answer

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 10
Mycobacterium tuberculosis is the causative organism of tuberculosis

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
B

Ans 2:

Class : Class 3

Ans 3:

Class : Class 5
b

Ans 4:

Class : Class 3
B

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