Charu Gupta
from
DPS Faridabad, Faridabad
Subject :NSO Class : Class 7
Rahul took a turmeric paper and tried to draw flowers on it with the help of cotton buds dipped in solutions P and Q. The flower drawn with solution P was not visible while one drawn with solution Q turned red.
Solutions P and Q could be respectively
A Lime water and lemon juice
B Vinegar and soap solution
C Common salt solution and baking soda
D Both and (C).
Ans 1:
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yash kirpalani
from
st gregorios high school chembur, Mumbai
Class : Class 7
the last option is incomplete
the complete option should be Both B and C
Ans 2:
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rethish
from
Veltech, Avadi
Class : Class 3
Turmeric indicator remains yellow in acidic (vinegar) and neutral solutions (common salt solution) and turns red in basic solution (soap solution and baking soda).
Ans 9:
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Arnav Raj Sharma
from
GEMS International School the ultra master mega, Gurgaon
Class : Class 7
please explain
Ans 12:
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PS Gour
from
Chirec international schoo The best 30 years and beyond, Hyderabad
Class : Class 7
the last option is not understandable
Ans 14:
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Aryan Keswani
from
Delhi Public School, Mathura Road, New Delhi
Class : Class 10
Yes,it is wrong. Incomplete option
Ans 15:
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Shourya Bhushan
from
DPS Gurgaon, Gurgaon
Class : Class 7
They have not written: Both B and C in the D option. Whereas, B is important in the D option.
Ans 19:
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Ans 20:
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Hamsavarshini Swaminathan
from
St Anns Senior Secondary School, Roorkee
Class : Class 10
D IS INCOMPLETE OPTION.