National Science Olympiad Forum By SOF Olympiad Trainer - Page 208
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Ayaan jamal from Dddddd, Delhi
Subject :NSO    Class : Class 8

Which of the following statements are correct?
(i) Cochineal insect is used to eliminate Opuntia.
(ii) Water logging decreases the amount of salts in the soil that increases soil fertility.
(iii) Fertilisers are not readily soluble in water, so they are absorbed by the plants slowly.
(iv) Rust of wheat is a fungal disease.
(v) The practice of growing two or more dissimilar crops in the same field one after the other is called mixed cropping.

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


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Ayaan jamal from Dddddd, Delhi
Subject :NSO    Class : Class 8

Ans 1:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
how come?

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Shuvangi Das from Vivekananda mission school, haldia
Subject :NSO    Class : Class 6

Ans 1:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Yes, Srijan from VIBGYOR HIGH Bangalore, you are right SOF why you are doing this????

Ans 2:

Ayan Vohra from Bhavan Vidyalaya Junior, Chandigarh, chandigarh
Class : Class 6
it is saying NOT you little dum dums

Ans 3:

Sai Srivardhan from Maharishi Vidya Mandir Chetpet, Chennai
Class : Class 9
no

Ans 4:

Srijan Anand from VIBGYOR HIGH, Bangalore
Class : Class 7
the right answer is b, sof too tell it in its explanation

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Shuvangi Das from Vivekananda mission school, haldia
Subject :NSO    Class : Class 6

Which of the following statements are incorrect?
I. A bag placed below the seat of a moving bus is in motion with respect to the floor of the bus.
II. While measuring length of an object using a metre scale, use the zero-mark even if the ends are worn out.
III. Blinking of eyes is an example of oscillatory motion.
IV. If a body as a whole moves around in a circular path, the motion is known as revolution.

AI, II and IV only
BI, II and III only
CII, III and IV only
DI, III and IV only


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Ojaswi from SAINT JOHNS CONVENT SCHOOL LANSDOWNE, DELHI
Subject :NSO    Class : Class 6

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anu from Haralur, Bengaluru
Subject :NSO    Class : Class 1

Ans 1:

vihana from vidyashilp school, banglore
Class : Class 4
b

Ans 2:

Shaurya vardhan agarwal from Calcutta International School , Kolkata
Class : Class 1
b

Ans 3:

anu from Haralur, Bengaluru
Class : Class 4
b

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anu from Haralur, Bengaluru
Subject :NSO    Class : Class 1

Ans 1:

from ,
Class :

Ans 2:

Shourya Pratap from Daffodils English medium school, Gwalior
Class : Class 8

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SAMARPAN DAS from Notre Dame Academy, Salakati Kokrajhar
Subject :NSO    Class : Class 2

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anu from Haralur, Bengaluru
Subject :NSO    Class : Class 1

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y rahaav karthikeyan from the indian public school, TIRUCHENGODE
Subject :NSO    Class : Class 9

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