National Science Olympiad Forum By SOF Olympiad Trainer - Page 780
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AASHIA CHANDRA from MANAV RACHNA INTERNATIONAL SCHOOL, GURGAON
Subject :NSO    Class : Class 7

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Daksh from RKC, Rajkot
Subject :NSO    Class : Class 3

Ans 1:

from ,
Class :
Class:-- Speed Ammonia gas is one of the liquefied by decreasing temperature and increasing pressure.

Ans 2:

Arjun Gourineni from CHIREC International School, Hyderabad
Class : Class 7

Ans 3:

Admin from Revisewise, Noida
Class : Class 3
To liquify ammonia gas the temperature of the gas is reduced. This results into slowing down of the molecules of ammonia. Hence a change in the speed of the particles takes place.

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Dhruv from na, Udaipur
Subject :NSO    Class : Class 6

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Yashi Agrawal from Blue Ridge Public School , Pune
Subject :NSO    Class : Class 8

Ans 1:

Mohak Khetan from Podar International School Powai , Mumbai
Class : Class 8
when the switch was open then the current was flowing through the whole circuit. now when it is closed current will not flow through the whole circuit and will take the shortcut because current always chooses the shortest path. so bulb x will not be lit and bulb y will be brighter.

Ans 2:

Siddharth Mahesh from mdav public school , Hyderabad
Class : Class 8

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Dhruv from na, Udaipur
Subject :NSO    Class : Class 6

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Yashi Agrawal from Blue Ridge Public School , Pune
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is a.

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BHASKAR NANDI from SOUTH POINT SCHOOL, Kolkata
Subject :NSO    Class : Class 6

Ans 1:

Ashwin Shridhar from Vidyashilp Academy, Bangalore
Class : Class 9
The answer Should be B. It shows plant growing against gravity, towards light. The apparatus does not indicate difference in transpiration.

Ans 2:

Jairaj Singh Basur from Vivek High School, Chandigarh
Class : Class 8
it should not be A because there is no method shown to see the amount of transpiration, but it shows that even though it is upside down the root grows towards gravity and the shoot grows upwards towards light so it should be B

Ans 3:

anahitaa Malhotra from delhi public school gandhinagar gujarat, Ahmedabad
Class : Class 4
answer should be d.

Ans 4:

Pratyush from GMA Dubai, Dubai
Class : Class 7
answer is D

Ans 5:

Pratyush from GMA Dubai, Dubai
Class : Class 7
It is A as gravity is pulling the shoot lower though still plant grows upwards against atmospheric pressure .

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ravi agarwal from sainik school , Bijapur
Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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ravi agarwal from sainik school , Bijapur
Subject :NSO    Class : Class 8

The given figure shows a typical animal cell with its components labelled as 'a – j'.

Identify the labelled components and select the incorrect statement regarding them.

AThe organelles 'e', 'h', 'g' and 'i' are membranebound structures which function in close coordination with one another.
B'f' organelle is responsible for the synthesis of fats inside the cells and it stores Ca2+ for release during muscle contraction.
C'a' and 'b' are selectively permeable membranes.
D'j' is the site for protein synthesis. It allows hereditary message from 'd' to get translated into proteins.


Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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ravi agarwal from sainik school , Bijapur
Subject :NSO    Class : Class 8

A student examined a particular plant cell through its various stages of growth. After making various measurements, he realised that the increase in cell size was largely due to enlargement of the central vacuole rather than an increase in the amount of cytoplasm. Why might this be an advantageous strategy for the cell?

AEnlarging the cytoplasm would make the cell less turgid.
BEnlarging the vacuole would make it unnecessary for the cell wall to stretch.
CEnlarging the vacuole would minimise any lowering of the surface area - volume ratio of the cytoplasm.
DAll of these


Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is C.

Ans 2:

Ankit kumar Jha from Ryan International School , Ghaziabad
Class : Class 9

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