National Science Olympiad Forum By SOF Olympiad Trainer

Divit omar from Swaraj India Public School, Kanpur

Subject :NSO Class : Class 5

Study the given table and select the incorrect option regarding W, X, Y and Z.

AW could be an animal that has six legs, is oviparous and has different stages in its life cycle.
BX and Z are warm blooded animals where X is always oviparous whereas Z may be viviparous or oviparous.
CY could be a cold blooded, oviparous, aquatic animal like seal or arowana.
DW could be moth, X could be nightingale, Y could be Scoliodon and Z could be rat.

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Devashish Pandey from DPS, Gautam Buddha Nagar

Subject :NSO Class : Class 7

As shown in the given circuit diagram, two identical heaters H₁ and H₂ are connected in series. Initially, switch S₁ is closed and switch S₂ is open and the reading of the ammeter and voltmeter are being recorded. Which one of following options correctly represents the changes in the readings of ammeter and voltmeter if switch S₂ is closed after some time?

	Ammeter reading	Voltmeter reading
A	Decreases	Decreases
B	Increases	Decreases
C	Increases	Increases
D	Decreases	Increases

The circuit diagram is not given

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Ans 1:

Rohan A Gowda from Jnana Sagara International Public School, Channarayapatna

Class : Class 7

Ans 2:

Rohan A Gowda from Jnana Sagara International Public School, Channarayapatna

Class : Class 7

There Is no image or circuit diagram in the question.

Ans 3:

Arin Majumdar from Delhi Public School Bangalore South, Bangalore

Class : Class 8

where is the image in this question?

Ans 4:

Viraaj from Mount litera zee school, Hyderabad

Class : Class 7

no diagram sof fix this

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Aradhya Shankar from Vibgyor, Kolhapur

Subject :NSO Class : Class 3

Few objects have been classified into two groups on the basis of a particular characteristic as shown in the table. Identify the characteristic and select the correct option.

AElasticity
BElectric conductivity
CWaterproof nature
DFloating ability

ccc

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Ans 1:

Shree Sinha from Seth Anandram Jaipuria , Patna

Class : Class 3

C

Ans 2:

Aradhya Shankar from Vibgyor, Kolhapur

Class : Class 4

c

Ans 3:

Risha Maithani Chaurasia from Euro School Kharadi, Pune

Class : Class 3

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Samith Ramesh from National public school East, Bangalore , Bangalore

Subject :NSO Class : Class 6

Anant took four different types of crushed food samples I, II, III and IV in four different test tubes. He then added Benedict's solution to each one of them and heated for one minute. The final colour in each one of the test tubes is given in the chart below.

Which among the given food items have sugar present in them?

AI and II only
BIII and IV only
CII and III only
DI and III only

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Ayaan Ali from Don Bosco , Kolkata

Subject :NSO Class : Class 2

Aman is blind-folded and he is asked to differentiate some pairs of items. Which of the following pairs of items can he differentiate? Aman

(A) A glass of orange juice and a glass of plain water.
(B) A piece of red and a piece of blue cloth.
(C) A round ball and a rectangular box.
(D) An empty piggy bank and a piggy bank with some coins in it.

A (A) and (D) only
B (B) and (C) only
C (A), (C) and (D) only
D (A), (B), (C) and (D)

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Divit Soni from Sapphire International School, Noida

Subject :NSO Class : Class 3

In which season the given flower is available in plenty? Sunflower (a). Summer (b). Winter (c). Monsoon (d). Autumn

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Aurinjay Mukhopadhyay from Future Foundation School, KOLKATA

Subject :NSO Class : Class 4

Lugda is associated with which among the following Indian states?

AWest Bengal
BMaharashtra
CNagaland
DPunjab

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Aurinjay Mukhopadhyay from Future Foundation School, KOLKATA

Subject :NSO Class : Class 4

Select the INCORRECT option.

AMetal is lustrous and is used for making utensils.
BWood is opaque and elastic, and is used for making furniture.
CMarble sinks in water and is a bad conductor of electricity.
DGlass is brittle and is non-magnetic.

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Nabhya Sinha from DPS, Vadodara

Subject :NSO Class : Class 8

A candle flame is placed in between two charged plates as shown in the given figure. Which of the following diagrams best represents the shape of flame?

A
B
C
D