National Science Olympiad Forum By SOF Olympiad Trainer

Bhavik Bhat from The Gurukul Foundation School, Kashipur

Subject :NSO Class : Class 6

Five boys are standing in a row facing East. Mohit is to the left of Sameer, Tushar and Samrath. Sameer, Tushar and Samrath are to the left of Aman. Samrath is between Sameer and Tushar. If Tushar is fourth from the left, how far is Sameer from the right?

AFirst
BSecond
CThird
DFourth

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Yakshita Rathor from Divine Child, Mumbai

Subject :NSO Class : Class 9

Identify X in the given statement and select the correct option regarding it. "When soil is completely saturated with water and excess water accumulates around plant roots in the field, the condition is referred to as X". X could damage crops because

AIt reduces air spaces between soil particles
BIt cuts off oxygen supply to roots hence, they are not able to breathe
CIt increases amount of salt in the soil and reduces its fertility
DAll of these.

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

D

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Yakshita Rathor from Divine Child, Mumbai

Subject :NSO Class : Class 9

The matrix of bone is in the form of thin concentric rings, called _______. Bone cells, called _______ are present in fluidfilled spaces called _______. These fluid filled spaces of the bone communicate with each other by network of fine canals, called _______. Select the correct sequence of words to complete the above passage.

ALacunae, Osteoblasts, Lamellae, Canaliculi
BLamellae, Osteocytes, Lacunae, Canaliculi
CLamellae, Chondrocytes, Canaliculi, Lacunae
DLacunae, Adipocytes, Canaliculi, Sarcoplasm

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

B

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Hamzah Inamdar from SHARDA ENGLISH SCHOOL KAIJ DIST BEED, KAIJ

Subject :NSO Class : Class 3

Roy wants to make a list of actions that show friction produces heat. Which of the following could he include in his list?
(A) Rubbing hands together
(B) Scratching a match stick against the box
(C) Sawing wood
(D) Drilling a hole into metal sheet
(E) Rubbing off some pencil marks with an eraser

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

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Ans 1:

SS from meridian, hyderabad

Class : Class 5

yes or no ????????????????

Ans 2:

Hamzah Inamdar from SHARDA ENGLISH SCHOOL KAIJ DIST BEED, KAIJ

Class : Class 4

Sawing wood means Seeing wood then how it cause friction of heat.

Ans 3:

Kartikey Kumar Jindal from Dikshant International School, Zirakpur

Class : Class 5

The correct answer is c part.All the statments are correct

Ans 4:

Aarvi Gosai from The New Tulip International School, London

Class : Class 4

WRONGGGGGGGGGGGGG

Ans 5:

Tejas Nandigama from NATIONAL PIBLIC SCHOOL , Bengaluru

Class : Class 4

Ans 6:

Kartikey Kumar Jindal from Dikshant International School, Zirakpur

Class : Class 5

The correct answer is c part.All the statments are correct

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Syed Mohammad Hussain from ISAM, Muscat

Subject :NSO Class : Class 3

Rashmi took three troughs each containing equal amounts of soil taken from different locations. Rashmi poured 500 mL of water gently onto the soil in each trough. Her observation after 30 minutes is shown in the given figure.

According to the observations, which trough contains soil that is the most likely to be found at the base of a pond?

A Soil in trough E because it absorbed the most water.
B Soil in trough F because it absorbed the most water.
C Soil in trough G because it absorbed the least water.
D Soil in trough E because it absorbed the least water.

IT IS HELL

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Ans 1:

Kashika Goel from DPS Noida, Noida

Class : Class 7

Ans 2:

Manaswini Aradhyula from Silver Oaks International , Bengaluru

Class : Class 5

its wrong answer, clayey soil absorbs more water, sandy soil absorbs least ,the answer should be option B

Ans 3:

Kashika Goel from DPS Noida, Noida

Class : Class 7

Ans 4:

Kashika Goel from DPS Noida, Noida

Class : Class 7

Ans 5: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

D

Clayey soil is found at the base of a pond. Trough E contains clayey soil that absorbs least water.

Ans 6:

Kashika Goel from DPS Noida, Noida

Class : Class 7

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ANWESHA THAKUR from DPS SECTOR 132 NOIDA, NOIDA

Subject :NSO Class : Class 4

Earth rotates on its own __________. It takes ___________ hours for one rotation. It also revolves around the Sun. It takes approx _________ days to complete one revolution. Select the correct option to complete the above paragraph.

AAxis, 48, 360
BAxes, 24, 365
CAxis, 24, 365
DAxes, 48, 360

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Ans 1:

ANWESHA THAKUR from DPS SECTOR 132 NOIDA, NOIDA

Class : Class 7

Ans 2:

Parikshit G from DPS Panvel, NAVI MUMBAI

Class : Class 8

It is c not b, if you see closely the spelling of axis in b it is axes and in c it is axis

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AHAAN CHAUDHARY from DPS SEC 30 NOIDA, Noida

Subject :NSO Class : Class 2

The traffic police officer is signalling to stop vehicles approaching from _________.

A Behind
B Front
C Left and right sides
D Both (A) and (B)

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

D

The given signal is to stop approaching vehicles simultaneously from front and behind.
To stop vehicles approaching from front the traffic police officer raises his right hand only while his left hand is stretched on his side for vehicles coming from behind.

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Omar from International Indian Public School, Riyadh

Subject :NSO Class : Class 2

Can I know how can I download the materials for which I have made the payment. I can't see this under the download option.

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harry potter from hogwarts, hogsmeade

Subject :NSO Class : Class 6

Read the given statements and select the correct option.
Statement 1 : A car can run on road because of force applied by road on the car.
Statement 2 : Friction provides the necessary force for translatory motion for a car starting from rest.

ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true and statement 2 is false.
DStatement 1 is false and statement 2 is true.

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Ans 1:

Snigdha swaminath from Christ nagar higher secondary school , Trivandrum

Class : Class 7

Ans 2:

Seshasayee sudharsan from PSBB Learning Leadership Academy, Bangalore

Class : Class 6

the answer is A

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Anhiti Mandal from Shri Ram School, Gurgaon

Subject :NSO Class : Class 6

Read the given paragraph. is the swollen portion at the base of the pistil and it extends above as a thin long structure called , which ends in a knob-like structure at the tip called .
Select the option that correctly fill in the blanks in the above paragraph.

              X                 Y                 Z
AOvule          Ovary           Stigma
BOvary           Stigma          Style
COvaryv         Style             Stigma
DOvule           Stigma          Ovary