National Science Olympiad Forum By SOF Olympiad Trainer

Sushil Kumar from dpsnoida, Noida

Subject :NSO Class : Class 6

Observe the given Venn diagram carefully and fill in the blanks by choosing an appropriate option.

	1	2	3	4
A	Falling of trees	Occurrence of rainbow	Growth of plants	Tearing paper into pieces
B	Knitting sweater from wool	Setting of milk to form curd	Making rice puddings	Dissolving sugar in water
C	Expansion of mercury in thermometer	Breaking of glass	Lighting LPG stove	Boiling an egg
D	Filling a water bottle	Melting of ice	Burning of paper	Boiling of water

View All Answers (2)

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

Answer: C 1 : Expansion of mercury in thermometer is a physical change which is reversible as mercury returns to its original position (contracts) on cooling. 2 : Breaking of glass is a physical change which is irreversible as broken pieces of glass cannot be joined back. 3 : Lighting LPG stove involves both physical and chemical changes. When LPG comes out of the cylinder it changes from liquid to gaseous state which is a physical change. Then the gas burns in the air which is a chemical change. 4. Boiling of an egg is a chemical change, liquid egg converts to solid egg having different texture and taste which is irreversible as boiled egg cannot be changed into original liquid form.

Ans 2:

from Gitanjali Public School ,

Class : Class 8

c

Submit Your Answers

Post Your Answer

Sushil Kumar from dpsnoida, Noida

Subject :NSO Class : Class 6

One of the four identical light bulbs in a series circuit has blown off as shown in the figure.

Which of the following statements is correct about the bulbs?

AR will not glow while P, Q and S will glow as before.
BR will not glow while P, Q and S will glow brighter than before.
CR will glow brighter than before while P, Q and S will glow as before.
DAll the bulbs P, Q, R and S will not glow.

View All Answers (1)

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

Answer: D The circuit will not be completed when one of the four bulbs blows off. Hence, all the bulbs P, Q, R and S will not glow

Submit Your Answers

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Subject :NSO Class : Class 5

Given below is the net of a cube. If it is folded, then _______ is opposite to the face marked

A

B

C

D

View All Answers (5)

Ans 1:

Harsh Sobti from the samhita academy, BLR

Class : Class 5

Ans 2:

Dev from Ambassador , Dubai

Class : Class 9

Ans 3:

ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Class : Class 10

C

Ans 4:

Kenisha Tamboli from Mansukhbhai Kothari National School, Pune

Class : Class 6

Ans 5:

CHEERANJIT MOHANTA from MATHOPE, BHUBANESWAR

Class : Class 5

It will be C.

Submit Your Answers

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Subject :NSO Class : Class 5

Read the given table and select the correct statements.

(i) L can be rickets resulting in soft and bent bones.
(ii) M can be calcium required for proper vision.
(iii) N includes green leafy vegetables and fruits like spinach, apples, bananas.
(iv) O is goitre which results in bleeding gums.

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

View All Answers (3)

Ans 1:

Suvan S from Edify School Chikkabanavara, Bangalore

Class : Class 7

Correct option is c.

Ans 2:

Avantika Raj from Delhi Public School, Bengaluru

Class : Class 9

Ans 3:

Ritam Das from BGKV, Kolkata

Class : Class 6

Submit Your Answers

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Subject :NSO Class : Class 5

Study the following statements about sedimentary rocks and choose the correct ones.
(i) These were the first rocks to form on Earth.
(ii) These are formed due to physical and chemical changes in metamorphic rocks.
(iii) These are formed by the deposition of material on the Earth's surface and within water bodies.
(iv) Limestone, sandstone and shale are the sedimentary rocks.

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

View All Answers (0)

Submit Your Answers

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Subject :NSO Class : Class 5

Door knob is an example of _________.

ALever
BWedge
CWheel and axle
DScrew

View All Answers (1)

Ans 1:

ishaan from lvis, noida

Class : Class 5

bruh google says lever

Submit Your Answers

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Subject :NSO Class : Class 5

_________ is the part of lever on which work has to be done.

AEffort
BLoad
CFulcrum
DAll of these

View All Answers (6)

Ans 1:

RC from Vibgyor, Navi Mumbai

Class : Class 6

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 2:

Ritam Das from BGKV, Kolkata

Class : Class 6

Because of the load only we have to give the force. So option B

Ans 3:

Saarth Agrawal from Podar International School , Mumbai

Class : Class 6

It should be A as we apply or put force on the effort then only the load can be lifted so as per me the A is the correct answer

Ans 4:

Nakul Bhasker from National Public School Whitefield, Bangalore

Class : Class 5

Ritam Das, It is A as they asked which is the part WHERE work is done, not BECAUSE OF WHICH part is work done

Ans 5:

Vihaan Patil from Bombay Scottish School, Mahim Mumbai

Class : Class 6

IT IS option A

Ans 6:

Hitanshi Behera from Loyola School , Bhubaneswar

Class : Class 4

i think a someone explain

Submit Your Answers

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Subject :NSO Class : Class 5

In layer 'X' of atmosphere, temperature begins to fall. Layer 'X' is known as cold layer. Thus, layer 'X' is ________.

AMesosphere
BTroposphere
CIonosphere
DStratosphere

View All Answers (2)

Ans 1:

Umair Kamal from GEMS MODERN, DUBAI

Class : Class 8

Ans 2:

Abhigyan Panja from HEMSHEELA MODEL SCHOOL, DURGAPUR

Class : Class 5

NN

Submit Your Answers

Post Your Answer

ARNAV GARG from PRUDENCE SCHOOL, New Delhi

Subject :NSO Class : Class 5

Select the correct statement regarding natural disasters.

AA vent through which magma is released is present in the mantle of the Earth.
BHurricanes are caused by an earthquake on the ocean floor.
CHeat from lava of volcano can cause forest fire.
DThe point under the ground where the earthquake begins is called epicentre.

View All Answers (2)

Ans 1:

vishant mishra cool guy from Deens Academy, Bengaluru

Class : Class 2

Ans 2:

Hitanshi Behera from Loyola School , Bhubaneswar

Class : Class 4

oye balle balle dhe shava shava, balle balle dhe shava shava, pio pio re kava kava gana khatham hua

Submit Your Answers

Post Your Answer

Sushil Kumar from dpsnoida, Noida

Subject :NSO Class : Class 6

Direction: Refer to the given paragraphs to answer question
P is a joint that allows movement in one plane only and shows 180° of movement. The movement of car doors resembles the movement of bones between which this joint is present. This type of joint is found in our body at elbow and in skull. Q joint allows movement in all directions and in more than one plane. This joint controls the movement of the humerus and femur bones. Movement of pestle in a mortar resembles the movement of bones in this joint.

Some of the italicised words are mentioned incorrectly in the paragraphs. Select the correct option regarding them.

AFemur should be replaced by tibia.
B180° should be replaced by 360°.
CMore than should be replaced by only.
DSkull should be replaced by knee.

View All Answers (2)

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

(D) : Hinge joint is present in elbow and knee.

Ans 2: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

(D) : Hinge joint is present in elbow and knee.

User Forum

Ans 1: (Master Answer)

Ans 2:

Ans 1: (Master Answer)

Ans 1:

Ans 2:

Ans 3:

Ans 4:

Ans 5:

Ans 1:

Ans 2:

Ans 3:

Ans 1:

Ans 1:

Ans 2:

Ans 3:

Ans 4:

Ans 5:

Ans 6:

Ans 1:

Ans 2:

Ans 1:

Ans 2:

Ans 1: (Master Answer)

Ans 2: (Master Answer)

Related Links