National Science Olympiad Forum By SOF Olympiad Trainer - Page 653

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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


Ans 1: (Master Answer)

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:

Class : Class 8
c

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Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

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

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7

Ans 2:

Class : Class 5
It will be C.

Ans 3:

Class : Class 10
C

Ans 4:

Class : Class 5

Ans 5:

Class : Class 6

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8

Ans 2:

Class : Class 6

Ans 3:

Class : Class 7
Correct option is c.

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 4
i think a someone explain

Ans 2:

Class : Class 6
IT IS option A

Ans 3:

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 4:

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 5:

Class : Class 6
Because of the load only we have to give the force. So option B

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
NN

Ans 2:

Class : Class 8

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8

Ans 2:

Class : Class 4
oye balle balle dhe shava shava, balle balle dhe shava shava, pio pio re kava kava gana khatham hua

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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.


Ans 1: (Master Answer)

Class : Class 1
(D) : Hinge joint is present in elbow and knee.

Ans 2: (Master Answer)

Class : Class 1
(D) : Hinge joint is present in elbow and knee.

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