National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 6

Which of the following statements are incorrect?
(i) A bag placed below the seat of a moving bus is in motion with respect to the floor of the bus.
(ii) While measuring length of an object using a metre scale, use the zero-mark even if the ends are worn out.
(iii) Blinking of eyes is an example of periodic motion.
(iv) If a body as a whole moves around in a circular path, the motion is known as revolution.

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


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Subject :NSO    Class : Class 6

Nisha and Neha were playing together on a street where they accidentally collided with each other and fell down. After that, Neha started feeling pain in her elbow and could not bent it easily. Nisha also developed discomfort in one of her wrists and had difficulty in writing. They visited doctor who told them that their joints were injured. Identify their injured joints and select the correct option regarding them.

Nisha Neha
A Injured joint is the type of joint also present between metacarpal and carpal of thumb. Injured joint is the type of joint also present between skull and first vertebra of backbone.
B Injured joint is the type of joint also present between upper arm and forearm. Injured joint is the most freely movable joint of body.
C Injured joint is the type of joint also present between tarsal bones. Injured joint allows movement primarily in one plane.
D None of these


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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
who says that printer produces sound energy. laser printers dont make any sort of sound. and if you dont agree than see this, oven produces sound and not only that, but, almost all machines produce sound.

Ans 2:

Class : Class 6
answer is c

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Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1

D

Venus is the hottest planet. Although Mercury is situated closer to Sun than Venus but Venus’s carbon dioxide rich atmosphere causes its days to be warmer than those of Mercury.


Ans 2:

Class : Class 4
D is the answer to this question

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1

A

The animal shown in the image is a sheep and it's fleece is used for making woolen socks and gloves.


Ans 2: (Master Answer)

Class : Class 1

A

The animal shown in the image is a sheep and it's fleece is used for making woolen socks and gloves.


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Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Class : Class 1

D

When the key K is closed, an electric current starts flowing in the circuit . The current which passes through bulb P gets divided  in bulbs Q and R. For the identical bulbs , the brightness will depend upon the current flowing through the bulbs,So P will glow brighter than Q and R .


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Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Class : Class 1

B

Transparent objects allow the light to pass through it completely , while the translucent passes the light partially .

An object is categorised as opaque if it completely blocks the light falling on it.

Hence, B is the correct option.


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Subject :NSO    Class : Class 6

Soham was given a mixture of camphor, iron filings, sawdust and salt.
Which of the following represents the correct sequence of steps to separate all the components of this mixture?

A Winnowing, filtration, separating funnel and magnetic separation
B Sedimentation and decantation, heating, filtration and evaporation
C Magnetic separation, heating, filtration and evaporation
D Sedimentation and decantation, handpicking, filtration and evaporation


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Subject :NSO    Class : Class 5

Refer to the given flow chart and select the incorrect option.


APart P will help a student think, learn and recall her lessons.
BPart Q will help a child to learn the art of riding a bicycle.
CPart R controls our breathing and heartbeat even when we are asleep.
DPart Q will help a person retract his hand when touched by a hot object.


now this is wron' 'cause i, option D it is written part Q but in the solution it's written par' Q plz correc' thi'

Ans 1:

Class : Class 5
wrong question

Ans 2:

Class : Class 5
wrong!!!!!!! BLUNDER BY SOF!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
not available to identify

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