National Science Olympiad Forum By SOF Olympiad Trainer - Page 426

User Forum

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
B

Ans 2:

Class : Class 4

Ans 3:

Class : Class 7
D

Ans 4:

Class : Class 4
d is the answer

Ans 5:

Class : Class 3
B

Post Your Answer

Subject :NSO    Class : Class 4

Post Your Answer

Subject :NSO    Class : Class 6

Read the given statements and select the correct option
Statement 1 : The rainwater flows down the mountain slopes, leaving very little water for the trees to absorb.
Statement 2 : To conserve water, the leaves of the pine trees are needle-like to reduce the loss of water due to evaporation.

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.
DBoth statements 1 and 2 are false.


Ans 1:

Class : Class 6
wrong

Ans 2:

Class : Class 7
asdfghjklz

Ans 3:

Class : Class 7
it is a!!!!

Ans 4:

Class : Class 6

Ans 5:

Class : Class 6
Answer A is correct

Ans 6:

Class : Class 7
C

Ans 7:

Class : Class 7

Ans 8:

Class : Class 6
asdfghjkl;

Ans 9:

Class : Class 6

Ans 10:

Class : Class 6

Post Your Answer

Subject :NSO    Class : Class 6

Which of the following statements are correct?.
(i) The process of making yarn from fibres is called as spinning.
(ii) Ginning is the process by which harvested cotton is dried and fibres are separated from their seeds.
(iii) Jute is a biodegradable fibre and replenishes earth's nutrients.
(iv) Jute fibres are composed primarily of cellulose only.

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


jute fiber is composed of cellulose and lignin.info;https://en.wikipedia.org/wiki/Jute Jute fibers are composed primarily of the plant materials cellulose and lignin.2nd paragraph 1st line ending

Ans 1:

Class : Class 7
C

Ans 2:

Class : Class 6

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 10
C,as the wheat plants decrease in number.

Ans 2:

Class : Class 7
In a field research, some rats were kept in a wheat field. Their presence in the wheat field would affect the number of wheat plants over a certain period of time.Rats burrow in the soil of wheat field and cause damage to the crop roots. So, the number of wheat plants would fall over a period of time. Rats also feed on ripening ear heads and ripened grains. So, their population would increase fast. The more they are in number, the more damage they would cause to the plant roots, and the more grains they would eat.So, the number of wheat plants in the field would keep decreasing.The following graph would show the change in the number of wheat plants correctly:In the above graph, the number of wheat plants is constantly falling over a period of time. Hence, the right answer is Option C.

Ans 3:

Class : Class 6

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7

Ans 2:

Class : Class 6
but others also produce heat energy?

Ans 3:

Class : Class 7
It will be option D. It will be D as it can be understood from the pictures that S is a room heater which is run by electric. Heat comes out of it. It is therefore used to keep our surroundings warm. Thank you .

Post Your Answer

Subject :NSO    Class : Class 6

Post Your Answer

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
Answer is C.

Ans 2:

Class : Class 5
coal and petroleum are non renewable sourcesbut wind is made up of air and air contains so many gases .Therefore wind cannot be exhausted so wind is renewable resources

Ans 3:

Class : Class 5

Ans 4:

Class : Class 6
It is C , guys....

Ans 5:

Class : Class 5
Answer is c because coal and petroleum can be finished but wind will never get finished

Ans 6:

Class : Class 5
C

Post Your Answer

Subject :NSO    Class : Class 5

Select the correct statement from the following.

A If blisters are formed due to severe burn, they should be immediately pricked and vinegar should be applied on the burnt area.
B Toothpaste should be applied to the skin area where the snake has bitten and the victim should be positioned such that the bitten part lies above the level of heart.
C If a person is bleeding through nose he should be made to lie down flat on ground with head held back.
D Both A and B


Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
In option c, the person must bend head forward to let blood darin out through nose and not down the throat. So option c is wrong.Also sitting is better than lying, as if nose is above heart that reduces the pressure, so option C is terribly wrong

Ans 3:

Class : Class 5

Ans 4:

Class : Class 5
wrong answer as the person should tilt his head sightly forward.

Ans 5:

Class : Class 4

Ans 6:

Class : Class 5
person should bend forward...wrong answer

Post Your Answer

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
B

Ans 2:

Class : Class 3
B

Ans 3:

Class : Class 7

Ans 4:

Class : Class 7
C

Ans 5:

Class : Class 3
A

Ans 6:

Class : Class 7
B

Post Your Answer