National Science Olympiad Forum By SOF Olympiad Trainer - Page 281

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
d

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Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Class : Class 1

C


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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7

Ans 3: (Master Answer)

Class : Class 1

A

Preeti is having difficulty in breathing, laughing and yawning, it seems she has injured an organ, which is related to inhalation and exhalation of air. That means her Lungs are injured, and that is why she is also feeling pain in her chest.


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Subject :NSO    Class : Class 7

Read the given statements and select the correct option.
Statement 1 : To neutralise the effect of a bee sting, that portion of the body is rubbed with moist baking soda.
Statement 2 : Baking soda contains sodium carbonate which neutralises the effect of acid injected by bee sting.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true and statement 2 is false.
D Both statements 1 and 2 are false.


Ans 1:

Class : Class 7

Ans 2:

Class : Class 7

Ans 3:

Class : Class 7

Ans 4:

Class : Class 9

Ans 5:

Class : Class 7
Class :

Ans 6:

Class : Class 3

Ans 7:

Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
they have not given the diagram only

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 9
CThe natural fibres hidden in the grid are WOOL,JUTE,COTTON,HEMP and FLAX

Ans 2:

Class : Class 4

Ans 3:

Class : Class 4

Ans 4:

Class : Class 6
Please explain what is hemp

Ans 5:

Class : Class 4
flax is not a fibre

Ans 6:

Class : Class 4
What is hamp?

Ans 7: (Master Answer)

Class : Class 1

C

The natural fibres hidden in the grid are WOOL, JUTE, COTTON, HEMP and FLAX.


Ans 8:

Class : Class 5
Answer c is correct because we can find cotton hemp jute flax and wool for explanation hemp is a synthetic fibre used to make most T-shirts

Ans 9:

Class : Class 4
What is hemp?

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
No mathomagic A is the correct answer because both penguins and polar bear have bubbler under their skin. Deer do not have a layer of hair to keep them warm like polar bear have.

Ans 2:

Class : Class 8
A

Ans 3:

Class : Class 6

Ans 4:

Class : Class 9
A IS THE CORRECT ANSWER.POLAR BEAR AND PENGUIN LIVE IN POLAR REGION AND BOTH OF THEM HAVE A LAYER OF BLUBBER ............................

Ans 5:

Class : Class 6
THE CORRECT ANSWER IS A BECAUSE BOTH POSESS A LAYER OF FAT.

Ans 6:

Class : Class 6
Yes the answer is A

Ans 7:

Class : Class 5
A is the correct ans:)

Ans 8:

Class : Class 8
A

Ans 9:

Class : Class 6
No. This is d) I bet a million ppl made the mistake. Penguin sounds reasonable, but deer and polar bear, both use hair for insulation in winter

Ans 10:

Class : Class 5
A is the correct Ans as to both posses a layer of fat.

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Subject :NSO    Class : Class 4

A scientist observed a sudden increase in the number of algae in a lake over a few days. The reason behind it could be that ____________.

AWater cycle in the area got unbalanced
BElectronic wastes were being dumped in a nearby area
CA factory with heavy smoke discharge has been established nearby
DHeavy amount of chemical fertilisers were being used in a nearby field


Option d As heavy amount of chemicals fertilizers were being used in a nearby fiel

Ans 1:

Class : Class 4

Ans 2: (Master Answer)

Class : Class 1

D


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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
Minimum pressure means maximum area as pressure is inversely proportional to area so, 1 cm = 1/100 m so the Largest area is 40cm*30cm = 4/10* 3/10 = 12/100 P =F/Area P = Mass*acceleration/area P = 60*10/(12/100) P = 600 * 100/12 P = 60000/12 = 5000 so answer is C

Ans 2:

Class : Class 9
C is the answer

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Subject :NSO    Class : Class 5

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