National Science Olympiad Forum By SOF Olympiad Trainer - Page 664

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
potato and ghee

Ans 2:

Class : Class 5
I do not think wheat and rice contain iodine. please let me know

Ans 3:

Class : Class 5
Potato and ghee

Ans 4:

Class : Class 7
The iodine test is used to test for the presence of starch. Starch is a type of carbohydrate. Now, let’s see which of the following food products have starch, and will give positive iodine test: A. Milk and Pulses ----- Milk and Pulses are rich in proteins, so they will not give positive iodine test. B. Rice and Wheat ----- Rice and Wheat are grains, which are rich in carbohydrates. So, they will have starch and give positive iodine test. C. Banana and Coconut Oil ----- Banana is rich in carbohydrates, so it will give positive iodine test. But Coconut Oil is rich is fats, so it will not give positive iodine test. D. Potato and Ghee ----- Potato is rich in carbohydrates, so it will give positive iodine test. But Ghee is rich is fats, so it will not give positive iodine test. Hence, the correct answer is Option B, since both Rice and Wheat will give positive iodine test.

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
It will ten centimetres because the length of this is 5 cm [7-2] .

Ans 2:

Class : Class 7
But the solution is talking about another question .

Ans 3:

Class : Class 8

Ans 4:

Class : Class 7
Yeah The ribbon is folded so it will 10 cm [5cm x 2]

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 10

Ans 1: (Master Answer)

Class : Class 1
Yes, the correct answer is B.

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8

Ans 2:

Class : Class 5

Ans 3:

Class : Class 4
C auto motor other we should ride

Ans 4:

Class : Class 8
Answer is C

Ans 5:

Class : Class 8
The Answer is C. NOW THE QUESTION IS HOW? THE ANSWER IS THE MACHINES SHOWN IN PICTURE A,B,D RUNS BY MUSCULAR . FORCE. THE OPTION C RUNS BY MOTOR.

Ans 6:

Class : Class 6
c

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Subject :NSO    Class : Class 10

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 3
Sun's position doesn't change, we see it changing due to earth's rotation i.e. earth's changing position. Then how D is incorrect option. No option is incorrect in this question.

Ans 2:

Class : Class 5
Option D is not incorrect, since earth's position change and not sun's. Further, option C should be the wrong answer, since shadow length are same in 10AM and 2 PM, 11AM, 1 PM and likewise

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