National Science Olympiad Forum By SOF Olympiad Trainer - Page 92

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Subject :NSO    Class : Class 8

Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.
(i) Diatoms are marine algae which float in water due to the presence of light storage fats with silica.
(ii) AIDS virus kills WBC and reduces immunity of the body.
(iii) Escherichia coli is present in intestine of human where they help in digestion of food.
(iv) A virus always consists of double strands of DNA or RNA surrounded by protein coat.

(i) (ii) (iii) (iv)
A T F T F
B T T T F
C T T F F
D T F T T


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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 10

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 10

Ans 2:

Class : Class 10

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 4
D

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 9

Read the given statements and select the correct option.
Statement 1 : If we push a massive truck parked along the roadside, it will not move.
Statement 2 : Two opposite and equal forces acted on two bodies in contact cancel each other.

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 but statement 2 is false.
D Statement 1 is false but statement 2 is true.


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Subject :NSO    Class : Class 8

Read the given paragraph where few words have been italicised. Make changes (wherever necessary) and select the incorrect option. Dolly was developed from a cell taken from mammary gland of Scottish black face ewe and unfertilised egg cell of Finn Dorsett sheep. Both the cells were fused after removing the plasma membrane from the unfertilised egg cell. Embryo was then implanted into the uterus of the sheep from which unfertilised egg was taken. It developed into baby sheep Dolly.

AMammary gland should not be changed as it is correctly mentioned.
BPosition of Scottish blackface ewe and Finn Dorsett sheep should be interchanged.
CPlasma membrane must be changed to nucleus.
DNone of these


Here why the answer is option d

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