National Science Olympiad Forum By SOF Olympiad Trainer - Page 23

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 10

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 8

Read the given passage and answer the following questions.
An unidentified flying object (UFO) lands on a planet at a point 5 kilometres from an active volcano. Just after the landing, a volcanic eruption occurs. The time interval between the flash of light from the volcanic explosion and the sound of eruption was registered as 100 s. The time period of the sound waves produced is 2 s.
Which of the following is carried by waves from one place to another?

AMatter
BMatter and Energy
CWavelength
DEnergy


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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 10

In a plant, smooth seeds (S) are dominant over wrinkled seeds (s) and green seeds (G) are dominant over yellow seeds (g). A plant homozygous for smooth and green seeds is crossed with a plant having wrinkled and yellow seeds. The F1 offsprings are self crossed to produce F2 generation. If a total of 160 offsprings are produced, how many plants are expected to be having wrinkled and green seeds in F2 generation, according to a typical Mendelian cross?

A 90
B 30
C 20
D 10


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Subject :NSO    Class : Class 6

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