IMPORTANT QUESTIONS

1. Q361 In a flower, the parts that produce male and female gamete (germ cells) are:

   • (a)stamen and anther
   • (b)filament and stigma
   • (c)anther and ovary
   • (d)stamen and style

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2. Q362 A person can see upto a distance of 0.5 m. To correct his defect of vision so that he could see upto infinite distane, which type of lens and of what power he has to use in his spectacles?

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3. Q363 The sea water appears bluish. Why?

   • (a)algae and aquatic plants float in it
   • (b)the image of blue sky is observed
   • (c) light is scattered
   • (d)light is absorbed by the deep water.

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4. Q364 Several electric bulbs designed be used a 220V electric supply are rated W. How many lamps be connected parallel with each other across the two wire 220V line if the maximum allowable current 5A?

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5. Q365 Which uses more energy, a 250 W TV sèt in 1 hr, or a 1200 W toaster in 10 minutes?

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6. Q366 What is the atomic number of an element?

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7. Q367 Which ore particles can be separated from the gangue particles using the froth-floatation method?

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8. Q368 What is the component of biogas?

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9. Q369 Periodic law is proposed by:

   • (a)Newlands
   • (b)Dobereiner
   • (c)Mendeleev
   • (d)Lothar Mayer.

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10. Q370 Which element has amphoteric oxide:

    • (a)C
    • (b)Na
    • (c)Mg
    • (d)Sn

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