IMPORTANT QUESTIONS

1. Q301 The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the defect?

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2. Q302 Draw a food chain existing in a forest

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3. Q303 Though reproduction is not a life process, yet it is essential. Why?

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4. Q304 If an object is placed at a distance of 10 cm in front of a plane mirror, how far would it be from its image?

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5. Q305 Because the high electropositivity, the atoms of metals can easily form

   • (a)Positive ions
   • (b)Negative ions
   • (c)Neutral ions
   • (d)Covalent bonds

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6. Q306 Why do we need to conserve mineral resources? Explain any three reasons.

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7. Q307 What is the change in momentum of a car weighing 1500 kg when its speed increases from 36 km/h to 72 km/h uniformly?

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8. Q308 Which of the following will not give H* ions in aqueous solution?

   • (a)H₂CO₃
   • (b)HCI
   • (c)C₂H₅OH
   • (d)CH₃COOH

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9. Q309 Name a few things, which you usually eat and contain acids

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10. Q310 Judge the equivalent resistance when the following are connected in parallel(a) 1Ω and 10⁶Ω, (b) 1 Ω and 10³Ω, and 10⁶Ω

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