IMPORTANT QUESTIONS

1. Q291 Name the products formed when: Sodium ethanoate is heated with soda lime.

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2. Q292 Why atomic size decrease with increase in atomic number?

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3. Q293 How do the following traits change in a period from left to right in the periodic table - Metallic character.

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4. Q294 Name the wire used in electric heater and responsible for heating.

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5. Q295 Why is DNA copying an essential part of the process of reproduction

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6. Q296 List four ways through which AIDS can transmit from an infected person to a healthy person

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7. Q297 The self linkage property (catenation) is maximum in

   • (a)carbon
   • (b)silicon
   • (c)iodine
   • (d)fluorine

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8. Q298 Name one organism which can live without oxygen.

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9. Q299 What is the importance of wildlife?

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10. Q300 How many Electrons are there in one coulomb charge?

    • (a)1.6 x10⁻¹⁹
    • (b)6.25x10⁻¹⁹
    • (c)6.25x 10⁻¹⁸
    • (d)1.6 x10⁻¹⁸

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