IMPORTANT QUESTIONS

1. Q201 Why does dry HCl gas not change the colour of the dry litmus paper?

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2. Q202 Compounds such as alcohol and glucose also contain hydrogen but are not categorised as acids. Why?

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3. Q203 A tissue whose cells are capable of dividing and redividing is called

   • a. Complex tissue
   • b. Connective tissue
   • c. Permanent tissue
   • d. Meristematic tissue

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4. Q204 How the silk is formed by caterpillars?

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5. Q205 Under ____procedure good teams do not meet each other at the very start of the tournament.

   • a. knockout
   • b. League
   • c. combination
   • d. seeding

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6. Q206 The energy reserve in autotrophs are

   • a. Glycogen
   • b. Starch
   • c. Proteins
   • d. Fats

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7. Q207 How can one treat an infectious disease?

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8. Q208 Let us find the force of attraction between two blocks lying 1 m apart. Let the mass of each block is 40 kg.

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9. Q209 What is the percentage of H₂O present in our body?

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10. Q210 Which uses more energy: A 250 W TV set in 1 hr or a 1200 W toaster in 10 minute?

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