IMPORTANT QUESTIONS

1. Q1 In which organism spore formation takes place?

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2. Q2 Write the function of following parts in human female reproductive system: Uterus

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3. Q3 What is the unique ability of a carbon atom?

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4. Q4 How would you distinguish between baking powder and washing soda by heating?

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5. Q5 What are hydrocarbons? Give two examples.

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6. Q6 Which of the following are used by females as a method of birth control?(i) Diaphragmbr(ii) Femidoms(iii)Copper T br (iv) Loops

   • (a) Only (ii)
   • (b) (i) and (iv)
   • (c) (i), (ii), (iii) and (iv)
   • (d) (i), (ii) and (iii)

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7. Q7 Characters that are transmitted from parents to offspring during reproduction shows:

   • (a) only similarities with parents
   • (b) only variations with parents
   • (c) both similarities and variations with parents.
   • (d) neither similarities nor variations.

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8. Q8 What is pollination? Mention the agents of pollination.

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9. Q9 Which of the following canals brought about greenery in Rajasthan?

   • (a) Rajiv Gandhi Canal
   • (b) Indira Gandhi Canal
   • (c) Jawaharlal Canal
   • (d) Mahatma Gandhi Canal

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10. Q10 Based on the information given below, study these information related to answer the questions that follow: The pH scale can be used to determine the strength of acid solutions as well as basic solutions by making use of hydrogen ion concentrations in them. Consider two solutions A and B having pH values 3 and 9.5 respectively. Which of the following substances would have pH less than 7?

    • (a) Vinegar
    • (b) Antacid
    • (c) Water
    • (d) Soap

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