CBSE Class 10 Science Sample Paper (8)

CBSE Class 10 Science Sample Paper (8). Based on CBSE and NCERT guidelines. The students should practice these Question Papers to gain perfection which will help him to get more marks in CBSE examination. Please refer to more CBSE Class 10 question papers in other links. The CBSE Question papers are prepared based on trend in past examinations and expected questions in CBSE exams. Its always recommended by CBSE to practice the papers released by CBSE to get better exams in CBSE exams. CBSE Last Year Question Papers for class 10 for final/ term/ SA1/ SA2 Examinations conducted by Central Board of Secondary Education for all CBSE affiliated schools in India and abroad. Please refer to more CBSE Class X sample papers, question papers, HOTs etc in other links.

SECTION-A 

1. Hydrogen being a highly inflammable gas and oxygen being a supporter of combustion, yet water which is a compound made up of hydrogen and oxygen is used to extinguish fire. why.?

2. Name any one metal which is found in its free state in nature.

3. List any two advantages of burning charcoal over burning wood.

4. What happens to resistance of a conductor when its area of cross-section is increased ?

5. Using the electronic configurations, explain how Magnesium atom combines with Oxygen atom to form magnesium oxide by transfer of electrons.

6. State in brief the preparation of washing soda from baking soda. Write balanced chemical equation of the reaction involved.

7. Write the balanced equation for the following reaction and identify the type of reaction in each case.

(i) Potassium bromide + Barium Iodide → Potassium iodide + Barium bromide.

(ii) Hydrogen (g) + Chlorine(g) → Hydrogen Chloride (g)

8. What is the colour of FeSO₄. 7H₂O crystals ? How does this colour change upon heating ? Give balanced chemical equation for the changes. FeSO₄. 7H₂O

9. Explain the process of nutrition in amoeba.

10. Give two advantages of using nuclear energy.

11. The wattage of a bulb is 24 W when it is connected to a 12V battery. Calculate its effective wattage if it operates on a 6 V battery (Neglect the change in resistance due to unequal heating of the filament in the two cases).

Please refer to attached file for CBSE Class 10 Science Sample Paper (8).