CBSE Class 10 Science Sample Paper 2018 Set K

Read and download PDF of CBSE Class 10 Science Sample Paper 2018 Set K designed as per the latest curriculum and examination pattern for Class 10 issued by CBSE, NCERT and KVS. The latest Class 10 Science Sample Papers have been provided with solutions so that the students can solve these practice papers and then compare their answers. This will help them to identify mistakes and improvement areas in Science Standard 10 which they need to study more to get better marks in Grade 10 exams. After solving these guess papers also refer to solved Class 10 Science Question Papers available on our website to build strong understanding of the subject

Sample Paper for Class 10 Science 2018 Pdf

Students can refer to the below Class 10 Science Sample Paper designed to help students understand the pattern of questions that will be asked in Grade 10 exams. Please download CBSE Class 10 Science Sample Paper 2018 Set K

Science Class 10 Sample Paper 2018

Section A

1. In what way is the word AMBULANCE printed in front of the hospital vans?

2. At what pH in the mouth is tooth decay faster and why?

3. A white powdery substance having strong smell of chlorine is used for disinfecting

drinking water supply of water works. Identify the substance and give its chemical name.

4. Name any two safety measures commonly used in electric circuits and appliances.

5. Why does the sky appears dark instead of blue to an astronaut?

6. Why is photosynthesis considered an endothermic reaction?

7. A copper coin was kept dipped in silver nitrate solution for a few hours/ days.

(a) What will happen to the copper coin?

(b) What will happen to the colour of the solutions?

8. (a) Which gas is produced when dilute hydrochloric acid is added to a reactive metal?

(b) Write the chemical reaction when iron reacts with dilute H2So4.

9. Why a salt which does not conduct electricity in the solid state becomes a good conductor in molten state? Explain.

10. On what factors does the resistance of a conductor depend.

11. (i) What is myopia? 
(ii) Make a ray diagram to show how the eye defect myopia is corrected by using a suitable lens.
12. Why do HCl, HNO3 etc show acidic character in aqueous solutions while solutions of compound like C2H5OH and gulucose don’t show acidic character? 
13. (a) How do you calculate the valency of an element from its electronic configuration?
(b) What is the valency of magnesium with atomic number 12 and sulphur with atomic number 12 and sulphur with atomic number 16?
(c)How does the valency vary in a period on going from left to right? 
14. (a) With the help of ray diagram show that where light falls obliquely on a side of a rectangular glass slab, the emergent ray is parallel to the incident ray.
(b) Show the lateral displacement of the ray on the diagram. 
15. (a) Name the functional group present in the following compounds: 
(i) cH3cH2cH2 – OH
(ii) cH3COCH2CH2CH3
(b) Write the common names of Isomers of butane.
(c)What is meant by denatured alcohol? What is the need to denature alcohol? 
(a) Why does carbon form compounds mainly by covalent bonding?
(b) What happens when ethanol is heated with ethanoic acid in the presence of few drops of concentrated sulphuric acid. Write the chemical equation also.
(c) What is a covalent bond? What type of bond exists in (i) ccl4 (ii) cacl2 

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