CBSE Class 10 Science Question Paper Solved 2019 Set J

CBSE Class 10 Science Question Paper Solved 2019 Set J. Students can download the last year board exams question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.

SECTION A

1. Define resistance. Give its S.I. unit.

2. Name any two elements that are used in fabricating solar cells.

SECTION B

3. State laws of reflection of light.

OR

Define absolute refractive index and express it mathematically.

4. Draw magnetic field lines around a bar magnet.

5. What happens when 5% alkaline potassium permanganate solution is added drop by drop to warm propyl alcohol (propanol) taken in a test tube ? Explain with the help of a chemical equation.

SECTION C

6. What are fossils ? Describe briefly two methods of determining the age of fossils.

7. What is the cause of dispersion of white light through a glass prism ? Draw a ray diagram to show the path of light when two identical glass prisms are arranged together in inverted position with respect to each other and a narrow beam of white light is allowed to fall obliquely on one of the faces of the prisms.

OR

What is scattering of light ? Use this phenomenon to explain why (i) the Sun appears reddish at sun-rise, and (ii) the clear sky appears blue.  

Please click the link below to download pdf file of CBSE Class 6 Computers Question Paper 2017 (1).