CBSE Class 10 Science Compartment Question Paper Solved 2018 Set 2

CBSE Class 10 Science Compartment Question Paper Solved 2018 Set 2. Students can download the last year 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. 

1. Name two constituents of biogas.

2. Mendel took tall pea plants and short pea plants and produced F1 progeny through cross-fertilisation. What did Mendel observe in the F1 progeny ?

3. Different parts of brain are associated with specific functions. Name the part of human brain which perform the following functions :

(a) Sensation of feeling full

(b) Vomiting

(c) Picking up a pencil

(d) Riding a bicycle

4. An object is kept 40 cm in front of a concave mirror of focal length 20 cm. Find the position and nature of the image. Draw a ray diagram to show the formation of image in this case.

5. Carbon has four electrons in its valence shell. Which type of compounds can be formed by carbon atom and why ? Give any one example of such compounds.

6.What are acquired traits ? Why are these traits generally not inherited over generations ? Explain.

7.Calculate the total cost of running the following electrical devices in the month of September, if the rate of 1 unit of electricity is rs. 6.00.

(i) Electric heater of 1000 W for 5 hours daily.

(ii) Electric refrigerator of 400 W for 10 hours daily.

8.What is “Sustainable Management of Natural Resources” ? Why is it necessary ?Which one out of reuse and recycle, would you practise in your daily life and why ?

9.While teaching the chapter “Our Environment” the teacher stressed upon the harmful effects of burning of fossil fuels, plastic, paper etc. The students noticed the extensive use of plastic and polythene in daily life, which can be avoided and the surroundings can be kept clean. They decided to make their school “plastic and polythene” free and motivated each other for its minimum use.

(a) Why should the use of polythene and plastic be reduced in daily life ?

(b) In what ways the students would have avoided the use of plastic and polythene in their school ?

(c) How the students would have motivated each other for the success of their decision ? 

10. What happens when hydrogen is added to a vegetable oil in the presence of nickel ?Name the reaction and write one difference between the physical property of the vegetable oil and the product obtained in this reaction. Write the role of nickel in this reaction. 

Please click the link below to download pdf file of CBSE Class 10 Science Compartment Question Paper Solved 2018 Set 2.