CBSE Class 10 Science Compartment Question Paper Solved 2018 Set 1

CBSE Class 10 Science Compartment Question Paper Solved 2018 Set 1. 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. Mendel took tall pea plants and short pea plants and produced F1 progeny through cross-fertilisation. What did Mendel observe in the F1 progeny ?

2. Name two constituents of biogas.

3. 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.

4. 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

5. 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.

6. 1 g of solid sodium chloride is taken in a clean and dry test tube and 2 mL of conc.sulphuric acid is added to it. If the gas evolved is tested first with dry and then with wet blue litmus paper, in which case will the litmus paper change colour ? Give reason for your answer. What inference can be drawn about the nature of the evolved gas ? Support your answer with chemical equation for the reaction.

OR

(a) For the preparation of cakes, baking powder is used. If at home your mother uses baking soda instead of baking powder, how will it affect the taste of the cake and why ?

(b) How is baking soda be converted into baking powder ?

(c) What makes the cake soft and spongy ?

7. 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.

8. What is geotropism ? Draw a labelled diagram of a potted plant showing positive geotropism and negative geotropism. 

Please click the link below to download pdf file of CBSE Class 10 Science Compartment Question Paper Solved 2018 Set 1.