jac.nic.in X Science Question Paper Model : Jharkhand Academic Council

Name of the Organisation : Jharkhand Academic Council
Degree : X Std
Document Type : Model Question Paper
Name of the Subject : Science

Website : jac.nic.in
Download Sample Question Paper : https://www.pdfquestion.in/uploads/7640-Science10.pdf

Science Model Question Paper :

Science :
Group A (Physics & Chemistry) :
1. What is the SI unit of power of a lens ?

Related : Jharkhand Academic Council Mathematics Model Question Paper : www.pdfquestion.in/9955.html

2. Write the chemical formula of common salt.
3. By which instrument potential difference is measured ?
4. What is the alloy of Copper and Zinc called ?
5. Which is the most important device to protect electric circuits from the harm caused by short circuit and overloading ?
6. Write the functional group present in HCHO
7. Find the focal length of a convex mirror whose radius of curvature is 32 cm.
8. Red-brown powder of copper is heated as shown in the figure. Labell (1) and (2) of the figure.
9. An object is placed in front of a concave mirror beyond the centre of curvature C.Draw the ray diagram of the image so formed.
10. What is pH scale ? Write pH value of a neutral solution
11. Give names of two energy sources that you would consider to be exhaustible. Give reasons for your choices.
12. An element X is in group 1 and third period of the periodic table
(a) What is X – metal or non–metal?
(b) What is its valency ?
13. Why is the colour of the clear sky blue ?
15. Write name and colours of three wires used in domestic wiring.
16. Draw the structural formulae for the following compounds :
i) Bromopropane
ii) Propanol
iii) Propene
17. How can three resistors of resistances and be connected to give a total resistance of What is resistance ? Write its SI unit.
What is electrical generator ? Write its principle. Draw a labelled diagram of A.C. generator.
18. An organic compound X is widely used as a preservative in pickles and has a molecular formula C2H4O2. This compound reacts with ethanol to form a sweet smelling compound Y.
(a) Identify the compound X.
(b) Write the chemical equation for its reaction with ethanol to form compound Y.
(c) How can we get compound X back from compound Y ?
(d) Name the process and write the corresponding equation.

Group B (Biology) :
19.What is the structural and functional unit of Nervous System ?
20. Through which process of asexual reproduction does a yeast cell reproduce ?
21.Mention two traditional methods of water conservation.
22.What is reflex arc ? What are its components ?
23. What are the advantages of sexual reproduction over asexual reproduction ?
24. What can be bad impacts of depletion of Ozone layer ?
25. What are fossils ? What do they tell us about the process of evolution ?
26. What changes would you incorporate in your life-style in a move towards a sustainable use of our resources ?
27. a. What is the function of Lymph in our body ?
b. Draw a neat diagram of human heart and label the main parts.
Or
a. Why are the small numbers of surviving tigers a cause of worry from the point of view of genetics ?
b. How is the sex of the child determined in human beings ?

Why did political leaders differ sharply over the question of separate electorates describe ? ( Answer in 100 – 125 words )
OR
Discuss the Salt March to make clear why it was an effective symbol of resistance against colonialism. ( Answer in 100 – 125 words )
Why did industrial production in India increase during the First World War ? Write any three causes. (Answer in 60 – 80 words)
Explain the three causes of the great Depression
OR
What forms of entertainment came up a in nineteenth century England to provide leisure activities for the people ? Write any three forms of entertainment (Answer in 60 – 80 words)
Why did some people in eighteenth century Europe think that print culture would bring enlightenment and end despotism ? Explain ( Answer in 100 – 125 words )
OR
What were the effects of the spread of print culture for poor people in nineteenth century India ? Explain ? (Answer in 100 – 125 words )
In the given outline map of world mark the following places
a) London
b) Indo-China Union.
What are the biotic and abiotic resources ? Give some examples. ( Answer in 30 words )
Which of the following statements is not a valid reason for the depletion of flora and fauna ?
a) Agricultural expansion
b) Large scale developmental projects
c) Grazing and fuel wood collection
d) Rapid industrialisation and urbanisation.
Which mineral is contained in the Monazite sand ? ( Answer in 30 words )
How do industries pollute the environment? (Answer in 60 – 80 words )