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Jharkhand Board 10th Science Model Paper Solution 2022 Set 2 English medium Term 2 Subjective
Jharkhand Board Class 10 Science Model Paper Solution 2022 (Set 2 ) for Term 2 in English Medium. This detailed subjective solution covers accurate answers with step-by-step explanations as per the latest JAC Board exam pattern. Boost your preparation with well-structured answers designed to help students excel in their JAC Class 10 Science exam. Perfect for understanding concepts, mastering question patterns, and achieving high scores. Ideal study resource for Jharkhand Board Class 10 Term 2 Science exam preparation
Year 2022 set 2
General Introduction
1. The total number of question is 19.
2. Question 1 to question 7 are Very short answer type questions. Answer any Five of these questions in at most one sentence. Each question carries 2 makes.
3. Question 8 to question 14 are short answer type questions. Answer any Five questions. Each question carries 3 makes.
4. Question 15 to question 19 are short answer type questions. Answer any three questions. Each question carries 5 makes.
Q1. Write the S.I unit of Electricity current. Which device is used to measure electric current in a conductor?
Answer: - The S.I unit of Electricity current is S.I . Ammeter is used to measure electric current in a conductor .
Q2. Write S.I unit of Resistance. The resistance of a wire depends upon its length. Yes or no ?
Answer:- The S.I unit of Resistance Ohm
Yes, because resistance is directly proportional to its length.
Q3. Name two metals which can be easily cut with a knife.
Answer:- The two metals which can be easily cut with a knife is Sodium ( Na) and Potassium ( K ).
Q4. Which functional group is present in CH3COCH3 ?
Answer:- CH3COCH3 --- Ketone .
Q5. What is fossil?
Answer:- The dead remains of plants and animals that are found buried under rocks are called as fossil.
Q6. What do you mean by inheritance traits ?
Answer :- The character that are passed from one generation to other generation are called as in hereditary characters. This phenomenon is called as heredity.
Q7. Give example of a Food - Chain?
Grass - Deer - Lion .
Q8. State Ohm’s Law. On the basis of Ohm’s Law write the relation between potential difference and electric current. Define resistance of a conductor.
Answers: - At constant temperature the current flowing through a conductor is directly proportional to the potential difference across its ends.
V=I
V= IR. { Where R= Constant}
I = V/R
Resistance is a property of the wire, which affects the flow of the current. The SI unit of resistance is ohm.
Q9. What are magnetic field lines? Write any two properties of magnetic field lines.
Answers:- Magnetic field lines are imaginary lines that represent the direction and strength of a magnetic field
- Two properties of magnetic field lines are:
- They never cross one another.
They flow from the south pole to the north pole within the magnet and north pole to south pole outside the magnet.
Q10. What is called Corrosion? What are the measures to protect it.
Answers:- The surface of some metals such as iron, is corroded when they are exposed to moist air for a long time. This’ phenomenon is called as corrosion.
Ways to avoid corrosion-
- Galvanisation-by electroplating zinc layer.
- Painting- by painting on a metal.
Q11. Explain the difference between saturated and unsaturated hydrocarbons.
Answers:-
Saturated Hydrocarbon and Unsaturated Hydrocarbon
Q12. What is biological magnification ?
Answer:- Biological magnification, is the increasing concentration of a substance, such as a toxic chemical, in the tissues of organisms at successively higher levels in a food chain.
Q13. Draw a diagram of the flow of energy in an ecosystem.
Answer :- The flowchart of energy in ecosystem
Grass – Deer – Lion
Q14. Why mendel choose pea plant for his experiments?
Answer:- Mendel choose pea plants for his experiments because of the following reasons:
- It can be cultivated many times in a year
- Pea plants grow easily and their study was easier.
- Its flowers are big and have more capacity of pollination
