JAC Model Paper solution 2024 English medium science class 10th

Jac model paper solution 2024 English medium science class 10th

The Jharkhand Academic Council (JAC) has released the Jac model paper solution 2024 English medium science class 10th and many students are searching for its solutions. In this blog post, I have provided complete, simple, and easy to understand solutions for the JAC Class 10 Science Model Paper 2024.

JAC Class 10 Science Model Paper 2024 Solution. I given you simple and easy solution below you can read it.

I know that students studying in English medium often face difficulties while solving these questions. That’s why I have explained each solution step by step so you can understand the concepts better and prepare confidently for your upcoming exams.

Practicing with these JAC model paper solutions 2024 will help you understand the concepts better and prepare for exams with confidence. Solving jac Class 10 Science model papers and previous year question papers regularly improves speed, accuracy, and performance. Stay consistent, practice daily, and secure good marks in your upcoming JAC Class 10 board exams. After solving this model paper you will be get nice practice for upcoming examination.

Board	Jharkhand Academic Council
Question	JAC Model Paper 2024 Solutions
Class	10th
Subject	Science
Year	2024
Medium	English
Set	1

Q31. Why do we prefer a convex mirror as a rear-view mirror in vehicles?

Answer:- Convex mirrors are commonly used as rear-view (wing) mirrors in vehicles because they give an erect, virtual, full size diminished image of distant objects with a wider field of view.

Q32. Define power of a lens and write its S.I unit.

Answer:- The power of a lens is defined as the reciprocal of its focal length.The SI unit ofpower of a lens is ‘dioptre’.

Q33. A student has difficulty reading the black board while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected?

Answer:- A student has difficulty in reading the blackboard while sitting in the last row. The child is not able to see distant objects, which means he has nearsightedness ( Myopia). This can be corrected by using a concave lens of appropriate power.

Q34. Which reaction is taking place in the given picture? Write the equation of that reaction. 2 Agcl 2Ag +Cl2Answer:- photo-decomposition reaction.

Q34. Which reaction is taking place in the given picture? Write the equation of that reaction. 2 Agcl 2Ag +Cl2

Answer:- Photo-decomposition reaction.

Q35. Write the names of two elements whose outer shell is complete?

Answer:- The names of two elements whose outer shell is complete are :-neon, argon,

Q36. What is Homologous Series?

Answer :- An organic compound which contains the same type of functional groups is called ahomologous series.

Example:- CH₃OH, C₂H₅OH, C₃H₇OH,

Q37. How is fragmentation different from multiple fragmentation?

Answer:-

Fission:- In this an organism breaks into two or more parts and creates new offspring.

These are of two types.

1. Binary fission:- In this a single cellular organism divides into two cells. Like- amoeba

2. Multiple fission:- In this a single cellular organism divides into many cells. Like -Plasmodium.

Q38.What are the five types of R’s to save the environment?

Answer:- The five types of R’s to save the environment are:-

1.Refuse,

2.Reduce,

3.Reuse,

4.Repurpose,

5.Recycle.

Q 39. An object 5 cm in length is held 25 cm away from a converging lens of focal length 10 cm. Find the position, size and nature of the ima ge formed

Answer:-

Given:-

Height of object = 5 cm

Position of object u = – 25 cm

Focal length of lens f = 10 cm

We have to find the position of image v, size, and nature of the image.

Let us use the formula

1/v – 1/u = 1/f

Now substitute the values

1/v + 1/25 = 1/10

1/v = 1/10 – 1/25

1/v = (5 – 2)/ 50

1/v = 3/50

v = 50/3 = 16.66 cm

The distance of the image on the opposite side of the lens is 16.66 cm. We know that Magnification = v/u

m = 16.66/-25

m = -0.66

m = height of the image/ height of the object

-0.66 = height of the image/ 5 cm

Height of the image = -3.3 cm

A negative sign shows that an inverted image is formed.

Q40. Draw a schematic diagram of a circuit consisting of a battery of three cells of 2 V each, a5 Ωresistor, an 8 Ω resistor, and a 12 Ω resistor, and a plug key, all connected in series

Answer:

Q41. What are magnetic field lines? Write the properties of magnetic field lines.

Answer:- Magnetic field lines are imaginary lines, which depict the strength and direction of the magnetic field.

The properties of magnetic field lines.

1. Magnetic field lines never intersect each other.

2. They flow from the south pole to the north pole within the magnet.

Q43. What is redox reaction? Explain by example.

Answer :- A reaction in which both oxidation and reduction occurs is called redox reaction.

ZnO + C ➡️ ZnO+ C

Q 42. Write the formulas and structures of organic compounds. a) butanone b) chloropentane C) methanol

Answer:- a) Butanone:- C₂H₈CO

b) Chloropentane:- C₅H₁₁Cl

C) Methanol:- CH₃OH

Q 44. Write the name and function of three hormones of human beings.

Answer:- The names of three human hormones are –

• 1) Insulin:- It is secreted by pancreas. It controls the amount of sugar in the blood.
• 2) testosterone:- The male sex hormone is testosterone and is synthesized and secreted by the tastes in human males.
• 3) Estrogen:- The female sex hormone is estrogen. It is synthesized and secreted by the ovaries in human females.

Q45. Why are we looking towards alternative sources of energy?

Answer:- Because fossil fuels are being used at large scale and they are non renewable sources of energy, they will disappear after some time. After the depletion of non renewable sources of energy we will be left with nothing, hence we are trying to develop alternate sources of energy.

Q46. Why is ozone layer depletion a matter of concern for us? What steps should we take to limit this damage?

Answer:- The ozone layer is a blanket of gases that envelops the Earth. Ozone layer function as a protective shield for the living beings on the planet. The main function of the ozone layer is to filter out the harmful ultra-violet rays of the Sun.

The damage to the ozone layer is a cause for concern because:

• 1. It will not be able to filter out the ultra-violet rays efficiently, and this will cause various skinproblems such as skin darkening and skin cancer.
• 2. Ozone layer maintains a steady temperature on the planet. Damage to the layer might result in the death of many phytoplanktons that leads to increased global warming.

Chlorofluorocarbons (CFCs) are compounds that damage the ozone layer. To limit the damage to the ozone layer, the release of CFCs into the atmosphere must be reduced. CFCs used as refrigerants and in fire extinguishers should be replaced with environmentally-safe alternatives. Also, the release of CFCs through industrial activities should be controlled.

JAC MODEL PAPER	SOLUTION
Science 10th 2025 Hindi Medium	Click Here
Science 10th 2023 English Medium	Click Here
Science 10th 2022 English Medium	Click Here
Science 10th 2025 Hindi Medium	Click Here
All Models Solutions	Download

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