# Download Polytechnic solved papers 2022, sample papers, previous year papers

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Download Polytechnic solved papers 2022, sample papers, previous year papers: Are you preparing for the upcoming Polytechnic 2022 Entrance Exam? Then this is the right place, as here we have provided Polytechnic 2022 Previous Question Papers with Answers which you can practice to boost your upcoming exam preparation. By practicing the Polytechnic solved papers 2022 you will get to know the structure of the exam and can score well in the exam. You can download the Polytechnic Sample Papers 2022 PDF now from the link given below.

## Jharkhand Polytechnic Previous Years Question Papers

Previous Year Question Paper 2019

Question 1:Â Artificial Kapoor would have:

1. C2Cl6
2. CCl4
3. C2Cl4
4. They have not

Question 2: The main source of aromatic compounds is

1. Fruit
2. Winter green oil
3. Petroleum
4. Ant

Question 3: The slow chemical process of making coal from wood is called:

1. decomposition
2. oxidation
3. Distillation
4. Carbonization

Question 4:Â If the ratio of the second and third term in the expansion of (a + b)2 is equal to the ratio of the third and fourth term in the expansion of (a + b ) n+3 then the value of n is equal to :

1. 8
2. 7
3. 5
4. 3

Question 5: The equation of line which is parallel to the straight line 3x + 4y â€“ 7 = 0 and passing through (1,2) is :

1. 3x + 4y = 11
2. 3x+4y+11= 0
3. 4x-3y+2=0
4. 3x+4y+7=0

Question 6: A dice is thrown then the probability that the sum of the number is 1 or 6 is:

1. 1/5
2. 1/3
3. 2/5
4. 3/4

Question 7: The sum of 20 terms of the series 1 + 4 + 7 + 10 +â€¦.is:

1. 290
2. 490
3. 590
4. none of these

Question 8: Which is correct for inside charged sphere?

1. E â‰  0, V = 0
2. E=0, V= 0
3. Eâ‰ 0, Vâ‰ 0
4. E=0, V = 0

Answer: E=0, V = 0

Question 9:Â The function of a grid in a triode is:

1. to increase plate voltage
2. to decrease plate voltage
3. reduce the effect of space charge
4. None

Answer:Â to increase plate voltage

Question 10:Â The wavelengths associated with photons and electrons are the same, the ratio of their momentum will be:

1. 1: 1
2. 2: 1
3. 1: 4
4. 3: 2

Question 11: Of which the velocity is equal to light velocity:

1. Cathode ray
2. X-rays
3. positive ray
4. all

Question 12:Â If the pressure of a gas is doubled at a constant temperature, then the velocity of sound in the gas becomes:

1. unchanged
2. âˆš2 times
3. half
4. double

Question 13:Â Which quantity doesnâ€™t remain constant in simple harmonic motion:

1. Time period
2. velocity
3. frequency
4. amplitude

Question 14: Brasses and bronzes are welded using

1. carburising flame
2. oxidizing flames
3. reducing flame
4. neutral flame

Question 15: In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit?

1. 30%
2. 70%
3. 100%
4. 250%

Question 16: A shopkeeper expects a gain of 22.5% on his cost price. If in a week, his sale was of Rs. 392, what was his profit?

1. 18.20
2. 70
3. 72
4. 88.25

Question 17: On selling 17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls. The cost price of a ball is:

1. 45
2. 50
3. 55
4. 60

Question 18: The main chemical constituent of clay is

1. silicon oxide
2. aluminium borosilicate
3. zeolites
4. aluminium silicate

Question 19: The percentage profit earned by selling an article for Rs. 1920 is equal to the percentage loss incurred by selling the same article for Rs. 1280. At what price should the article be sold to make 25% profit?

1. 2000
2. 2200
3. 2400