CBSE, Uttrakhand Board: ADVANCE LEARNING PROGRAMME

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:SPECIAL FEATURES OF THE WORKSHOP:

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  Education Mantra Provide the Advance Techniques to Students to Understand the Fundamentals of the SCIENCE, MATHEMATICS and LANGUAGE.
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  Our Course modules are Designed on the Basis of UTTRAKHAND and CBSE Boards.
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  Coaching for Science+Mathematics
  Just in Rs. 800/- for IX and X Standards.
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  Coaching for Physics+Mathematics
  Just in Rs. 1000/- for XI and XII Standards.
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  Full Syllabus in 120Days.
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  Twice Revision.
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  10 test for all Subjects.
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  Final Pre Board Test 3 Times.
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Magnetic Effect Of Electricity

This Question Paper is Based on X CBSE Science and Technology Syllabus

1) What is meant by the term “magnetic” field?
2) At the center of Bar Magnet there is very week magnetic field. How can you prove it?
3) Define magnetic field lines?
4) Draw a sketch to show the magnetic field pattern (or magnetic field lines) due to a bar magnet.
5) Give three properties of the magnetic field lines.
6) Explain why, two magnetic field lines do not intersect each other.
7) What is meant by Hypothetical north-South Direction? Explain.
8) Explain why, a freely suspended magnet always points in the north-south direction.
9) Why does a compass needle get deflected when brought near a bar magnet?
10) You are given the magnetic field pattern of a magnet. How will you find out from it where the magnetic field is strongest?
11) What are the two ways in which you can trace the magnetic field pattern of a bar magnet?
12) Draw a sketch to show the magnetic lines of force due to a current carrying straight conductor.
13) Draw the magnetic lines of force due to a circular wire carrying current.
14) Describe some experiment to show that the magnetic field is associated with an electric current.
15) State the form of magnetic field lines around a straight current carrying conductor.
16) What is a solenoid prove that it contains magnetism.
17) State qualitatively the effect of inserting an iron core into a current carrying solenoid.
18) Name the rule for finding the direction of magnetic field produced by a straight current carrying conductor.
19) Describe how you will locate a current carrying wire concealed in a wall.
20) Describe the constructions and working of an electromagnet. Mention the factors on which its strength depends.
21) State and explain Maxwell’s right-hand thumb rule.
22) What conclusion do you get from the observation that a current-carrying wire deflects a compass needle placed near it?
23) Name the scientist who discovered the magnetic effect of current.
24) Which effects of current can be utilised detecting a current-carrying wire concealed in a wall?
25) What is a solenoid? Draw a sketch to show the magnetic field lines produced by a current carrying solenoid.
26) What type of “core” should be put inside a current-carrying solenoid to make an electromagnet?
27) What is an electromagnet? How does it differ from a permanent magnet? State three factors on which the strength of an electromagnet depends.
28) Name five devices where permanent magnets are used.
29) In the straight wire A, current is flowing in the vertically downward direction whereas in wire B is current is flowing in the vertically upward direction. What is the direction of magnetic field:
i. In wire A? (b) In wire B?
30) Name the rule which you have used to get the answer.
31) The magnetic field inside a long straight solenoid carrying current:
i. Is zero
ii. Decreases as we move towards its end.
iii. Increases as we move towards its end.
iv. Is the same at all points?
Choose the correct option.

32) What is the shape of a current-carrying conductor whose magnetic field pattern resembles that of a bar magnet?
33) State whether the following statement is true or false:
34) The field inside a long circular coil carrying current will be parallel straight lines.
35) How does a solenoid behave like a magnet? Can you determine the north and south poles of a current-carrying solenoid with the help of bar magnet? Explain.
36) State the rule to determine the direction of magnetic field around a straight current-carrying conductor.
37) What is Maxwell’s corkscrew rule? For what purpose is it used?
38) What are the various ways in which the strength of magnetic field produced by a current-carrying circular coil can be increased?
39) Which of the following correctly describes the magnetic field near a long straight wire?
i. The field consists of straight lines perpendicular to the wire.
ii. The field consists of straight lines parallel to the wire.
iii. The field consists of radical lines originating from the wire.
iv. The field consists of concentric circles centred on the wire.
40) State Fleming’s left-hand rule.
41) In a statement of Fleming’s left-hand rule, What do the following represent?
i. Direction of centre finger.
ii. Direction of forefinger.
iii. Direction of thumb.

42) If the current in a wire is flowing in the vertically downward direction and a magnetic field is applied from west to east, what is the direction of force on the wire?
43) Name one device which works on the magnetic effect of current.
44) What is an electric motor? With the help of a diagram, describe the working of an electric motor?

Compiled By: Ashutosh Pandey

Composed By: Pooja

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Fuels

This Sample Paper Based on CBSE Science & Technology Class X Syllabus

1. The amount of charcoal obtained from 1Kg of wood by destructive distillation is approx.
a. 500gm
b. 750gm
c. 400gm
d. 250 gm

2. The percentage of methane in biogas is approx.
a. 35%
b. 40%
c. 30%
d. 65%

3. Which of the following forms of coal has maximum percentage of carbon.
a. bituminous
b. peat
c. anthracite
d. liquite

4. Coal gas is a mixture of
a. carbon dioxide, hydrogen and methane
b. hydrogen, butane and carbondioxide
c. methane, hydrogen and carbonmonoxide
d. none of the above.

5. The calorific value of LPG is about
a. 30 KJ/g
b. 50 KJ/g
c. 80 KJ/g
d. none of these

6. The main constituent of LPG is
a. methane
b. butane
c. propane
d. none of these

7. Natural gas mainly consist of
a. methane
b. butane
c. propane
d. ethane

8. Which of the following is not a processed fuel
a. charcoal
b. petrol
c. coal
d. coalgas

9. Which of the following is a secondary fuel
a. wood
b. natural gas
c. petroleum
d. coal gas

10. Which of the following fuels has the highest calorific value.
a. biogas
b. coal
c. L.P.G
d. wood

11. Which of the following fuels has the least calorific value.
a. hydrogen
b. biogas
c. kerosene
d. dung cakes

12. Which of the following compound liberates maximum heat when it undergoes combustion.
a. hydrogen
b. butane
c. ethane
d. methane

13. The fractional distillition of coal tar yields
a. benzene
b. carbon monoxide
c. carbon tetrachloride
d. none of the above

14. One of the following is not obtained on fractional distillation of petroleum.
a. paraffin wax
b. asphalt
c. coal gas
d. petrol

15. In Chulhas gaps are left between the logs
a. to cut off the supply of air
b. to make space for the collection of ash
c. to allow air and facilitate fuel burning
d. none of the above

16. Kerosene burns more rapidly than coke because
a. it has got more oxygen in it than coke
b. its ignition temperature is low
c. none of the above
d. all of the above

17. Which of the following flame is produced by a candle
a. blue flame
b. yellow luminous flame
c. non luminous flame
d. none of he above

18. Bio-gas is a mixture of
a. CO2+H2+CH4
b. CO2+SO2+CH4
c. CO2+CH4+H2+H2S
d. None of the above

19. Charcoal is mainly
a. carbon and graphite
b. carbon
c. carbon and silica
d. graphite

20. Bagasse is nothing but
a. wet wood when dried and chopped.
b. sugarcane from which juice has been extracted.
c. wheat chaff.
d. none of the above.

21. Which of the following has the highest calorific value
a. oxygen
b. hydrogen
c. charcoal
d. methane

22. We can boil water in a paper cup without burning it because
a. the water soaks the paper and hence the paper does not burn.
b. paper has a higher equilibrium temp.
c. the heat given by the flame is quickly transferred from the boiling water ,preventing the paper from heating up to its ignition temp.
d. none of the above.

23. A piece of cloth soaked in a mixture of alcohol & water when brought in contact with a match stick catches fire immediately but extinguishes without burning the cloth, because
a. the smoke produced during burning extinguishes burning.
b. alcohol burns of quickly and the presence of water does not allow the reaching of ignition temperature of cloth.
c. none of the above
d. all of the above.

24. Logs of wood can be set to fire quickly by pouring kerosene or oil on it and then bringing a flame to it. Because
a. kerosene has a lower ignition temperature and burns quickly and heat produced due to this is enough to reach the ignition temperature of wood.
b. kerosene on burning liberates oxygen. Which is essential for the burning and thus helps in acheiving the ignition temperature of wood.
c. none of the above
d. all the above

25. Which of the following liberates maximum heat
a. methane
b. butane
c. propane
d. ethane

26. Which of the following is not the attribute of a good fuel.
a. low calorific value
b. low content of non volatile material.
c. moderate rate of combustion.
d. none of the above

27. Natural gas is called a clean fuel because
a. after it is drilled out it is purified and then supplied as fuel.
b. it burns without producing any smoke.
c. none of the above
d. both a & b

28. Calorific value of a fuel may be defined as
a. The amount of heat produced when 1kg of a fuel is completely burnt.
b. The amount of heat produced when 10gms of a fuel is completely burnt.
c. The amount of heat produced when 1 gm of a fuel is completely burnt.
d None of the above

29. The relationship between the two units of calorific value is
a. 1KWH/Kg=5.6 Kj/g
b. 1 KWH/Kg= 2.6 KJ/g
c. 1 KWH/Kg= 3.6 KJ/g
d. None of the above.

30. On complete combustion 1Kg. Of wood produces 17000KJ of energy. What is the calorific value of wood.
a. 17 KJ/g
b. 34 KJ/g
c. 1.7 KJ/g
d. 0.017 KJ/g

Edited and Compiled By

(Ashutosh Pandey)

Director Education Mantra

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Subjects

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Assignment Motion IX

MotionAssignment 1

education Mantra provide you complete study of Mathematics, Science. These quetions are based on C.B.S.E Class IX Science and Technology Syllabus (CCE Based). Solve them and send your answers to Education Mantra.Our Experts provide you the right answers after evaluating your knowledge.
1) What are the common characteristics of a moving body?
2) What do you mean by reference point? Give an example.
3) Distinguish in between Distance and Displacement?
4) How we can say displacement will be zero but Distance not?
5) Write the name of two vector quantities and how they?
6) Write the name of two scalar quantities and give reason to become scalar.
7) A body is moving in a 7 cm radius circular path then find the distance and displacement in (i) a complete revolution. (ii) in half revolution.
8) Define motion?
9) What is the unit of displacement/
10) A body moves a distance of 3 km towards East, than 4 km towards north, and finally 9 km towards East: (i) What is total distance travelled. (ii) What is the resultant displacement?
11) What is uniform motion?
12) Define velocity and speed.
13) What is the average speed?
14) A car moves 30 km at a uniform speed of 40 km/hr and next 30 km at the speed of 20 km/h. find its average speed.
15) Convert a speed of 108 km/hr into m/s.
16) Convert the speed of 6 m/s into km/hr.
17) What is non uniform motion? Give two examples.
18) What is velocity?
19) Define uniform velocity.
20) A car travels a distance of 200 km from Delhi to Ambala towards north in 5 hours. Calculate (i) speed, and (ii) velocity of car in journey.
21) What is the difference in between velocity and speed?
22) Under which condition the average velocity will be equal to the average speed.
23) When the body said to have in uniform velocity?
24) What is the acceleration?
25) Acceleration is a vector or scalar quantity. Define.
26) What is the S.I unit of acceleration?
27) What is uniform acceleration? Define with velocity time graph.
28) What is meant by negative acceleration? Define with an example.
29) What is retardation? What’s its unit?
30) What is the first equation of motion? Prove it by graphical method.
31) Prove that v = u+at.
32) Write the second equation of motion and find it from first.
33) Graphically prove second equation of motion.
34) What is third equation of motion? Prove it with the help of first and second equation of motion.
35) A train starting from stationary position and acquire the speed of 36 km/hr in 10 minutes, find its acceleration.
36) What is meant by uniform circular motion?
37) How the linear motion is differ from circular motion?
38) Name the type of motion when the body has constant speed but not constant velocity.
39) Write the formula for the speed of a body moving in a circular path. Define the symbols use.
40) Give two examples of circular motion.
41) With a constant speed how the velocity changes in circular motion?
42) Name the force which brings the circular motion possible. Explain.

Compiled by: Ashutosh Pandey for Education Mantra