Electromagnetism Worksheet for 10th class

Magnetism Worksheet

1.Name the type of current. (a) used in household supply (b) given in cell (CBSE (CCE) 2011)

2.  Name the physical quantities of electromagnetic induction. (CBSE (CCE) 2012)

3.  Give one application of electromagnetic induction. (CBSE (CCE) 2012)

4.  Name any two appliances which are based on the application of heating effect of electric current. (AI 2009C)

5.  What constitutes the field of a magnet? (DELHI 2006)

6.  A compass needle is placed near a curtp for the following cases, and give reason for the same in each case.

a. Magnitude of electric current in the wire is increased

b. The compass needle is displayed away from the wire. (CBSE (CCE) 2012)

7.  Explain the role of fuse in series with any electrical appliance in an electric circuit. Why should a fuse with defined rating for an electric circuit not be replaced by one with a larger rating? (CBSE (CCE) 2011)

8.  What is meant by the term frequency of an alternating current? What is the value in India? Why is an alternating current considered to be advantageous over direct current for long range transmission of electric energy? (CBSE SAMPLE PAPER 2009)

9.  What is an electromagnet? Draw a circuit diagram to show how a soft iron piece can be transformed into electromagnet. (DELHI 2008)

10.  With the help of neat diagram describe how you can generate induced current in the circuit. (DELHI 2006C)

11.  a. Mention effect of electric current on which the working of an electrical fuse is based.

          b. Draw a schematic labeled diagram of a domestic circuit which has a provision of a main base, meter, one light bulb and a socket.

          c. Explain the term overloading of an electric circuit. (CBSE (CCE) 2012)

12.  a. Describe an activity to demonstrate the pattern of magnetic field lines around a straight conductor carrying current.

          b. State the rule to find the direction of magnetic field associated with a current carrying conductor?

          c. What is the shape of a current carrying conductor whose magnetic field pattern

......

State the rule that is used to find the direction of field acting at a point near a current carrying straight conductor.

Q2. Distinguish between Permanent magnet and Temporary magnet

Q3. What are the factors on which the magnetic field due to a current carrying solenoid depends?

Q4. Write any 3 methods of demagnetising a permanent magnet ?

Q5. What is an electromagnet?. How does it differ from a permanent magnet ? State three factors on which the strength of an electromagnet depends.

Q6. A proton is moving with velocity 104 m/s parallel to the magnetic field of intensity 5T. Find he force on the proton

Q7. Mentions the angle between a current carryings conductor and magnetic field for which the force experienced by fair current carrying conduct is the magnetic field the larger.

Q8. Explain the function of fuse in a domestic electric circuit? An electric oven having power rating 2000 W, 220 V is used in an electric circuit having a fuse of 5A rating. What is likely to happen when the oven is switched on? Explain

Q9. Write one difference between direct current and alternating current. Which one of the two is mostly produced at power stations in our country? Name one device which provides alternating current. State one important advantage of using alternating current.

Q10. Can two magnetic lines of force intersect each other? Give reasons in support of your answer.

Q8. If a soft iron piece is buried under the surface of earth in the north and south direction, then:

• It will acquire properties of a magnet

• Its properties will not change

• It will behave like an insulator

• Can’t say with surety

Q9. Force acting on a stationary charge Q in the magnetic field B is:

• BQV

• BV/Q

• Zero

• BQ/V

Q10. A wire of length ‘ℓ’ is placed in a magnetic field B. If the current in the wire is I, then maximum magnetic force on the wire is:

• BI ℓ

• B/Iℓ

• Iℓ /B

• I/Bℓ

Section 2 - Subjective

Question 1 How can you show that the magnetic field produced by a given electric current in the wire decreases as the distance from the wire increases?

Question 2 What is the advantage of the third wire of earth connection in domestic appliances?

Question 3 How is the strength of the magnetic field at a point near a wire related to the strength of the electric current flowing in the wire?

Question 4 On what effect of an electric current does an electromagnet work?

Question 5. With the help of a neat-diagram, describe how you can generate induced current in a circuit.
Question 6 Explain terms: (a) overloading and (b) short-circuiting

Question 7 List in tabular form two major differences between electric motor and electric genrator

Question 8 Explain the function of earth wire. Why is it necessary to earth metallic appliances?

Question 9 All household appliances are connected in parallel. List two advantages of this type of arrangement.

10.Explain briefly two different ways to induce current in a coil. State the rule which determines direction of induced current.

Question 11 (a) A stationary charge is placed in a magnetic field. Will it experience force? Give reason and justify your answer.
(b) On what factors does the direction of force experienced by a current carrying conductor when placed in a magnetic field depends?
(c)  Under what conditions is the force experienced by a current carrying conductor placed in a uniform magnetic field is maximum.

Question 12 List four important features of domestic electric circuit. Draw a diagram of common domestic circuit showing live, neutral and earth wires.

Identify the poles of a magnet in the figure.

What is the direction of magnetic field lines outside a bar magnet ?  (CBSE 2010, 2011)

Question 3.
What does crowding of magnetic field lines indicate ? (CBSE 2010, 2011)
                                             Or
What does the degree of closeness of magnetic field lines near the poles signify ? (CBSE 2012)


Question 4.
At what place of the magnet are the magnetic field lines denser ? [CBSE (

Question 5.
What is meant by magnetic field ? [CBSE (Delhi) 2007, 2009, 2014]

Question 6.
How is the direction of magnetic field at a point determined ? [CBSE (Delhi) 2007]


What is SI unit of magnetic field ?

What is the direction of magnetic field lines inside a bar magnet ?

Question 9.
Define a magnetic field line ? (CBSE (All India) 2006, 2010, 2015)
                                        Or
What are magnetic field lines ? (CBSE 2011, 2013)

Give two uses of a magnetic compass. (CBSE 2013)


Question 11.
How is the strength of the magnetic field around a wire related to the strength of the electric current flowing in the wire ? (CBSE 2004)

Question 12.
How can it be shown that magnetic field exists around a wire through which direct current is passing ?
[C.B.S.E; (Delhi) 2004]

Question 13.
What is the nature of magnetic field lines around a current carrying wire ?


Question 14.
State the rule used to determine the direction of magnetic field produced around a straight conductor carrying current. [CBSE (Delhi) 2009; CBSE (All India) 2009, 2011, 2012, 2015]

State the rule to determine the direction of a force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular. (CBSE 2013, 2014, 2015)

compass needle shows deflection when brought near a current carrying conductor. Why ? (CBSE 2015)

Question 17.
Draw a sketch of the pattern of field lines due to a current flowing through a straight conductor.
[CBSE (Delhi) 2009, 2011]

Draw the magnetic field lines through and around a single loop of wire carrying electric current.

Draw the pattern of magnetic field lines of the field produced by a current carrying circular loop.

What is a solenoid ? (CBSE (Delhi) 2009, 2010, 2011, 2012, 2013, 2015)

Question 21.
Write one application of magnetic field of current caWhat does the direction of thumb indicate in the right hand thumb rule ?
Answer:
Direction of the flow of current.

Question 24.
How is an electromagnet made ?


Question 22.
Draw the pattern of field lines of magnetic field through and around a current carrying soleniod.
(CBSE (Delhi) 2009, 2011

Write an expression for the force acting on a conductor of length l carrying current (I) and placed perpendicular to the magnetic field (B).

carbon compounds worksheets for practice 10th

1.An organic compound A on reduction gives compound B molecular formula  C2H6 which when reacted with chlorine gives compound C .
A.identify a,b,c
B.write 2 reactions involved  

2)A.Name the functional groups organic compounds that can be hydrogenated .
B.with the help of reactions explainpricess of hydrogenation
C.mention the conditions needed
D.name one change in physical property with the formation of produ t
E.name any one natural sour e of organic compounds that can be hydrogenated

3.).An organic compound A with molecular formula C2H60 on oxidation I'm presence of oxidising agents gives compound B
A.identify a and b
B write reaction
C.what do you mean by oxidign agents
D.give 2 examples of oxidising agents
E.identify c2H60 and write its next 2 homologues 


4.A test tube contains brown liquid in it .the colour of liquid remains unchanged when methane is passed into it ,but changes when ethene is passed
A.identify brown liquid
B.why is did not change with metha ne and changed with ethene
C.justify with reaction
D.what type of reactions are this
E.how many moles of hydrogen is needed to break 2 double bonds

5.the formula of Ester is C3H7COOC2H5.
A.write the formula of acid and alcohol from which it's obtained
B.justify with reaction
C what is the reagent used here
D .what type of reactions are this
E.NaMe the Ester given C5H11COOC6H13

6).3 mL of ethanol is taken in a test tube and warmed gently in a water bath. A 5% solution of alkaline potassium permanganate is added first drop by drop to this solution, then in excess.
(A) How is 5% solution of KMnO4 prepared?
(B) State the role of alkaline potassium permanganate in this reaction. What happens on adding it in excess?
(C) Write chemical equation of this reaction.
D.what is other oxidising agent we can use here
E.why this reaction is called oxidation reactions

7).A carbon compound ‘P’ on heating with excess cone. H2SO4 forms another carbon compound ‘Q’ which on addition of hydrogen in the presence of nickel catalyst forms a saturated carbon compound ‘R’ One molecule of ‘R’ on combustion forms two molecules of carbon dioxide and three molecules of water.
A)Identify P, Q and R  2 marks
B) write chemical equations for the reactions involved.  3 marks

8).carboxylic acid (molecular formula, C2H4O2) reacts with an alcohol in the presence of an acid catalyst to form a compound ‘X’. The alcohol on oxidation with alkaline KMnO4 followed by acidification gives the same carboxylic acid C2H4O2.
A) Write the name and structure of
(i) carboxylic acid,  1 mark
(ii) alcohol and.       1 mark
(iii) the compound ‘X’  1 mark
Iv) Write all reactions involved  2 marks

9).dropping a small piece of sodium in a test tube containing carbon compound ‘X’ with molecular formula C2H6O, a brisk effervescence is observed and a gas ‘Y’ is produced. On bringing a burning splinter at the mouth of the test tube the gas evolved burns with a pop sound.
A) Identify ‘X’ and ‘Y’. 2marks
B)Also write the chemical equation for the reaction. 1 mark
C) Write the name and structure of the product formed, when you heat ‘X’ with excess cone, sulphuric acid. 

10).Write the name and molecular formula of an organic compound having its name suffixed with ‘ol’ and having two carbon atoms in its molecule.
2marks
Write balanced chemical equation to indicate what happens when this compound is heated with excess cone. H2SO4 and the name of main product formed.2 matks
Also state the role of cone. H2SO4 in the reaction. 1 matks

11).An organic compound ‘X’ on heating with cone. H2SO4 forms a compound ‘Y’ which on addition of one molecule of hydrogen in the presence of nickel forms a compound ‘Z’. One molecule of compound ‘Z’ on combustion forms two molecules of CO2 and three molecules of H2O.
Identify giving reasons the compounds ‘X’, ‘Y’ and ‘Z’.3marks
Write the chemical equations for all the chemical reactions involved. 2marks

12).Give a chemical test to distinguish between saturated and unsaturated hydrocarbon. 1marks
(b) Name the products formed when ethane bums in air. 1marks
Write the balanced chemical equation for the reaction showing the types of energies liberated.
(c) Why is reaction between methane and chlorine in the presence of sunlight considered a substitution reaction? 1mark
D)Justify with reaction 1mark

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Worksheet 2 

Convert logs into exponential form

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Write as single logorthm

Worksheet 6 

Find value of logs if logs values are given

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Worksheet 8

chemical reactions worksheets

Question 1. Write a chemical equation when magnesium metal reacts with aqueous hydrochloric acid to produce a solution of magnesium chloride and hydrogen gas.
Question 2. Can a combination reaction be redox reaction.
Question 3. Why do we apply paint on iron articles?
Question 4. What are the different types of reactions?
Question 5. What is a decomposition reaction ? Give example.
Question 6. Define displacement reaction.
Question 7. What happens when sodium reacts with water?
Question 8. Write the chemical equation and name the reaction when a solution of sodium chloride is mixed with a solution of silver nitrate and a white precipitate of silver chloride is formed.
Question 9. Why does the color of copper sulphate solution change, when an iron nail is dipped in it?
Question 10. Why is photosynthesis considered as an endothermic reaction?
Question 11. Potassium chlorate (KCIO3) on heating forms potassium chloride and oxygen. Write a balanced equation for this reaction.
Question 12. Give an example of a chemical reaction characterized the change in temperature.
Question 13. What type of chemical reactions take place when:
(a)Limestone is heating?
(b)A magnesium wire is burnt in air?
(c)Electricity is passed through water?
(d)Ammonia and hydrogen chloride are mixed?
(e)Silver bromide is exposed to sunlight?
Question 14. To balance a chemical equation, can we change the formula of either reactants or products?
Question 15. Why should a magnesium ribbon be cleaned before burning in air?
Question 16. If an of the following reactions occurs spontaneously, write the balanced net ionic equation. If not, write no reaction&
(a)Pb + Zn2+ _____ Pb2+ + Zn
(b)Fe + H+ _____Fe2+ + H2
(c)Cu + Ag+ _____ Cu2+ + Ag
(d)Cr + Zn2+ _____Cr2+ + Zn
Question 17. Nickel (II) nitrate is prepared by heating nickel metal with liquid dinitrogen tetroxide. In addition to the nitrate, gaseous nitrogen monoxide is formed. Write the balanced equation.
Question 18. Why is the amount of gas collected in one of the test tubes in electrolysis of water double of the amount collected in the other? Name this gas.
Question 19. Write a balanced chemical equation with state symbols for the following reactions:-
i.Solution of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.
ii.Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.
Q1.  What happens chemically when quick lime is added to water?

Q2.  How will you test for the gas which is liberated when HCL reacts with an active metal?

Q3.  What is an oxidation reaction? Is it exothermic or endothermic? Give one example of oxidation Reaction.

Q4.  Give an example of photochemical reaction.

Q5.  Give an example of a decomposition reaction. Describe any activity to illustrate such a reaction by heating.

Q6.  Why is respiration considered as exothermic process?

Q7.  Balance the following chemical equation.

           Fe(s) +H2O(g) = Fe3O4 + H2(g)

           MnO2 + HCL = MnCl2 + Cl2 + H2O

           HNO3 + Ca(OH)2 = Ca(NO3)2 + H2O

Q8.  On what basis is a chemical equation balanced?

Q9.  State any two observations in an activity suggesting the occurrence of a chemical reaction.

Q10.  Name a reducing agent which may be used to obtain manganese from manganese dioxide.

Q11.  What change in colour is observed when silver chloride is left exposed to sunlight? Also mention the type of chemical reaction.

Q12.  Define a combination reaction. Give one example of an exothermic combination reaction.

Q13.  What is observed when a solution of potassium iodide is added to lead nitrate solution?

              What type of reaction is this? Write a balanced chemical equation for this reaction.

Q14.  Distinguish between an exothermic and an endothermic reaction.

Q15.  Distinguish between a displacement and a double displacement reaction.

Q16.  Identify the type of reaction in the following:

              Fe + CuSO4(aq) = FeSO4(aq) + Cu(s)

              2H2 + O2 = 2H2O

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