MATHS PAPER OF STD 10

                             MATHS PAPER OF STD 10

                                    BY: – MEET K. DAVE

 

SECTION – A

1. Write a quadratic equation whose roots are 3+Ö3 and 3-Ö3.
2. Show that any positive odd integer is of the form 4q+1 or 4+3, where q is some integer.
3. If tanB = ¾, and A+B = 90°, then find the value of cotA.
4. If the zeros of the polynomial f(x) =x³-3x²+x+1 are (a-b) , a and (a+b)  find the value of and b.
5. A cylinder, a cone and a hemi-sphere have equal base and same height. What is the ratio of their volumes?
6. Give an example of polynomial p(x), g(x), q(x) and r(x), satisfying

      P(x) = g(x).q(x) + r(x), deg r(x) = 0

1. A die is thrown once. What is the probability of getting an even prime number?
2. Find the 20^th term of the sequence -2, 0, 2, 4 ————.
3. Find the perimeter of the sector whose base radius is 14 cm and central angle is 120°.
4.  For what value of ‘k’ the following pair of linear equations has infinitely many solutions?

      10x + 5y – (k-5) = 0 and 20x + 10y – k = 0.

                                                    

 

SECTION – B                                    [2marks each]

 

Q11.    Prove that unit place digit of 6ⁿ cannot be zero.

Q12.    Find the value of ‘k’ for which the points (8,1), (k, 4), (2, –5) are collinear.

Q13.    Two AP’s have the same common difference. The difference between their 100^th terms is 100, what is difference between 100000^th terms?

Q14.    Find the value(s) of ‘k’ for which ky(y–2) + 6 = 0 has two equal roots.

Or

Find the real roots of the equation 4x² +3x+5 = 0 by the method of completing square.

Q15.    If A, B, and are interior angles of a triangle ABC, then show that sin

 

SECTION C

 

1. Find the HCF of  426 and 576 using Euclid’s division algorithm

OR

      Prove that no number of the type  be perfect square

1. m and n are zeros of  . Find the values a and c   if
2. Draw the graph of  and  and show that there is a unique solution .Calculate the area bounded by these lines and x-axis
3. A polygon has 10 sides .The lengths of the sides starting with the smallest form an AP .If the perimeter of the polygon is 420 Cm and the length of the longest side is twice that of the shortest side .Find the first term and the common difference of the AP
4. Prove that

OR

      Prove that  , Using the identity

 

 

1. Observe the graph and state whether the quadrilateral ABCD is a parallelogram .Justify your answer .

 

 

 

 

 

 

 

 

 

 

 

 

1. Find the area of the triangle formed by joining the mid points of the sides of the sides of triangle whose vertices are
2. Draw a triangle ABC with side  ,  then  construct a triangle whose sides are  times the corresponding sides of
3. Prove that the opposite sides of a quadrilateral circumscribing a circle subtend supplementary angles at the centre of the circle

 

 10. Define:-altitude,median,adjacent side.

 

 

 

 

 

 

 

 

 

 

                                                            SECTION- D

 

26.  In Birla auditorium the number of rows was equal to the number of seats in each row. When the number of rows was doubled and the number of seats in each row was   reduced by 10, the total no. of seats increased by 300. How many rows were there?

 

27 Two pillars of equal height stand on either side of a roadway which is180 m wide   From a point on the roadway between the pillars, the angles of elevations of the top of the pillars are 60˚ and 30˚. Find the height of the pillars and the position of the point.

 

                                                                                   

                                               

                                                                                                                                                                                

           28. State and prove the converse of Pythagoras theorem. Using it prove that triangle PQR is right angled if QS² =PS×SR and QS⊥PR.

 

29. Water is flowing at the rate of 15 km per hour through a pipe of diameter 14 cm into a rectangular tank which is 50 m long and 44 m wide. Find the time in which the level will rise by 21cm.

                                                                 

 

                                         

30. For the following frequency distribution draw the less than give and using it find the median.

 

Marks obtained	50-60	60-70	70-80	80-90	90-100
No. of students	4	8	12	6	6

                                             

                                                                                                                                                                                    geniusdave.wordpress.com

 

 

 

SCIENCE OBJ. STD X GSEB

   BY: – MEET K. DAVE

                                   

                                        

1. Metal _________ is in liquid state. (Br, Na, Ga, Au)
2. Chemical name of washing soda is__________
3. Which organism shows phagocytes?
4. MinaMata disease was first observed in _______
5. The magnification of plane mirror is ________
6. Blue + red = ______
7. What is the function of incisors?
8. From where is oxygen released in photosynthesis?
9. Which glass is used as an insulator material?
10.  State Snell’s law.
11.  What is critical angle?
12.  What are complementary colors?
13.  State Ohm’s law.
14.  What is meteorite?
15.  Who gave the ph scale?
16.  Define- molarity.
17.  Define- calcination.
18.  State equation of photosynthesis.
19.  What are carcinogens?
20.  If focal length of convex lens is 25cm, find its power.
21.  Define-electric power.
22.  Name the terrestrial planets.
23.  Name the Jovian planets.
24.  What is rate of reaction?
25.  Unit of rate of reaction.
26.  Unit of molarity.
27.  Formula of silver bromide.
28.  3 parts of ileum.
29.  Location of vermiform appendix.
30.  Full name of BOD.
31.  Dispersion of light.
32.  Use of astronomical telescope.
33.  Use of compound microscope.
34.  Electric current.
35.  Electroplating.

 

                                                                                                 Meet K. Dave

                                                                                      (meetdave06@gmail.com)

SCIENCE OBJECTIVES OF STD 10

              BY:-MEET K.DAVE

• What is lime light?

• What is focal length?

• What are complementary colors?

• What is electroplating?

• Give faraday’s law.

• Types of teeth.

• Mirror formula.

• Define:- magnification

• Power of lens.

• Dry River on which planet?

• Name of Jovian planets.

• Photosynthesis reaction.

• Nutrition in human.

• Respiration organ of insects.

• Draw Calvin cycle.

• Full name of NADP.

• Chemical formula of washing soda.

• Chemical formula of dead burnt plaster.

• Chemical formula of baking soda.

• Chemical formula of slag.

• By which method we get pure alumina?

• Chemical formula of cryolite.

• Chemical formula of glass.

• Principle of Volta’s cell.

• Principle of fuse.

•  Total resistance of series for 2 resistors.

• Which type of connection will you use in your home?

• Statement of Ptolemy.

• Statement of Nicholas Copernicus.

• Satellite of mars.

STORY:-DEATH AND LORD INDRA’S PARROT

    EVERYONE WHO TAKES BIRTH IN THIS WORLD HAS TO DIE 1 DAY.

    IT WAS A MEETING OF ALL THE GODS IN HEAVEN. LORD INDRA WAS ALSO SITTING ON HIS THRONE.HIS FAVOURITE PARROT WAS PERCHED ON 1 OF THE ARMS OF THE THRONE. LORD INDRA LOVED HIS PARROT VERY MUCH.

   SOON  THEREAFTER, THE ARRIVAL OF THE LORD OF DEATH WAS ANNOUNCED. THE NEXT MOMENT, ENTERED THE LORD OF DEATH IN THE CONFERENCE HALL. THE LORD OF DEATH CAST A GLANCE AT THE PARROT AND SMILED. SEEING HIM SMILING, THE PARROT BEGAN TREMBLING WITH FEAR, THE GODS REQUESTED LORD OF DEATH TO SPARE PARROT’S LIFE AS IT WAS VERY DEAR TO LORD INDRA.

     “I’VE NO AUTHORITY IN SUCH MATTERS,”SAID LORD OF DEATH. “YOU’LL HAVE TO SPEAK TO DESTINY IN THIS RESPECT.”

      SO THE REQUEST TO SPARE THE LIFE OF PARROT WAS MADE TO DESTINY. BUT DESTINY TOO EXPRESSED HER INABILITY TO TAKE A FINAL DECISION WITH RESPECT TO THE LIFE AND DEATH OF LORD INDRA’S PARROT. DESTINY SAID, “I’M AFRAID, YOU WOULD HAVE TO APPROACH DEATH, WHO WILL PASS THE FINAL  JUDGEMENT IN THE MATTER. “

     THE MATTER WAS, AT LAST, REFERRED TO DEATH. AND THE MOMENT DEATH LOOKED AT THE PARROT, IT DIED. THE GODS BECAME SAD.

     LORD OF DEATH CONSOLED THEM. “DEATH IS THE FINAL DESTINY OF EVERY LIVING BEING. BE IT A KIND OR A BEGGAR. THERE IS NO ESCAPE FROM THIS UNIVERSAL TRUTH

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REMEDIES FOR DANDRUFF

Remedies For Dandruff

A person’s entire body surface continuously sheds dead skin cells. Dandruff, the shedding of dead skin cells from the scalp at an excessive rate, due to dehydration of your scalp skin, is the result of the normal growing process of the skin cells of the scalp. Dandruff is a bothersome problem that almost every one of us has.

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Two types of Dandruff:

1.Pityriasis-capitis:

• It is the simple kind consisting of white dry flakes falling from the scalp. The result is due the rate at which the scalp sheds its dry skin cells, which in turn depends on the health and diet of the individual stress, too seems to be related.

2.Seborrhea Dermatitis: If the scalp is very greasy, an individual might end up with this type of dandruff, which is thick, oily, scaly, crusted and weeping.

• This condition almost always needs medical care and attention, but if it is mild you can treat it at home by either using an anti-dandruff shampoo or trying home remedies. The best remedy however is to wash hair regularly with a shampoo containing selenium compound or cool tar extracts. Consult a dermatologist if the problem is severe or persists.

Household remedy tips for dandruff:

Besides the anti-dandruff creams, lotions, oils and shampoos available in the market, there are many simple household remedies to fight dandruff described below:

• Hot oil therapy is one method to cure dandruff. Massage hot oil into the scalp at bedtime. Next morning an hour before bath, rub lemon juice mixed with cosmetic vinegar (mix 1:2 ratio) into the scalp. Give the hair a good wash with egg shampoo.
• Give your hair a hot steam bath. Massage hot oil with a hot damp towel and leave it on the head like a turban so that the steam can fight dandruff. You may use two towels for this purpose. This will improve the moisture of your scalp skin to fight against forming dandruff.
• After giving your hair a good wash, boil five teaspoons of dried and used tealeaves in limewater, use it as a last rinse after shampoo, to give your scalp skin, the factors of anti-dandruff formation. This gives your hair… a lustrous shine and provides nourishment too.
• Instead of shampooing, massage handfuls of baking soda into the hair and scalp to absorb oil and to loosen dead skin on scalp. Rinse thoroughly and use no other shampoos. While initially the hair may seem dry, after several weeks, dandruff will go off and hair will be smooth and shiny.

More remedies for Dandruff:

Massage it in: When shampooing, gently massage your scalp with your fingertips to help loosen scales and flakes. But do not scratch your scalp that can lead to sores that are worse than the dandruff.

Lather twice: Always lather twice with a dandruff shampoo. Work up the first lather as soon as you step into the shower so the shampoo has sufficient time to work. Leave it on until you are just about finished with your shower. Then rinse your hair very carefully. Follow that with a quick second lather and rinse. The second rinse will leave just a bit of the medication on your scalp so it can work until your next shampoo.

Don’t be too harsh to your soft hair: If tar-based shampoos, or any other dandruff preparations are too harsh for everyday use, alternate them with your regular shampoo.

Let the sunshine: A little sun exposure is good for dandruff. That’s because direct ultraviolet light has an anti-inflammatory effect on scaly skin conditions. And it may explain why dandruff tends to be less severe in summer. Don’t sunbathe; just spend a little time outdoors. Limit sun exposure to 30 minutes or less per day. And wear your normal sunscreen on exposed skin. You have to balance the sun’s benefit to your scalp against its harmful effect on your skin in general.

SCIENCE TEST OF STD 10 L-1&2

1.     Who gave the principle of Electromagnetic induction?

2.     In our country _________ voltage and _______frequency currents are used in our house.

3.     The diameter of hair is ________nm.

4.     Tensile strength of steel is ______ times than that of carbon nanotubes.

5.     magnetic field is inversely proportional to the ________.

 

 

       Q2. 1. What is nanotechnology?

              2. What is solenoid?

              3. Full name of STM.

              4. Full name of MWNT.

              5. What is armature?

              6. What is electromagnetic induction?

 

       Q3.1. Advantages of AC current.

             2. Right Hand Thumb Rule.

             3. Bucky Ball.

             4. What can you expect to be improved in near future due to

              Nanotechnology?

             5. Tensile Strength and Thermal Conductivity.

             

       Q4.1. Electric Generator.

             2. Health Care and Security.

 

                 

 

 

 

 

 

 

GSEB SCIENCE OBJ. BY MEET K. DAVE

1. Unit of rate of reaction.
2. Example of exothermic reaction
3. criteria of chemical equilibrium
4. 2 types of equilibrium
5. Active mass law.
6. Ph of acid, base and neutral.
7. What is rotation and revolution?
8. Jupiter is ______ times than earth.
9. Saturn is ______ times than earth.
10. What is remote sensing satellite?
11. Reactivity series.
12. Which furnace is used to make iron?
13. unit of gold
14. 2 properties of metal.
15. What is galvanization?
16. Which lens should be used to get rid of myopia?

                                                                                                            MEET K. DAVE

 

SCIENCE TEST

SCIENCE TEST FOR STD 10

BY: – MEET K. DAVE

 

LESSON: – 07(UNIVERSE)

 

                    sec a (any 5)                                 10 marks

 

1. state the views of astronomers.

2. difference:-terrestrial & jovian planet

3. write in short about mercury planet

4. what are stars? what are they made up of?

5. write in short about comet.

6. what are nakshatras?

 

                   sec b (any 4)                              12 marks

 

7. aakash ganga

8. thoeries for origin of universe.

9. construction of a space shuttle.

10. fuel used in rocket.

11. equatorial & polar orbit.

 

                  sec c (any 2)                                8 marks

12. artificial satellites & their uses.

13. remote sensing satellite &uses

14. state artificial satellites launched in

space and working of space shuttle in space.