Sub- science
- Balance the chemical eqation-
Pb(NO3)2 (S) ______2PbO (S) + NO2(g)+ O2 (g)
2.What happens when - lime stone is heated ii) carbon di oxide is passed through lime water? Write equation.
3.What is water of crystallization? How will you show that copper sulphate crystals contain water of crystallization?
4. Write the different components and formula of baking powder. What is the role of each of them?
5. Why do HCl and HNO 3 show acidic property in aquoussolution,but C2H5OH and glucose do not show acidic character?
6.Name the compound fomed by the action of chlorine on lime water.
Write the equation also.
7.Whymatals usually not form hydrogen gas with Nitric acid.
8.Explain the method of electrolytic refining.
9.What are alloys? Give3 examples with the composition of each metals in them.
10. Write the structural and electronic formula of any one isomer of n-hexane and n-heptane.
11.What is an ester? Write an activity to form an ester.
12Why detergents are effective in hard water but soaps are not?
13.Compare the physical and chemical properties of ethanol and ethanoic acid.
class –X –C
1) Write all revision questions and answers.
2) Mark the following on the given map of India:-
a) An iron ore exporting port.
b) A location where bauxite is found.
c) Mumbai high natural gas reserve.
d) HVJ natural gas pipeline.
e) Nuclear power station in Rajasthan.
3) Mark the following on the political map of India:-
a) The place where the cotton mill workers satyagraha was organized in 1918.
b) Place associated with jallianwallaBagh Massacre.
c) Place where a police station was set on fire by enraged people.
d) Place where Indian national congress session was held in 1929.
e) Place where Gandhiji broke salt law.
4) Make the project or prepare cd on the multi-purpose river valley projects:-
a) Narmada BachaoAndolan.
b) Tehri Dam Andolan.
REAL NUMBERS
Q1. Write Fundamental theorem of Arithmatic.
Q2. Find HCF of 12576 and 4052 by Euclid Division Algorithm or by prime factorization method find HCF & LCM.
Q3. If LCM (480, 672) = 3360 , find HCF ( 480 , 672).
Q4. Prove that is an irrational number.
Q5. Show that any positive odd integer is of the form 6q+1 , 6q+3 or 6q+5, where q is some integer.
POLYNOMIALS
Q1. Give one - one example of cubic polynomial for one zero , two zero and three zeroes.
Q2. Find a quadratic polynomial with the given numbers as the sum and product of its zeroes respectively ¼ and -1.
Q3. Find the zeroes of the quadratic equation x2 – 2x – 8 and verify the relationship between the zeroes and their
coefficients.
Q4. Check x2 – 3x + 1 is a factor of the second polynomial x5 – 4x3 + x2 + 3x + 1 by applying the division algorithm.
Q5. Obtain all the zeroes of 3x4 + 6x3 - 2x2 – 10x – 5 , if two of its zeroes are and .
Q6. Find all the zeroes of 2x4 - 3x3 - 3x2 + 6x – 2 , if two of its zeroes are and .
Q7. Divide x 4 - 3 x 2 + 4 x + 5 by x 2 + 1 - x
PAIR OF LINEAR EQUATIONS IN TWO VARIABLES
Q1. A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours it can go 40 km upstream and 55 km
downstream. Determine the speed of the boat in still water.
Q2.Find the values of a and b for which the following system of linear equations has infinite number of solutions:
2x – 3y = 7
( a + b ) x – ( a + b – 3 ) y = 4a + b
Q3. For which value of k , the given system of equations has infinitely many solutions:
( k – 3 ) x + 3 y = k
K x + k y = 12
Q4. Solve x + y = a + b
a x – b y = a2 – b2
Q5. Solve the following system of linear equations graphically and find the area of region between the two lines and x axis:
2 x + 3 y = 12 and x – y = 1
Q6. A part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess. When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B , who
takes food for 26 days, pays Rs 1180 as hostel charges. Find the fixed charges and the cost of food per day.
Q7. A fraction becomes 9/11 , if 2 is added to both the numerator and the denominator. If 3 is added to both the
numerator and the denominator it becomes 5/6. Find the fraction.
SIMILAR TRIANGLES
Q1. Prove that if a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct points , the
other two sides are divided in the same ratio. ( BPT or Thales Theorem)
Q2. Prove that the ratio of the areas of similar triangles is equal to the ratio of the squares on their corresponding sides.
Q3. If the areas of two similar triangles are equal, prove that they are congruent.
Q4. Prove that the area of the equilateral triangle described on the side of a square is half the area of the equilateral
triangle described on its diagonal.
Q5. Prove that in a right triangle , the square on the hypotenuse is equal to the sum of the squares on the other two sides.
( Pythagoras Theorem)
Q6. Prove that in a triangle , if the square of one side is equal to the sum of the squares of the remaining two sides , then
the angle opposite the first side is a right angle. ( Converse of Pythagoras Theorem. )
Q7. In an equilateral triangle find its altitude and area.
Q8. In an equilateral triangle ABC , the side BC is trisected at D . Prove that 9 (AD)2 = 7 (AB)2
Q9. The perpendicular from A on side BC of a triangle ABC intersect BC at D such that DB=3CD. Prove that
2 (AB) 2 = 2 (AC) 2 + (BC) 2
QUADRATIC EQUATIONS
Q1. Find the discriminant of the quadratic equation 2x2 − 5x + 3 = 0
Q2. For what value of k does the quadratic equationhave equal roots.
Q3. A train travels a distance of 360 km at a uniform speed. If the speed had been increased by 5 km/hour,
then it would have taken 1 hours less to cover the same distance. Find the speed of the train.
Q4. Find the roots of the equation − = x ≠ - 4, 7
Q5. Find two consecutive positive integers , sum of whose squares is 365.
Q6. Find two numbers whose sum is 27 and product is 182.
Q7. An express train takes 1hour less than a passenger train to travel 132 km between Mysore and Banglore.
If the average speed of the express train is 11 km/h more than that of the passenger train. Find the
average speed of the two trains.
Q8. Two water taps together can fill the tank in 9 hours. The tap of larger diameter takes 10 hours less
than the smaller one to fill the tank separately. Find the time in which each tape can separately fill the
tank.
ARITHMATIC PROGRESSIONS
Q1. A sum of Rs 700 is to be used to give seven cash prizes to students of a school for their overall
academic performance. If each prize is Rs 20 less than its preceding prize, find the value of each
prizes.
Q2. Find the sum of the first 15 multiples of 8.
Q3. The sum of first 7 terms of an AP is 49 and that of 17 terms is 289. Find the Sum of the first n terms.
Q4. Find the sum of the series: 41+ 36 + 31 +…..to 15 terms.
Q5. If a, b, c are in AP, then show the relation between them.
Q6. How many two digit numbers are divisible by 3 ?
Q7. Which term of an AP : 3 , 15 , 27 , 39 … will be 132 more than its 54 th term?
Q8. How many terms of the AP : 9 , 17 , 25 , …… must be taken up to give a sum of 636 ?
COORDINATE GEOMETRY
Q1. Find the value of “k” for which the following points are collinear : A(2 , 3) , B(4 , k) , C(6 , -3)Q2. Find a relation between x and y such that the point P(x,y) is equidistant from the points A (3 , 6)
and B (-3 , 4).
Q3. Find the ratio in which the line segment joining A(1 , -5) and B(-4 , 5) is divided by the x axis. Also find
the coordinates of the point of division
Q4. If A is a point on the x- axis whose abscissa is 5 and B is the point (1,-3) then find the distance AB.
Q5. Find the values of y for which the distance between the points P(2 , -3) and Q(10 , y) is 10 units.
Q6. If ( 1 ,2 ) , ( 4 , y) , ( x , 6 ) and ( 3 , 5 ) are the vertices of a parallelogram taken in order , find x and y.
Q7. Find the coordinates of a point A where AB is the diameter of a circle whose center is ( 2 , -3 ) and
B ( 1 , 4 ).
Q8. Find the area of the quadrilateral whose vertices taken in order are ( -4 , -2 ) , ( -3 , -5 ) , ( 3 , -2 )
and ( 2 , 3 ).
AUTUMN BREAK HOME ASSIGNMENT 2016-17 CLASS X
Article writing’
1.Changing the role of youngster in modern scenario.
2.commercialisation of education.
3.Delight and usefulness of walking.
B. Write a story about 200-250 words having the theme ,UNITED WE STAND DIVIDED WE FALL.
Complete the following story .some lines are given to help you start.
Suraj was a very foolish man .He had no common sense and was often seen doing the silliest of things .He earned his livelihood by cutting wood………………………………………. .
Write a story with the title UNITED WE STAND DIVIDED WE FALL.
Tortured by and remorse the postmaster sits in the glow of charcoal sigri that night waiting for news of his daughter . As he sits he writes his diary.
Write any 5 Error correction and 5 omission.
प्र॰ 1 वाच्य के सभी भेदों के नाम व दस –दस उदाहरण लिखिए |
प्र॰ 2 रचना के आधार पर वाक्य के भेद लिखिए व सबके दस – दस उदाहरण लिखिए |
प्र॰ 3 रस के सभी भेदों के दो – दो उदाहरण लिखिए |
प्र॰ 4 पत्र लिखिए –
क॰ अपने क्षेत्र में बढ़ते अपराधों की रोकथाम हेतु थानाध्यक्ष को |
ख॰ नगर निगम के स्वास्थ्य अधिकारी को पेयजल की आपूर्ति हेतु |
प्र॰ 5 निबंध लिखिए –
क॰ देश में चल रहा स्वच्छता अभियान ख॰ वृक्षारोपण
प्र॰ क्षितिज - पद्यखंड –पाठ 1 से 5
गद्यखंड –पाठ 10 से 14 तक के प्रश्नोत्तर याद कीजिये व अभ्यास कीजिये |
प्र॰1 गोपियों के अनुसार राजा का धर्म क्या होना चाहिए ?
प्र॰2 लक्ष्मण ने वीर योद्धा की क्या-क्या विशेषताएँ बताई हैं ?
प्र॰3 चाँदनी रात की सुंदरता को कवि ने किन-किन रूपों में देखा है ?
प्र॰4 कवि आत्मकथा लिखने से क्यों बचना चाहता है ?
प्र॰5 कवि बादल से फुहार,रिमझिम,या बरसने के स्थान पर ‘गरजने’के लिए कहता है क्यों ?
प्र॰6 सेनानी न होते हुए भी चश्मेवाले को लोग कैप्टन क्यों कहते थे ?
प्र॰7 भगत की पुत्रवधू उन्हें अकेले क्यों नहीं छोड़ना चाहती थी ?
प्र॰8 लेखक को नवाब साहब के किन हाव-भावों से महसूस हुआ किवे उनसे बातचीत करने के लिए
भी उत्सुक नहीं हैं ?
प्र॰9 लेखक ने फादर बुल्के को ‘मानवीय करुणा की दिव्य चमक’क्यों कहा है?
प्र॰10 लेखिका के पिता ने रसोईघर को ‘भटियारखाना’क्यों कहा है?