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Class 10th Science Chapter 09 Heredity and Evolution

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  Class 10 Science Notes Hello friends this article's for the class 10 Science Notes for all the time of the day and night at regards to your goals for all examination of the class 10 Science Notes This notes and to-dos on the class 10 practice session for the exams. To prepare the best education and practice questions about the exams are provided for educational purposes only the best education Zone provides the best possible way of life   Class 10    Science Notes 09 Heredity and Evolution 1. The transmission of characters from parent to their off springs is known as heredity. • The study of heredity and variations is known as genetics. • Clones are those organisms which are the carbon copies of one another. • Variation in sexually reproducing organisms are caused due to the following factors like environment, crossing over and recombination of genes and mutation. • The first study of inheritance was done by Gregor Mendel on garden pea. • Paired condition
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CLASS 10th MATHEMATICS LONG QUESTIONS

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Dear student this guget article about the class 10th math practices PDF.

 Here are free download the pdf files for the class Xth MATHEMATICS REVISION QUESTIONS

Class Xth MATHEMATICS
Practice CBSE Class 10 Sample Papers and get familiar with the actual exam. Discover your weak areas and work on it. Boost your confidence and reduce the fear of exam.
            CLASS Xth 
MATHEMATICS LONG QUESTIONS....

 ➢ Each Questions Are 4  & 5  Marks 

 Q1.   Prove that, in a right triangle, the square on the hypotenus  is equal to the sum of the squares on the other two sides.
Q2.   An observed from the top of a 100m high light house from the sea-level, the angles of depression of two ships are 30°the 45°. If one ship is exactly behind the other on the same side of the light house, find the distance between the two ships. [𝑈𝑠𝑒 √3 = 1.732] 

Q3.   A motor boat whose speed is 18 km/hr in still water takes 1hr more to go 24 km upstream than to return downstream to the same spot. Find the speed of the stream. 
Q4.   In an equilateral  triangle ABC, D is a point on side BC such that BD = 1/3BC. Prove that 9(AD)2= 7(AB)2 

Q5.  If the points A(k + 1, 2k), B(3k, 2k + 3) and C(5k -1, 5k) are collinear then find the value of k. 

Q6.   The diagonal of a rectangular field is 16 metres more than the shorter side. If the longer side is 14 metres more than the shorter side, then find the lengths of the sides of the field. 

Q7.  Find the 60th term of the AP 8, 10, 12, ..., if it has a total of 60 terms and hence find the sum of its last 10 terms. 

   Q8. Find the values of k so that the area of the triangle with vertices (1, – 1), (– 4, 2k) and (– k, – 5) is 24 sq. units. 

Q9.  The mean of the following distribution is 18. Find the frequency f of the class 19 – 21.  
Class      11-13   13-15   15-17   17-19    19-21     21-23     23-25  
Frequency 3         6           9            13          f              5              4 

Q10.  28. Prove that : 
sin8A – cos8A = (1 – 2 cos2A) (1 – 2 sin2A cos2A) 

Q11.  The sum of the areas of two squares is 640 m2. If the difference of their perimeters is 64 m,find the sides of the square. 

Q12.  Find the values of frequencies x and y in the following frequency distribution table, if N = 100 and median is 32. 
Marks : .        0 – 10     10 – 20    20 – 30    30 – 40   40 – 50  50 – 60  
No. of Stu.... : 10               x              25             30            y            10  
Q13Draw a triangle ABC with BC = 6 cm, AB = 5 cm and <ABC = 60°. Then construct a triangle whose sides are 3/4 of the corresponding sides of the  triangleABC. 

Q14. Solve by elimination method and the substitution method : I} x + y = 5 and 2x – 3y = 4.  {ii} x – 3y – 3 = 0 and 3x – 9y – 2 = 0 

Q15 1. Find the area of a sector of a circle with radius 6 cm if angle of the sector is 60°. 

2. Find the area of a quadrant of a circle whose circumference is 22 cm

......
Any student's appearing for Class 10 Board Exams must have finished the entire syllabus and started their revision. At this point, practicing CBSE Sample Papers for Class 10 is of utmost importance. This will help students get an idea about the nature of the board exam and the type of questions asked in it. They will also understand their level of preparation. Based on that, they can decide their preparation strategy to improve.

 All examination questions are asked from ncert books and example.....

 Click here and free download the pdf files....
https://drive.google.com/file/d/1FopZunQNJd7ZGsJ-FAja8EKojI_BP5T-/view?usp=drivesdk
BY :– V.kumar

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