CBSE Class X: Important Bio Diagrams

Drawing and labelling diagrams is a skill. But even if you're not destined to be the next Picasso, you must at least get the basics right.

With the Class X board exams just around the corner, CBSE experts present a special revision aid hand drawn diagrams for your reference to help you improve your drawing skills in Biology (part of the CBSE science theory exam).

So, closely observe these illustrations and get an idea of how to crack Class X Biology diagrams!

Just download these documents or take a printout, and practice drawing and labelling them. 

• Top diagrams in control and coordination

• Top diagrams in life processes

• Top diagrams in 'How do organisms reproduce'

Courtesy: Rediff

Class X : HOTS Question Answers: Math Unit - 6 (Trigonometry)

Trigonometry

1.             If xcosθ – ysinθ = a, xsinθ + ycos θ = b, prove that x2+y2=a2+b2.

2.            Prove that sec2θ+cosec2θ can never be less than 2.

8.            If A, B are acute angles and sinA= cosB, then find the value of A+B.

Class X : HOTS Question Answers: Math Unit - 13 (STATISTICS AND PROBABILITY)

STATISTICS AND PROBABILITY

Compute the median from the following  1.      The sum of deviations of a set of values x1, x2, x3,…………x, measured from 50 is -10 and the sum of

The mean of ‘n’ observation is, if the first term is increased by 1, second by 2 and so on.  What will be the

The mode of a distribution is 55 & the modal class is 45-60 and the frequency preceding the modal

The mean of 30 numbers is 18, what will be the new mean, if each observation is increased  

In the graphical representation of a frequency distribution if the distance between mode and mean is k times the distance between median and mean then find the value of  k

Class X : HOTS Question Answers: Math Unit - 8 SIMILAR TRIANGLES)

SIMILAR TRIANGLES

ABC is a right-angled triangle, right-angled at A. A circle is inscribed in it. The lengths of the two sides containing the right angle are 6cm and 8 cm. Find the radius of the in circle

1.      ABC is a triangle. PQ is the line segment intersecting AB in P and AC in Q such that PQ parallel to BC and divides triangle ABC into two parts equal in area. Find BP: AB.

2.      In a right triangle ABC, right angled at C, P and Q are points of the sides CA and CB respectively, which divide these sides in the ratio 2: 1.

3.      P and Q are the mid points on the sides CA and CB respectively of triangle ABC right angled at C. Prove that 4(AQ2 +BP2) = 5AB

Class X : HOTS Question Answers: Math Unit - 4 (Quadratic Equations)

QUADRATIC EQUATIONS

Class X : HOTS Question Answers: Math Unit - 12 (PROBLEMS BASED ON CONVERSION OF SOLIDS)

PROBLEMS BASED ON CONVERSION OF SOLIDS

 A solid is in the form of a right circular cone mounted on a hemisphere. The radius of the hemisphere is 3.5 cm and the height of the cone is 4 cm.  The solid is placed in a cylindrical tub, full of water, in such a way that the whole solid is submerged in water. If the radius of the cylindrical tub is 5 cm and its height is 10.5 cm, find the volume of water left in the cylindrical tub

A bucket of height 8 cm and made up of copper sheet is in the form of frustum of right circular cone with radii of its lower and upper ends as 3 cm

A sphere and a cube have equal surface areas. Show that the ratio of the volume of the sphere to that of the

A right triangle whose sides are 15 cm and 20 cm is made to revolve about its hypotenuse. Find the

Water in a canal 30 dm wide and 12 dm deep is flowing with a velocity of 10 km/h. How much area will

Class X : HOTS Question Answers: Math Unit - 2 (Polynomials)

POLYNOMIALS

It is not once nor twice but times without number that the same ideas make their appearance in the world

1. If two zeros of the polynomial f(x) = x4 - 6x3 - 26x2 + 138x – 35 are 2 3.Find the other zeros. (Ans:7, -5)
2. Find the Quadratic polynomial whose sum and product of zeros are 2 + 1, .
3. If , are the zeros of the polynomial 2x2 – 4x + 5 find the value of a) 2 +  2 b) ( - )2.
4. If , are the zeros of the polynomial x2 + 8x + 6 frame a Quadratic polynomial whose zeros are a) and b) 1 + , 1 + .
5. On dividing the polynomial 4x4 - 5x3 - 39x2 - 46x – 2 by the polynomial g(x) the quotient is x2 - 3x – 5 and the remainder is -5x + 8.Find the polynomial g (x). (Ans:4 x2+7x+2)
6. If the squared difference of the zeros of the quadratic polynomial x2 + px + 45 is equal to 144 , find the value of p.
7. If , are the zeros of a Quadratic polynomial such that  +  = 24,  -  = 8. Find a Quadratic polynomial having  and  as its zeros.
8. If  & ß are the zeroes of the polynomial 2x2 ─ 4x + 5, then find the value of
9.  2 + ß2 b. 1/  + 1/ ß c. ( ─ ß)2 d. 1/2 + 1/ß2 e. 3 + ß3
10. Obtain all the zeros of the polynomial p(x) = 3x4 ─ 15x3 + 17x2 +5x ─6 if two zeroes are ─1/√3 and 1/√3.

Class X : HOTS Question Answers: Math Unit - 3 (Pair of linear equations)

Pair of linear equations

1.  At a certain time in a deer park, the number of heads and the number of legs of deer and human visitors were counted and it was found there were 39 heads & 132 legs.  Find the number of deer and human visitors in the park.

2. Find the value of p and q for which the system of equations represent coincident lines

3. 2x +3y = 7, (p+q+1)x +(p+2q+2)y = 4(p+q)+1
4. Students are made to stand in rows. If one student is extra in a row there would be 2 rows less. If one student is less in a row there would be 3 rows more. Find the number of students in the class.

5.  The larger of two supplementary angles exceeds the smaller by 180, find them.

6. A train covered a certain distance at a uniform speed.  If the train would have been 6km/hr faster, it would have taken 4hours less than the scheduled time.  And if the train were slower by 6km/hr, it would have taken 6 hours more than the scheduled time.  Find the distance of the journey.          

7.  A chemist has one solution which is 50% acid and a second which is 25% acid.  How much of each should be mixed to make 10 liters of 40% acid solution.  

Class X : HOTS Question Answers: Math Unit - 1 (Number system)

NUMBER SYSTEMS

Numbers are intellectual witnesses that belong only to mankind.

1. If the H C F of 657 and 963 is expressible in the form of 657x + 963x - 15 find x.

2. Express the GCD of 48 and 18 as a linear combination. (Ans: Not unique)

3. Prove that one of every three consecutive integers is divisible by 3.

4. Find the largest possible positive integer that will divide 398, 436, and 542 leaving remainder 7, 11, 15 respectively. (Ans: 17)

5. Find the least number that is divisible by all numbers between 1 and 10 (both inclusive).

6. Show that 571 is a prime number.

7. If d is the HCF of 30, 72, find the value of x & y satisfying d = 30x + 72y.

8. Show that the product of 3 consecutive positive integers is divisible by 6.

9. Show that for odd positive integer to be a perfect square, it should be of the form

10. Find the greatest number of 6 digits exactly divisible by 24, 15 and 36. (Ans:999720)

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Subjects on which Info GENERAL:  Result Notification Exam / Class:  AIPMT Read more about (AIPMT 2010) Method to obtain Information using SMS Download Class X : HOTS Question Answers: Math Unit - 11 (MENSURATION) Class X : HOTS Question Answers: Math Unit - 11 (MENSURATION) MENSURATION Find the area enclosed between two concentric circles of radii 3.5cm, 7cm. A third    concentric circle is drawn outside the 7cm circle so that the area enclosed between it and the Two circles touch externally. The sum of their areas is 58 cm2 and the distance between their centres is 10 cm. Find the radii of the two circle In the adjoining figure  right angled triangle right angled at A. Semi circles are drawn on the sides of the triangle . Prove that area of the Shaded region is equal to area of The sum of the diameters of two circles is 2.8 m and their difference of circumferences is 0.88m.  Find the radii of the two cir Find the circumference of a circle whose area is 16 times the area of the circle with diameter 7cm  GENERAL:  Downloads HOTS Subjects:  Maths Exam / Class:  CBSE Class-10 Read more about Download Class X : HOTS Question Answers: Math Unit - 11 (MENSURATION) (AIPMT 2010) How To Get AIPMT Duplicate Admit Card How To Get AIPMT Duplicate Admit Card (i) IF DETAILS OF THE CANDIDATE IS AVAILABLE ON AIPMT WEBSITE:- GENERAL:  HELP INFO Exam / Class:  AIPMT Read more about (AIPMT 2010) How To Get AIPMT Duplicate Admit Card (AIPMT 2010) Revised Schedule For All India Pre-medical/Pre-dental Examination, 2010 REVISED SCHEDULE FOR ALL INDIA PRE-MEDICAL/PRE-DENTAL EXAMINATION, 2010 CBSE conducts the All India Pre-Medical/Pre-Dental Preliminary Entrance Examination every year on 1st Sunday of April. In the year 2010, the first Sunday falls on 4th April, 2010 which is EASTER S GENERAL:  Notification Exam Exam / Class:  AIPMT Read more about (AIPMT 2010) Revised Schedule For All India Pre-medical/Pre-dental Examination, 2010 Pages « first ‹ previous … 227 228 229 230 231 232 233 234 235 … next › last » NEW!  CBSE Board E-BOOKS PDF  NEW! NCERT BOOKS CLASS-6 to Class-12 PDF Download NEW! Download OLD NCERT Books PDF NEW! Tamil Nadu Board Textbooks PDF Download Whats Hot! (Download) CBSE Board Exam Model Papers... (Download) CBSE Text Books - FREE PDF Download Free e-Books for CBSE Students CBSE PSA (Problem Solving Assessment... NCERT: National Council of Educational... CBSE Downloads: Projects, Guess Papers... CBSE Board Toppers Class-10 Model... NEW! DOWNLOADS CBSE Class-X Sample Papers CBSE Class-XII Sample Papers FREE E-BOOKS  Home | CBSE-X | CBSE-XII | Papers | E-Books | Disclaimer: This website is not associated with CBSE, For official website of CBSE visit - www.cbse.gov.in Downloads | Contact Us | Privacy Policy © 2025 - CBSEPORTAL.COM - India's First Online Community Website For CBSE Students. CBSE X, CBSE XII, AIEEE, AIPMT - Papers, Mock Exams, Books, Results and More...