22 of these pairs, are called as autosomes. They look the same in both males and females. The remaining one pair is the sex chromosomes. Sex chromosomes are different in male and female. Females have two copies of the X chromosome .....

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A referendum (plural referendums) is a direct vote in which an entire electorate is invited to vote on a particular proposal. Some of the significances of the referendum .....

These platelets go to where the bleeding is and fill up the hole. Thus, it prevents from excessive bleeding. This process is called blood clotting. Clotting helps stop bleeding after a cut or injury. If clotting doesn't happen, a wound .....

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Here, We have given,  OC = CE & O is center of the circle Now,  1. ∡OCE =  ∡E = x (say)                                 [ OC = .....

Construction : M and S are joined. Proof: <MXS + < SMX = <MSR [Sum of opposite angles = Oppoiste exterior angle in a triangle] or, <MXS = <MSR - <SMX .........(i) In the circle, <MSR = 1/2 arc MR and, < SMX = 1/2 arc .....

Do you mean area of isoscles triangle? We can use the formula  Area(A) = 1/2 * r2 * sinϴ Where, ϴ is the angle between equal sides and ϴ the angle between the equal sides. We also can use,  A = 1/2 * b * h to .....

Solution: Here, height (h) = 12 m. You may know that, Liquid pressure = hdg                           = 12 x 1000 x 10                .....

You may know that power is the time rate of  doing any work. Here, power = 100 Watt Time taken = 4 sec According to definition,  power = workdone/time taken or, 100 = work/4 or, wordone = 400 .....

A pie chart displays data, information, and statistics in an easy-to-read 'pie-slice' format. The varying slice sizes telling you how much of one data element exists. The bigger the slice, the more of that particular data was .....

The correct matchings .....

Le the two numbers be 3x and 4x respectively. The LCM of 3x and 4x is:  12x. Now, given that LCM = 120, So, 12x = 120 Therefore, x = 10. Now, 3x = 3* 10 = 30, And, 4x = 4*10 = 40 Therefore, the numbers are 30 and .....

The magnetic force or attraction is is greater where the field lines are crowded. Since all the magnetic field lines generates from the poles, the crowd of field lines is maximum near pole.

As you can see in the following image: So, .....

The S.I unit of frequency is Hertz .....

When a string of a guitar is plucked, what happems? We observee that the string starts to vibrate and  sound is heard. Here, sound is possessed due to the vibrations produced in the stretched string of the guitar. Thus, sound is caused by a .....

You might have learnt that, Sound is a form of energy. It consists of vibrations that need a medium to propagate.    Sound propagates by causing the particles in the medium to vibrate. A vibrating source transfers the vibrations to the .....

What do you see in image given above? This is earth, our home.   ​​​​​​You may know that Earth is our home planet.

Scientists believe Earth and its moon are formed around the same time as the rest of the solar .....

Look at the following structure of heart and its various parts. You can see that heart consists of four main chambers. The upper two chambers are called as atria and the lower two chambers are called as .....

The image is real, inverted, smaller than the object and is formed between principal focus (F) and center of curvature (C) of the mirror.  In the figure, A'B' is the image of an object .....

Demagnetization is the process of losing magnetic property of a magnet. The main cause of demagnetization is the disturbance in the chain of molecular magnets in a magnet. When the molecular magnets in a magnet are rearranged in the form of closed .....

Two methods to conserve magnetic power are, 1. Keep the magnets in a dry place. The most likely to suffer moisture degradation is the neodymium magnet. 2.Put away each type of magnet in its own space or drawer to prevent .....

Air is the most common medium through which sound travels. When a vibrating object moves forward, it pushes and compresses the air in front of it creating a region of high pressure. This region is called a .....

Lift this .....

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The United Nations is an international organization founded in 1945.  It was established on 24th Oc. 1945 AD. It's headquarter is located in Manhattan, New York. The main objective of the world's umbrella organization is to promote .....

- Poor lighting condition - Not enough sleep - Watching TV for too long - .....

Since they invest in the ratio of 2 : 3 : 5. Let each invest  2x, 3x and 5x respectively. Total Sum = Rs. 15,000 So,  2x + 3x + 5x =  15000 or,10x = 15000 Therefore, x = 1500. Now, Ram invests 2x = 2 * 1500 = Rs. 3000 Hari .....

In triangle OBC, BC = BO + OC [Using triangular law of vector addition]        = - OB + OC         = -(a + 3b) + (a + b)          = -2b Therefore, BC = -2b Again in .....

Some of these conditions are: 1. Macular degeneration: You may have learned about retina of our eyes. Macula is the central part of the retina and is responsible for reading and detecting the objects. Macular Degeneration occurs when the macula .....

Some parts of the body have a much greater number of these sensory nerve endings in the skin than other parts. Those parts having more sensory nerve endings in the skin are more sensitive to touch than the others. Hence, some parts of our .....

You may know that our eyes contain retina. Retina contains two types of cells that respond to light, called as photoreceptors. They are rods and cones. The cones detect colour. IN this way we see .....

A sample report on the holy place 'Pathivara Temple' is provided below. Based on this report, write a report on the other holy place 'Halasi Mahadev' located in Khotang district at the eastern hilly region of .....

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Let the two numbers be 5x and 7x respectively. When three is added to them , The number becomes = 5x + 3,  And, 7x + 3. According to question,  after the addition, the numbers are in the ratio of 3 : 4. So, (5x + 3 )/ ( 7x + 3 ) = .....

Triangle ADC and triangle BDC are standing on same base DC and between parallel lines AB and DC. To Prove: Area of triangle ADC = Area of Triangle DBC Construction: MC parallel to AD is .....

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Here, f(x) = 2x + 3 f(a) = 2a + 3 f(a + 2) = 2(a+2) + 3 = 2a + 7 f(a + 2) = 2a + .....