The sides of a right angled triangle are in arithmetic progression. If the triangle has area 24, then what is the length of its smallest side ?

Rahul Kumar Maths 29 Jul, 2017 1165 views

If a chord, which is not a tangent, of the parabola y2 = 16x has the equation 2x + y = p, and midpoint (h, k), then what is(are) possible value(s) of p, h and k ?

Anshul Kumar Singh Maths 29 Jul, 2017 1139 views

A crystalline solid of a pure substance has a face-centred cubic structure with a cell edge of 400 pm. If the density of the substance in the crystal is 8 g cm-3, then the number of atoms present in 256 g of the crystal is N × 1024. The value of N?

Rahul Kumar Chemistry 28 Jul, 2017 1123 views

Why colour of the X2 molecules of group 17 elements changes gradually from yellow to violet down the group?

Preeti Rai Chemistry 28 Jul, 2017 118 views

How many unpaired electrons are present in Co3+ ion?

Ritesh Rai Chemistry 27 Jul, 2017 2414 views

How many groups are occupied by p-block elements in long form of periodic table?

Ritesh Rai Chemistry 26 Jul, 2017 312 views

What is the power of accommodation of the eye?

Rahul Kumar Physics 25 Jul, 2017 68 views

A myopic person uses specs of power –0.5 D. What is the distance (in meter) of the far point of his eye?

Ritesh Rai Physics 25 Jul, 2017 1868 views

Two balls are dropped to the ground from different heights. One ball is dropped 2s after the other but they both strike the ground at the same time. If the first ball takes 5s to reach the ground, then the difference in initial heights is (g = 10 ms–2) 40

Preeti Rai Physics 23 Jul, 2017 4550 views

16. A train covers a distance of 90km at a uniform speed. Had the speed been 15km/hr more, it would have taken half an hour / hr for the journey. What will be the original Speed of the train.

Anshul Kumar Singh Physics 23 Jul, 2017 97 views

15. In a two digit number, the sum of the digits is 13. If the number is subtracted from the one obtained by inter changing the result is 45. Find the number.

Anshul Kumar Singh Maths 22 Jul, 2017 113 views

What will be current through electric iron if an electric iron rated as 800W, 200V operating at the voltage of 100V?

Anshul Kumar Singh Physics 21 Jul, 2017 118 views

What will be energy of an alfa particle when it is accelerated by a potential difference of 3V?

Anshul Kumar Singh Physics 16 Jul, 2017 70 views

Number of electrons to be put on a spherical conductor of radius 0.1 m to produce an electric field of 0.036N/C just above its surface is

Anshul Kumar Singh Physics 15 Jul, 2017 434 views

An Athletic completes one round of a circular track of radius 2.5 m in 12 sec. What will be the magnitude of displacement (in meter) at the end of 54 sec.

Anshul Kumar Singh Physics 15 Jul, 2017 235 views

What will be the relative rates of diffusion between CH4 and SO2? (Mol. mass of SO2 = 64 & CH4 = 16)

Anshul Kumar Singh Chemistry 12 Jul, 2017 307 views

Find the volume of a pyramid whose base is a square with side lengths of 10 m and height 9 m.

Anshul Kumar Singh Maths 10 Jul, 2017 67 views

How many edges faces and vertices are on a cone?

Ashish Maurya Maths 09 Jul, 2017 238 views

What type of pyramid has four faces?

Ashish Maurya Maths 09 Jul, 2017 97 views

What is the edge of a cube?

Ashish Maurya Maths 09 Jul, 2017 69 views

What is a square based pyramid?

Ashish Maurya Maths 09 Jul, 2017 81 views

How many vertices are in a pyramid?

Ashish Maurya Maths 09 Jul, 2017 72 views

What is the number of vertices in a pyramid with 10 faces?

Ashish Maurya Maths 09 Jul, 2017 179 views

What is the rate of acceleration of gravity?

Preeti Rai Physics 07 Jul, 2017 73 views

Mr. Sharma and Mr. Arora are family friends and they decided to go for a trip with family . For the trio they reserved their rail tickets . Mr. Arora has not taken a half ticket for his child who is 6 years old where as Mr, Sharma has taken half tickets for his two children who are 6 year and 8.5 year.A railway half ticket costs half of the full fare but the reservation charges are the same as on a FULL TICKET. MR AND MRS ARORA PAID 1700,WHILE MR AND MRS SHARMA PAID 2700. Find the full share of one ticket and reservation charges per ticket.

Ashish Maurya Maths 07 Jul, 2017 1922 views

Can the number n ^6,n being a natural number ,end with the digit 5? Give reasons.

Ashish Maurya Maths 07 Jul, 2017 323 views

A man has certain note of denomination 20 and 5 which amount to 380 . If the number of notes of each kind are interchanged,they amount to 60 less than before . Find the number of notes of each denomination.

Ashish Maurya Maths 07 Jul, 2017 489 views

Explain with a suitable diagram

Preeti Rai Biology 05 Jul, 2017 77 views

Explain why sodium is more reactive than lithium.

Preeti Rai Chemistry 05 Jul, 2017 78 views

What is dispersion?

Abhay Rai Physics 05 Jul, 2017 68 views

What kind of lens is used in spectacles of a person suffering from myopia?

Abhay Rai Physics 05 Jul, 2017 113 views

What is the matrix and what is the use of it? What are the types and how it works?

Niti Gupta Maths 05 Jul, 2017 70 views

What is hysteresis loss? Where does the loss actually occur?

Mitali Rajpoot Physics 05 Jul, 2017 74 views

What is Atom? What is Mass? What is difference between both?

Arun Sharma Chemistry 05 Jul, 2017 68 views

What is th formula of sodium sesquicarbonate, which is used for wool washing

Ritesh Rai Chemistry 05 Jul, 2017 223 views

What is Distance and displacement calculation? What is the difference between both of you.

Arpita Singh Maths 04 Jul, 2017 78 views

Niti Gupta English 03 Jul, 2017 67 views

What is the meaning of microvascular niche? What does niche refer to in biology?

Kirti Gulati Biology 03 Jul, 2017 74 views

What is ascent of sap?

Preeti Rai Biology 03 Jul, 2017 75 views

Name the largest blood vessel in the human body

Preeti Rai Biology 03 Jul, 2017 82 views

What compound is Plaster of Paris? How is it prepared? What happens when it is mixed with water and allowed to stand? Mention two applications of this property of Plaster of Paris

Anshul Kumar Singh Chemistry 03 Jul, 2017 291 views

Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.

Anshul Kumar Singh Chemistry 03 Jul, 2017 923 views

Define exothermic and endothermic reactions? Give examples.

Anshul Kumar Singh Chemistry 03 Jul, 2017 85 views

Why should a magnesium ribbon be cleaned before burning in air?

Anshul Kumar Singh Chemistry 03 Jul, 2017 343 views

Please explain me Kinetic Energy and what will happened when we increase the speed then what will be the kinetic energy of the moving body

Anshul Kumar Singh Physics 02 Jul, 2017 82 views