Melting point is very high for

The number of ways can 7 boys be seated at a round table so that 2 particular boys are separated is :

When n distinct objects are arranged in n places, then the total number of ways possible are n!. But, when n objects are to arranged in n places on a circular table, there are (n−1)!ways.

Least ionic compound among the following is

Stability of ionic compound is influenced by

The electronegativities of F,Cl,Br and I are 4.0,3.0,2.8,2.5 respectively. The hydrogen halide with a high percentage of ionic character is

The eccentricity of the hyperbola with asymptotes 3x + 4y = 2 and 4x – 3y = 2 is

The number of ways that '6' rings can be worn on the 4 - fingers of one hand is

 It is important to note that we have used a basic fundamental principle of counting to find the total ways. Also, it is important to notice that each ring has 4 ways as it has not been given that each finger must have at least one ring. So, there can be 6 rings in a finger alone and remaining all the fingers empty.

The total number of 8 digit numbers which have all different digits is

Which part shows initial velocity of the particle?

The equation of the ellipse with axes along the x – axis and the y – axis, which passes through the points P (4, 3) and Q (6, 2) is

Which area shows the displacement covered by the particle after time t.

Polarization power of a cation increases when

Here are the graphs of v→ t of moving body. which of them is not suitable

The number of values of c such that st. line y = 4x + c touches the curve is

Tangents are drawn to the ellipse at the ends of the latus rectum. The are of the quadrilateral so formed is

A tangent to the ellipse x² + 4y² = 4 meets the ellipse x² + 2y² = 6 at P and Q. The angle between the tangents at P and Q of the ellipse x² + 2y² = 6 is