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

The total number of 8 digited 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 thro’ 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

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

A cubic polynomial f(x) = ax³ + bx² + cx + d has a graph which touches the x-axis at 2, has another x-intercept at –1 and has y-intercept at –2 as shown. The value of, a + b + c + d equals

If a function has a tangent at a point x=  , then, it means, it is the critical point of that function and the derivative of the function is zero at that point.
Perform the calculations carefully, to avoid silly mistakes.
One should know how to read a graph to solve such questions.

Consider f(x) = |1–x| 1 £ x £ 2 and g(x )= f(x) + b , 1 £ x £ 2 then which of the following is correct?

The value of c in Lagrange’s theorem for the function f(x) = log sin x in the interval is -