KIITEE Mock Test - 2 - JEE MCQ

Depletion layer consists of

Which of the following statements is wrong?

For a transistor the parameter β = 99. The value of the parameter α is

Which of the following statement is true about p-type semiconductors?

Pick up the correct statement

Which one of the following is used in the industrial preparation of nitric acid by Ostwald's process ?

Lead sulphate is souble in

In the chemical reaction Ag₂O + H₂O + 2e^- → 2Ag + 2OH^-

The most stable hydride is

The value of c for which the angle between the vectors cxi-6j+3k, xi+2j+2cxk is obtuse is

Two common tangents to the circle x² + y² = 2a² and parabola y² = 8ax are

Find the sine of the angle between the vectors (a) 3i + j + 2k and vector (b) 2i - 2j + 4k is

A force of magnitude 5 units along the vector 2 î − 2j^{^} + k^{^}  displaces the point of application from (1,2,3) to (5,3,7), then the work done is

If sin(x-y) = cos(x+y) = 1/2, the value of x and y lying between 0⁰ and 180⁰, are given by

If |a+b|=|a-b|, then the angle between a and b is

If |a|=3, |b|=4, |c|=5 and a+b+c=0, the angle between a and b is

If a,b,c are three non-coplanar vectors, then [a+b,b+c,c+a]=-

The centre of a circle passing through the points (0, 0), (1, 0) and touching the circle x² + y² = 9 is

If the position vectors of C and B with respect to B and A are i+j, i-j respectively, the position vector of C with respect to A is

If A(-1,2,3),B(1,1,1) and C(2,-1,3) are points in a plane, the unit vector perpendicular to the plane AB is

Two tangents are drawn from the point (-2, -1) to the parabola y² = 4x. If α is the angle between these tangents, then tan α =

If the straight lines x = 1 + s, y = -3 - λs, z = 1 + λs and x = t/2, y = 1 + t, z = 2 - t, with parameters s and t respectively, are co-planar, then λ equals

i x (a x i)+j x (a x j)+k x (a x k)=

The line passing through (0, 1) and perpendicular to the line x - 2y + 11 = 0 is