KIITEE Mock Test - 6 - JEE MCQ

The potential in the depletion layer is due to

When a glass prism of refracting angle 60⁰ is immersed in a liquid its angle of minimum deviation is 30⁰ . The critical angle of glass with respect to the liquid medium is

A man runs towards a mirror with a speed of 15 m-s^-1. What is the speed of his image relative to the man is ?

When a beam of light is used to determine the position of an object, the maximum accuracy is achieved if the light is

The ether that undergoes electrophilic substitution reactions is

The standard E⁰_red. values of A,B,C are 0.68V,- 2.54 V,-0.50V respectively.The order of their reducing power is

The important oxide ore of iron is

The quantity of electricity required to liberate 112 cm³ of hydrogen at STP from acidified water is

If the standard electrode potential of Cu²⁺/Cu electrode is 0.34 V, what is the electrode potential at 0.01 M concentration of Cu²⁺? (T = 298K)

Galena is an ore of

In which of the following solutions are ions present?

On passing a current through KCl solution 19.5gm of potassium is deposited. If the same quantity of electricity is passed through a solution of aluminium chloride, the amount of Aluminium deposited is

The substance not likely to contain CaCO₃ is

White P when boiled with strong solution of caustic soda produces

Ether which is liquid at room temperature is

The equation of the plane through intersection of planes x + 2y + 3z = 4 and 2x + y - z = -5 and perpendicular to the plane 5x + 3y + 6z + 8 = 0 is

If a line makes angles α,β,γ with the +ve direction of x,y and z axis respectively, then cos²α + cos²β + cos²γ

If the roots of the equation x²+2mx+m² -2m+6=0 are equal, then the value of m is

If cosθ+cos7θ+cos3θ+cos5θ=0, then θ=

The points (5,2,4),(6,-1,2) and (8,-7,k) are collinear if k is equal to

If α,β are the roots of the equation x² - 2x + 4 = 0 then α⁵ + β⁵=

A tetrahedron has vertices at O (0, 0, 0), A(1, 2, 1), B(2, 1, 3) and C (-1, 1, 2). Then the angle between the faces OAB and ABC will be

The locus of the point of intersection of tangents to the circle x = a cos θ, y = a sin θ at the points, whose parametric angles differ by π/2 is