TS EAMCET Mock Test - 8 - JEE MCQ

An L.C. circuit contains 10 mH inductor and a 25 μ F capacitor. The resistance of the circuit is negligible. The energy stored in the circuit is completely magnetic at time (in milli seconds) being measured from the instant when the circuit is closed

An alkane C₇H₁₆ is produced by the reaction of Lithium di (3-pentyl) cuperate with ethyl bromide. The structural formula of product is

A reaction reaches a state of chemical equilibrium only when

When dilute H₂SO₄ is electrolysed at room temperature between Pt electrodes. The substance liberated at anode is

Which of the following will exhibits geometrical isomerism ?

The ratio of the molar amounts of H₂S needed to precipitate the metal ions from 20 mL each of 1M Cd(NO₃)₂ and 0.5 M CuSO₄ is

A compound A has a molecular formula C₂Cl₃OH. It reduces Fehling solution and on oxidation produces a monocarboxylic acid B. A can also be obtained by the action of Cl₂ on Ethanol. A is

The locus of x²+y²+z² =0 is

The position vector of the centre of the sphere  is

The mean of 5 observations is 4.4 and their variance is 8.24. If three observations are 1, 2 and 6, the other two observations are

In a sequence of number P, Q, R, S, T, U, V, ..., Z, the value of each subsequent number is 3 more than the product of previous and 3. If it is known that T is equal to 21, what is the value of P + Q?

The number of terms of the A.P. 3, 7, 11, 15,...to be taken so that the sum is 406 is

If the pair of lines ax²+ 2hxy + by² + 2gx + 2fy + c = 0 intersect on the y-axis then

( d/dx )(x² + cos x)⁴ =

Which of the following statement is false?

If ω ≠ 1 is a cube root of unity and satisfies and  then the value of  is

If A and B are two matrices such that AB = B and BA = A, then A²+ B² =

If the tangent to the curve 2y³ = ax² + x³ at the point (a, a) cuts off intercepts α and β on the coordinate axes, where α² + β² = 61, then the value of |a| is

Let A and B are two events and P(A′) = 0⋅3, P(B) = 0⋅4, P(A∩B′) = 0⋅5 then P(A∪B′) is:

The differential equation | dy/dx | + | y | + 3 = 0 admits

If n ∈ N, then 7²ⁿ + 2³ⁿ⁻³ ⋅ 3ⁿ⁻¹ is always divisible by

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

The equations of two lines are 3y - 4x = 5 and 4y + 6 = 3x. What is the relation between these lines?

If U = [2 −3 4], X = [0  2  3],  , then UV + XY

if f : R→R be such that f(1) = 4 and f^'(1) = 12 then 

The mean and variance of 7 observations are 8 and 16 respectively. If 5 observations are 2, 4, 10, 12, 14 then the remaining two observations are