JEE TS EAMCET Mock Test - 7 Free Online Test 2026

The value of de-Broglie wavelength of an electron moving with a speed of 6.6 x 10⁵ m s^-1 is approximately [ h = 6.6 x 10^-34   J − sec , mass of electron = 9 x 10^-31 Kg ]

If sky wave with a frequency of 50 MHz is incident on D-region at an angle of 30^o, then angle of refraction is

Which of the following harmful effects is not caused by SO₂?

When a 5 g piece of charcoal is added to a 0.75 M CH₃COOH, the concentration drops to 0.73 M. The extent of adsorption is

Chemical 'A' is used to the remove temporary hardness of water. 'A' reacts with sodium carbonate to give caustic soda. On bubbling CO₂ through the solution of A, a milkiness is observed. The chemical formula of A is:

The equilibrium:

is allowed  to set-up at 127°C in a closed vessel. The total pressure at equilibrium was 20 atm. The K_c for the reaction is

Directions: The following question has four choices out of which ONLY ONE is correct.
The heat of neutralisation of acetic acid by sodium hydroxide is −55.9 kJ/mol, and the heat of neutralisation of a strong acid by a strong base is −57.1 kJ/mol. What is the value of ΔH for the ionisation of CH₃COOH?

A solid AB has a NaCl structure. If the radius of cation A+ is 120 pm, then the maximum possible value of the radius of the anion B- will be

What is the time (in sec) required for depositing all the silver present in 125 mL of 1 M AgNO₃ solution by passing a current of 241.25 A?
(1F = 96500 coulombs)

If A and B are two events such that P(A) = p, P(B) = q, P (A ∩ B) = r , then the probability that A occurs but B does not occur, is

The polar form of the complex number (i²⁵ )³ is

∫logx dx =

Which equation has the solution, y = 4sin3x?

Consider f (x)   = x²/| x | , x ≠ 0, f(x)   = 0, x = 0

If α,β are the roots of equation x+1=λx(1-λx) and two values of λ can be determined from the equation (α/β)+(β/α)=π-2, then (λ₁²/λ₂²)+(λ₂²/λ₁²)+2=

The distance of the point (2, 1, -1) from the plane x - 2y + 4z = 9 is

If 1 , ω , ω²  , … ω^n-1 are the n, nth roots of unity and z₁ and z₂ are any two, complex numbers, then 

Let [ ] denote the greatest integer function and f(x) = [tan²x]. Then

When two dice are thrown, the probability of getting the sum 10 or 11 is

if f(m) = 3, f^'(m) = 2, g(m) = - 1 and g'(m) = 2 is

All diagonal elements of skew symmetric matrix are