List of top Questions asked in AP ECET Mining Engg

Which of the following is not a property of covalent compounds?

In the elements with atomic number $Z=1$ to $Z=20$, how many of them have no unpaired electrons in their ground state?

"No two electrons in an atom can have the same set of four quantum numbers". This is known as

The quantum number which describes the shape of an atomic orbital is indicated by the symbol

At critical angle, the angle of refraction is

Two photons of energy $2.5 \text{ eV}$ and $3.5 \text{ eV}$ fall on a metal surface of work function $1.5 \text{ eV}$. The ratio of the maximum velocities of the photoelectrons emitted from the metal surface is

A simple pendulum of length $l_1$ has frequency $\frac{1}{4} \text{ Hz}$ and another simple pendulum of length $l_2$ has frequency $\frac{1}{3} \text{ Hz}$. Then time period of pendulum of length $(l_1 - l_2)$ is

A body executing S.H.M. has a maximum velocity of $1 \text{ ms}^{-1}$ and a maximum acceleration of $4 \text{ ms}^{-2}$. Its amplitude in metres is:

Two identical wires have a fundamental frequency of $100 \text{ Hz}$ when kept under the same tension. If the tension of one of the wires is increased by $21\%$, the number of beats produced is

A force applied by an engine on train of mass $2.05 \times 10^6 \text{ Kg}$ changes its velocity from $5 \text{ m/s}$ to $25 \text{ m/s}$ in $5 \text{ minutes}$. The power of the engine is

The kinetic energy at the highest point of the trajectory of a projectile is $200 \text{ J}$. If the mass of the projectile is $1 \text{ Kg}$ and the maximum height reached by it is $20 \text{ m}$, then velocity of the projectile from the ground is

In a hydroelectric power station, the height of the dam is $10\text{ m}$. How many kilograms of water must fall per second on the blades of a turbine in order to generate $1\text{ MW}$ of electrical power? $[g = 10\text{ m/s}^2]$

Two blocks of masses $4\text{ kg}$ and $2\text{ kg}$ are connected by a heavy string and placed on rough horizontal plane. The $2\text{ kg}$ block is pulled with a constant force $F$. The coefficient of friction between the blocks and the ground is $0.5$. The value of $F$ so that tension in the string is constant throughout during the motion of the blocks is

When a bicycle is in motion and pedalled, the force of friction exerted by ground on the two wheels is such that it acts

A projectile is thrown into air with velocity u at an angle $\theta$ to the horizontal. The time at which its direction of motion is perpendicular to its initial direction is

Two stones are projected with the same speed but making different angles with the horizontal. Their horizontal ranges are equal. The angle of projection of one is $\pi/8$ and the maximum height reached by it is $102$ metres. Then the maximum height reached by the other in metres is

A ball is projected vertically up with a velocity of $40 \text{ ms}^{-1}$ from ground. At the same time another ball is dropped from a height of $100 \text{ m}$. The magnitudes of their velocities are equal after

The position $x$ of a particle with respect to time '$t$' along x- axis is given by $x = 9t^2 - t^3$ where $x$ is in metres and $t$ in seconds. The position of this particle when it achieves maximum speed along the x direction is

Of the vectors given below, the parallel vectors are $\vec{A} = 6\hat{i} + 8\hat{j}$, $\vec{B} = 210\hat{i} + 280\hat{k}$, $\vec{C} = 5.1\hat{i} + 6.8\hat{j}$, $\vec{D} = 3.6\hat{i} + 8\hat{j} + 48\hat{k}$

If $|\vec{A} \times \vec{B}| = \sqrt{3} \vec{A} \cdot \vec{B}$ then the value of $|\vec{A} + \vec{B}|$ is

$MLT^{-1}$ is the dimensional formula for

If the unit of mass is $1\text{ kg}$, the unit of length is $1\text{ m}$ and the unit of time is $1\text{ minute}$, the unit of pressure in $\text{Nm}^{-2}$ is

Particular integral of $f(D)y = \cos ax$ is

Complementary function of the differential equation $(D^3 - 8)y = x$ is

When $a=b$ then $\int_{a}^{b} f(x)dx =$