List of top Questions asked in MET- 2017

Purification of NaCl by passage of hydrogen chloride through brine is based on

Which of the following is most acidic?}

The mass of oxygen that would be required to produce enough CO which completely reduces 1.6 kg \( Fe_2O_3 \) (at. mass \( Fe = 56 \)), is

For \( f \)-orbital the values of \( m \) are

A stationary police car sounds a siren with a frequency of 990 Hz. If the speed of sound is 330 m/s, an observer, driving towards the car with a speed of 33 m/s, will hear a frequency of

When the inputs of a two input logic gate are 0 and 0, the output is 1. When the inputs are 1 and 0 the output is 0. The logic gate is of the type

First diffraction minima due to a single slit of width \(10^{-4}\) cm is at \(\theta = 30^\circ\). Then wavelength of the light used is

The photoelectric cut-off voltage in an experiment was found to be 1.5 V. The work function for the material used in the experiment was 4.2 eV. The maximum kinetic energy of the photoelectrons emitted was

A sinusoidal voltage of peak value 300 V and an angular frequency \(\omega = 400\) rad/s is applied to a series \(L\)-\(C\)-\(R\) circuit in which \(R = 3\ \Omega\), \(L = 20\) mH and \(C = 625\ \mu\)F. The peak current in the circuit is

In the adjoining circuit, the resistances are given in ohm, and \(X\) and \(Y\) are unknown resistances. The current through the 10 \(\Omega\) resistance is 3A while that through the resistance \(X\) is 1A. No current passes through the galvanometer. The values of the unknown resistances \(X\) and \(Y\) are respectively}

A voltmeter of resistance 998 \(\Omega\) is connected across a cell of emf 2 V and internal resistance 2\(\Omega\). The potential difference across the voltmeter is

Two capacitors, one 4 pF and the other 6 pF, connected in parallel, are charged by a 100 V battery. The energy stored in the capacitors is

The linear momentum is increased by 50%, the kinetic energy will increase by

Two equal point charges, \(Q = +\sqrt{2}\ \mu\)C are placed at each of the two opposite corners of a square and equal point charges \(q\) at each of the other two corners. The value of \(q\), so that the resultant force on \(Q\) is zero is

Two equal charges \(q\) are kept fixed at \(-a\) and \(+a\) along the \(x\)-axis. A particle of mass \(m\) and charge \(\dfrac{q}{2}\) is brought to the origin and given a small displacement along the \(x\)-axis, then

When an equilateral prism of refractive index \(\sqrt{3}\) produces minimum deviation the angle of incidence at the first face must be

For a colour of light the wavelength for air is 6000 \AA\ and in water the wavelength is 4500 \AA. Then the speed of light in water will be

A geo-stationary satellite is orbiting the earth at height of 6\(R\) above the surface of the earth, \(R\) being the radius of the earth. The time period of another satellite at a height of 2.5 \(R\) from the surface of the earth is

What is the Boolean equation for a NAND gate with inputs \(A\) and \(B\)?}

A \(p\)-\(n\) junction is designed to withstand current up to a maximum in 10 mA. A resistor \(R = 200\ \Omega\) is connected in series with it. When forward biased the diode has a potential drop of 0.5 V. The maximum voltage of the battery required to forward bias the diode is

The ratio of the wavelength of first line of Balmer series to the first line of Lyman series is

An electron at rest is accelerated through a potential difference of 200 V. If the electron acquires a velocity of \(8.4 \times 10^8\) cm/s, its \(e/m\) ratio is

The angle of minimum deviation for a prism of angle \(A\) is \(180 - 2A\). The refractive index is

Two coherent sources of intensity ratio 9:4 produce interference. What is the ratio between maxima and minima in the interference pattern produced?

Three 2 \(\Omega\) resistors are connected to form a triangle. The resistance between any two corners is