List of practice Questions

The decreasing order of priority for the following functional groups in the IUPAC Nomenclature is: –SO\textsubscript{3}H, –CN, –COOH, –OH, –CHO
Arrange the following free radicals in the correct order of their stability:
At 300 K, the following graph is obtained for one mole of an ideal gas. If its pressure is 10 atm, then its volume (in L) will be
What are x, y and z respectively in the following reaction?
\[ x \text{Fe}^{2+} (aq) + y \text{H}^{+} (aq) + z \text{Cr}_2\text{O}_7^{2-} (aq) \rightarrow \frac{y}{2} \text{H}_2\text{O} (l) + x \text{Fe}^{3+} (aq) + 2z \text{Cr}^{3+} (aq) \]
The following methods can not be used to remove permanent hardness of water:
Identify the region of spectral lines of electromagnetic spectrum, when electron transition takes place from higher energy levels to n = 3, 4, 5 in atomic spectrum of hydrogen.
Maximum number of electrons theoretically possible for an orbit with principal quantum number n = 6 in an atom is.
Which of the following statements are correct?
The correct order of electron gain enthalpy of N, O, Cl, Al is.
The correct order of bond enthalpy of given molecules is
At T (K), an ideal gas (Z) present in V L flask exerted a pressure of 16.4 atm. Its concentration is 1 mol L$^{-1}$. What is the value of T in K?
The electric field in \( N C^{-1} \) of an electromagnetic wave is \( E = 36 \sqrt{\pi} \sin ( \omega t - kx) \). The average energy density of the electromagnetic wave due to the electric field is:
When light of wavelength \( \lambda \) incidents on a photosensitive material, photoelectrons are emitted. If the wavelength of the incident light is reduced by 50\%, the maximum kinetic energy of the emitted photoelectrons becomes 3 times the initial maximum kinetic energy. The work function of the material is:
The total energy of an electron in an orbit of hydrogen atom is \( E \). The potential energy of the electron in the same orbit is
Positron is the antiparticle of
In the given circuit, when \( A = 1 \), \( B = 1 \) the values of \( X \) and \( Y \) respectively are
A = 1, B = 1 the values of X and Y respectively
In a transistor amplifier, the voltage gain is
The radio horizon of the transmission of an antenna placed on the 20\(^\text{th}\) floor in a shopping mall, where the height of each floor is 2 m is
Two metal wires of same length, same area of cross-section have conductivities of their material \( \sigma_1 \) and \( \sigma_2 \). If they are connected in series, the effective conductivity is:
In the circuit, the cells are having negligible resistances. If the galvanometer shows null deflection, then the value of \( V \) is:
galvanometer shows null deflection,
If \( q \) is electric charge, \( B \) is magnetic field, \( R \) is the dee radius and \( m \) is the mass of ions, the kinetic energy of the ions in cyclotron is given by:
Curl the palm of your right hand around the circular wire with the fingers pointing in the direction of current and the thumb gives the direction of the magnetic field. In this case the upper side of the loop may be thought of as:
The Curie temperature \( T_c \) represents:
Physically, the self-inductance plays the role of:
A resistor of 100 \( \Omega \), an inductor of \( \frac{25}{\pi} \) mH, and a capacitor of 0.1 \( \mu \)F are connected in series to an ac source. The impedance of the circuit is minimum for a frequency of: