List of top Questions asked in Assam CEE

The total negative charge of all the electrons present in \(100\,g\) of water is
Thermal decomposition of \(2.51\,g\) of an impure sample of \(ZnCO_3\) produces \(0.018\,mol\) of \(CO_2\). The percentage of impurity in \(ZnCO_3\) sample is [Atomic mass of Zn = 65.5]
The equilibrium constants in terms of molar concentration and partial pressure for two reactions are given below. On the basis of these, find the incorrect relationship out of the options given: align* H_2(g)+I_2(g) 2HI(g) K_c and K_p align* align* 2HI(g) H_2(g)+I_2(g) K'_c and K'_p align*
The \(\Delta H\) and \(\Delta S\) values of a reaction are \(400\,\mathrm{kJ\,mol^{-1}}\) and \(200\,\mathrm{J\,K^{-1}\,mol^{-1}}\) respectively which are constant over a wide range of temperature. The temperature above which the reaction will be spontaneous is
The partition wall of negligible volume between two adjacent systems of same composition having volume \(V\), temperature \(T\), pressure \(P\) and density \(d\) of each system, is removed to make one system. What will be the respective parameters of the new system?
Match items of Column-I with those in Column-II. \[ \begin{array}{llll} (a) & \text{A laevorotatory carbohydrate} & (p) & \text{Sucrose} \\[6pt] (b) & \text{A non-reducing sugar} & (q) & \text{Maltose} \\[6pt] (c) & \text{Carbohydrate stored in animal body} & (r) & \text{Fructose} \\[6pt] (d) & \text{A disaccharide made of two glucose units} & (s) & \text{Glycogen} \end{array} \]
Consider the following statements and select the correct option: Statement-I : Solubility of aliphatic amines in water decreases with increase in molecular mass. Statement-II : On increase in size of the hydrophobic alkyl part, higher amines become insoluble in water.
Match the following compounds in Column-I with their uses in Column-II: \[ \begin{array}{llll} (a) & \text{Acetophenone} & (p) & \text{Manufacture of acetic acid} \\[6pt] (b) & \text{Benzaldehyde} & (q) & \text{Preparation of Bakelite} \\[6pt] (c) & \text{Ethanal} & (r) & \text{Preparation of perfumes} \\[6pt] (d) & \text{Methanal} & (s) & \text{To increase good odour and flavour} \end{array} \]
Which one of the following reactions does not occur?
Identify the incorrect statement(s) about \(PCl_5\) molecule from the following: Statement-I : P atom is \(sp^3d\) hybridised.
Statement-II : Shape is trigonal bipyramidal.
Statement-III : The equatorial P--Cl bonds make an angle of \(120^\circ\) with each other.
Statement-IV : Axial P--Cl bond is longer than an equatorial bond.
The increasing order with respect to dipole moment of the following molecules is: align* BF_3, H_2O, NF_3, NH_3 align*
The atomic number of the element with systematic name of Ununnilium is
The rate constant for decomposition of ammonia on platinum surface is \(2.46 \times 10^{-4}\,\mathrm{mol\,L^{-1}\,s^{-1}}\). The rate of production of hydrogen is:
The products obtained during the electrolysis of aqueous solution of sodium chloride are:
Match the batteries given in Column-I with the electrolytes given in Column-II. \[ \begin{array}{llcl} (a) & \text{Lead storage battery} & (r) & 38\% \text{ solution of } H_2SO_4 \\[4pt] (b) & \text{Leclanché cell} & (s) & \text{Moist paste of } NH_4Cl \text{ and } ZnCl_2 \\[4pt] (c) & \text{Mercury cell} & (p) & \text{Moist KOH} \\[4pt] (d) & \text{Nickel-Cadmium cell} & (q) & \text{KOH and ZnO paste} \end{array} \]
A ray of light is incident normally on a refracting face of a prism. The subsequent journey of the ray through the prism is shown in the figure. The refractive index of the prism material is \(1.5\). Find the angle of the prism \((\angle A)\).
A cubical metal block \(5\,cm\) on each side is floating in mercury in a vessel. Now, a liquid is gently poured into the vessel so that it just covers the metal block as shown. What is the depth of the liquid that has been poured over the mercury? Given: \[ \rho_{\text{Hg}}=13.6, \qquad \rho_{\text{metal}}=7.6, \qquad \rho_{\text{liquid}}=1.6 \]
A satellite \(A\) of mass \(m\) is orbiting around the Earth in a stable circular orbit of radius \(r\) and another satellite \(B\) of mass \(2m\) is orbiting in a similar orbit of radius \(2r\). What is the ratio of the time periods of revolution of satellites \(A\) and \(B\)?
Find the value of current \(I\) in the circuit shown in the figure below.
The current-voltage graphs for a given conducting sample at two different temperatures \(T_1\) and \(T_2\) are shown in the figure below. \(R_1\) is the resistance of the sample at temperature \(T_1\) and \(R_2\) is the resistance at temperature \(T_2\). Choose the correct answer.
A battery is kept connected to the plates of a parallel-plate capacitor. A dielectric slab of dielectric constant \(K\) is then introduced between the plates such that it covers the entire space between the plates. Choose the correct answer from the given alternatives.
A hollow metal sphere of radius \(r\) contains a charge \(+Q\). Consider an imaginary circle of radius \(R\,(R\gt r)\) concentric with the charged sphere. A point charge \(q\) is carried from (I) \(A\) to \(B\) and then from (II) \(A\) to \(C\). Choose the correct answer from the given alternatives.
A particle accelerates from rest at constant rate \[ \alpha=6\ \text{m s}^{-2} \] for some time, after which it decelerates at constant rate \[ \beta=4\ \text{m s}^{-2} \] to come to rest. If the total time of travel is \(10\) seconds, what is the maximum speed attained by the particle during its motion?
Three small particles \(A\), \(B\) and \(C\) of equal mass move with equal speed \(v\) along the medians of an equilateral triangle as shown. They collide at the centroid \(G\) of the triangle. After the collision, \(A\) comes to rest, while \(B\) retraces its path with the same speed \(v\). What is the speed and direction of motion of \(C\) after the collision?
Two spheres of the same material have radii \(1\,m\) and \(2\,m\), and temperatures \(2000\,K\) and \(1000\,K\) respectively. What is the ratio of energy radiated per second by the first sphere to that by the second?