List of top Chemistry Questions asked in Guru Gobind Singh Indraprastha University Common Entrance Test

The reaction below represents the Haber process for the industrial production of ammonia, \[ N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g); \Delta H^\circ = -92 \, {kJ} \] The optimum conditions of temperature and pressure are chosen as a compromise between those that favour a high yield of ammonia and those that favour a fast rate of production. Economic considerations are also important. Which statement is correct?
An object experiences a greater buoyant force in seawater than in fresh water. The most likely reason for this is
Beryllium gives a compound X with the following percentage composition: Be = 6.1%, N = 37.8%, Cl = 48%, H = 8.1%. The molecular weight of X is 148 g/mol and that of Be is 9 g/mol. The molecular formula of the compound is:
Ammonia burns in air to form nitrogen dioxide and water. \[ 4{NH}_3(g) + 7{O}_2(g) \longrightarrow 4{NO}_2(g) + 6{H}_2{O}(l) \] If 8 moles of NH3 are reacted with 14 moles of O2 in a rigid container with an initial pressure of 11 atm, what is the partial pressure of NO2 in the container when the reaction runs to completion? (Assume constant temperature)
Which of the following represents an ester?
Which of the following expressions represents the solubility product for Cu(OH)$_2$?
Given a molecule with the general formula AB, which one of the following would be the most useful in determining whether the molecule was bent or linear?
Among \( [\text{Ni(CN)}_4]^{2-} \), \( [\text{NiCl}_4]^{2-} \), and \( [\text{Ni(CO)}_4] \), which one has the following:
When 2.00 g of a certain volatile liquid is heated, the volume of the resulting vapour is 821 mL at a temperature of 127°C at standard pressure. The molecular mass of this substance is:
\(\text{NH}_3\) has a \( K_b \) of \( 1.8 \times 10^{-3} \). Which of the following has a \( 5.6 \times 10^{-10} \)?
All of the following may be true concerning catalysts and the reaction which catalyse except,
Among all the given compounds, which will have D-configuration?
Which of the following stereoisomers is a major image of itself?
Calculate the mass percent of 60 g H2SO4 dissolved in the solution of 180 mL of water.
What is the minimum power required for heat engine to lift a 80 kg mass 5 m in 20 s if it releases 1000 J of heat energy from its exhaust each second?
What happens when the temperature of a reaction increases?
What is the conjugate base of \(H_2CO_3\) according to the Bronsted-Lowry theory?
Which of the following choices represents \(^{239}_{94}Pu\) producing a positron?
Stomach acid has a pH of approximately 2. Sour milk has a pH of 6. Stomach acid is
For the isoelectronic series \(S^{2-}, Cl^{-}, Ar, K^{+}\) and \(v\), which species requires the least energy to remove an outer electron?
Beyond the critical point of H2O
The energy required to excite the electron in the atom from n=1 to n=2, when the ionisation enthalpy of hydrogen atom is \(1.312 \times 10^6\) J/mol will be (in the unit of \(10^5\))
How many milliliters of water must be added to 50.0 mL of 10.0 M HNO3 to prepare 4.00 M HNO3?
Which of the following molecules can be described as having sp hybridisation?
Which of the following best explains, why a hot air balloon rises?