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

Which of the following is the \(K_b\) for the conjugate base of carbonic acid?
Calcium chloride is sometimes sprinkled on winter sidewalks to melt snow and ice. If 333g of calcium chloride is dissolved completely in 1.00 kg of water, what will be the freezing point of the solution? (The molal freezing point depression constant for water is 1.86°C kg/mol)
The acid dissociation constant for \( HC_6H_7O_6 \) is \( 8.0 \times 10^{-5} \). If a solution contains equal concentrations of \( HC_6H_7O_6 \) and \( C_6H_7O_6^- \), what will be the pH of the solution?
The values of all of the following are reversed when a reaction is reversed except
The molar masses of C, H, A, CHOH, and CHF are very similar. How do their boiling points compare?
Which of the following groups contains only atoms that are paramagnetic in their ground state?
Which of the following solutions is the most concentrated? (assume 1 L of water has a mass of 1 kg)
NaCl dissolves spontaneously in water. Based upon the following reaction, NaCl(s) $\rightarrow$ Na$^{+}$(g) + Cl$^{-}$(g)
What is the total heat needed to change 1g of water from -10°C to 110°C at 1 atm? \[ \Delta H_{fusion} = 80 \, \text{cal/g}, \Delta H_{vaporisation} = 540 \, \text{cal/g}, \text{specific heat of ice and steam are 0.5 cal/g°C} \]
What is the IUPAC name for the following cycloalkane?
20 g of NaCl is poured into a coffee cup calorimeter containing 250 mL of water. If the temperature inside the calorimeter drops 1°C by the time, the NaCl is totally dissolved, what is the heat of solution for NaCl and water? (specific heat of water is 4.18 J/g°C)
Why can the relative strength of HCl and HClO$_4$ be determined in acetic acid but not in water?
Describe the phase change for H$_2$O as pressure is raised at 100°C.
Rechargeable batteries have become an essential part of our environmentally conscientious society. The nickel-cadmium cell battery is a rechargeable battery used in small electronic devices. The half reactions that take place in the nickel-cadmium battery during discharge are: Half reaction 1: Cd(OH)$_2$(s) + 2e$^{-}$ → Cd(s) + 2OH$^{-}$ Half reaction 2: 2NiO$_2$(s) + H$_2$O + 2e$^{-}$ → 2Ni(OH)$_2$(s) + 2OH$^{-}$ What is the oxidising agent in the nickel cadmium battery during discharge?
Aldehydes are readily oxidised to yield carboxylic acids but ketones are inert to oxidation. Which is the most likely explanation regarding this difference in reactivity?
Which of the following would be the most soluble in water?
Which molecular formula is also an empirical formula?
A man straightens up his room. His action does not violate the second law of thermodynamics because
Toluene reacts with excess of Cl$_2$ in the presence of sunlight to give a product which on hydrolysis followed by reaction with NaOH gives
An imaginary metal crystallises in a cubic lattice. The unit cell edge length is 100 pm, (1 pm = $10^{-12}$ m). The density of this metal is 200 g/cm\(^3\). The atomic mass of the metal is 60.2 g/mol. How many of these metal atoms are there within a unit cell?
A buffer is formed by adding 500 ml of 0.20 M correct to 500 mL of 0.10 M NaC H$_2$O$_2$. What would be the maximum amount of HCl that could be added to this solution without exceeding the capacity of the buffer?
The shortest bond would be present in which of the following substances?
Which of the following does not show hydrogen bonding?
The product formed by the condensation reaction of alcohols is
Which of the following is true for an acid-base concentration cell such as the one used by the pH meter?