List of practice Questions

If \( Z = 7x + y \) subject to \[ 5x + y \geq 5, \quad x + y \geq 3, \quad x \geq 0, \quad y \geq 0, \quad \text{then the minimum value of } Z \text{ is} \]
Which among the following elements has the lowest density and is lightest?
What is the value of radius ratio of ionic crystal having coordination number six?
What is the molar conductivity of 0.1 M NaCl if its conductivity is \(1.06 \times 10^{-2} \, \Omega^{-1} \, \text{cm}^{-1}\text{cm}^{-1}\)?
If a mixture of iodomethane and iodethane is treated with sodium metal in presence of dry ether, it forms:
Which of the following reactions does NOT yield an amine?
Which of the following carbonyl compounds does NOT undergo aldol condensation?
What happens during Bessemerization process of extraction of copper from copper pyrites?
What is the common unit of conductivity if the dimensions are expressed in centimeter?
Blurring of vision is a side effect caused by the use of:
Identify 'Z' in the following series of reactions: \[ \text{Butan-2-ol} \xrightarrow{\text{PCl}_3} X \xrightarrow{\text{alc. KOH}} Y \xrightarrow{i) \, \text{H}_2\text{SO}_4, \, ii) \, \text{H}_2\text{O}/\text{heat}} Z \]
What is the boiling point of heavy water?
What is the effective atomic number of Fe in [Fe(CN)\(_6\)]\(^{4-}\) (At. no. of Fe = 26)?
The rate constant for a second-order reaction, A \(\rightarrow\) Product is 1.62 M\(^{-1}\)s\(^{-1}\). What will be the rate of reaction when the concentration of reactant is 2 \(\times\) 10\(^{-3}\) M?
Calcite crystals used in Nicol’s prism are formed of:
H\(_2\) molecule is more stable than Li\(_2\) molecule, because:
Which of the following monomers is used in manufacture of Neoprene rubber?
The unit of atomic mass, amu is replaced by u, here u stands for:
What is the lowest oxidation state possessed by phosphorus in its oxyacids?
Which of the following antihistamines contains the -CN group?
Identify the product Y in the following reaction: \[ \text{Maltose} \xrightarrow{\text{Hydrolysis}} X \xrightarrow{\text{dil.HNO}_3 (\text{excess})} Y \]
When carbolic acid is heated with concentrated nitric acid in the presence of concentrated sulphuric acid, it forms:
Which of the following compounds is obtained when t-butyl bromide is treated with alcoholic ammonia?
For the following reaction: \[ \text{Fe}_2\text{O}_3(s) + 3\text{CO}(g) \rightarrow 2\text{Fe}(s) + 3\text{CO}_2(g) \] Given that \(\Delta H^\circ = -29.8 \, \text{kJ}\) \text{and} \(\Delta S^\circ = 15 \, \text{J/K}\), what is the value of \(\Delta S_{\text{total}}\) at 298 K?
What is the oxidation number of carbon in glucose?