List of practice Questions

When a dunite comprising pure forsterite undergoes melting, the weight % of MgO in the melt is ........ (answer in one decimal place). Given molecular weights of \( \text{SiO}_2 = 60.08 \), \( \text{MgO} = 40.30 \).

A block of rock with a mass of 72 kg slides on a surface inclined at an angle of 30° as shown in the figure. Assuming no cohesion and friction, the force \( F \) is ........... Newton (answer in one decimal place; acceleration due to gravity = 9.8 m/s²). 

 

A diamondiferous lamproite is ultrapotassic and has a molar \( \text{K}_2\text{O}/\text{Na}_2\text{O} \) ratio of 11. If the \( \text{Na}_2\text{O} \) content of the rock is 0.62 wt%, the \( \text{K}_2\text{O} \) content is .......... wt% (answer in one decimal place; molecular weight of \( \text{Na}_2\text{O} = 61.98 \), and \( \text{K}_2\text{O} = 94.20 \)).

The major products Y and Z in the following reaction sequence are 

The CORRECT order of carbonyl stretching frequencies for the following compounds is 

The sequence of three steps involved in the following conversion is 

The CORRECT expression that corresponds to reversible and adiabatic expansion of an ideal gas is
The electrolyte AB2 ionises in water as
AB2 \( \rightleftharpoons \) \( A^{2+} + 2B^{-} \)
The mean ionic activity coefficient (\( \gamma_{\pm} \)) is

The reaction, \( A \rightarrow \) Products, follows first-order kinetics. If \([A]\) represents the concentration of reactant at time \( t \), the INCORRECT variation is shown in 

 

The behavior of \(Cl_2\) is closest to ideal gas behavior at 
 

With reference to the variation of molar conductivity (\( \Lambda_m \)) with concentration for a strong electrolyte in an aqueous solution, the CORRECT statement is
Which of the following metal(s) is(are) extracted from its(their) sulfide ore(s) by self-reduction/air reduction method?
In a saturated calomel electrode, the saturation is with respect to
Consider the following six solid binary oxides: CaO, Al2O3, PbO, Cs2O, SiO2, and Sb2O3. The pair(s) of ionic oxides is(are)
Choose the CORRECT answer(s) with respect to the magnesium-EDTA titration carried out in the pH range 7 – 10.5, using Solochrome black as indicator

On reaction with NaNO2 and HCl, which of the following amino alcohol(s) will yield compound P? 


The CORRECT statement(s) about carbene is(are)

The compound(s) that shows(show) positive haloform test is(are) 

Tetrapeptide(s) that gives(give) the following product on reaction with Sanger's reagent followed by hydrolysis is(are) 

Which of the following set(s) of quantum numbers is(are) NOT allowed?
The CORRECT expression(s) for isothermal expansion of 1 mol of an ideal gas is(are)

The number of possible isomers for \( [Pt(\text{py})(NH_3)BrCl] \) is .......... (py is pyridine)
 

The volume of 0.3 M ferrous ammonium sulphate solution required for the completion of redox titration with 20 mL of 0.1 M potassium dichromate solution is ............. mL.

Among the following hydrocarbon(s), how many of them would give rise to three groups of proton NMR peaks with 2:2:3 integration ratio? 

The number of stereoisomers possible for the following compound is .......