List of practice Questions

Sodium crystallizes in bcc structure with radius 1.86 \(\times\) 10\(^{-8}\) cm. What is the edge length of unit cell of sodium?

According to Andrews isothermals, at what temperature the carbon dioxide gas starts to condense at 73 atmosphere?

How many pi bonds and sigma bonds are present in the following molecule?

Which among the following coordination compounds does not have coordination number equal to the number of ligands?

Which among the following statements about terpenes is NOT true?

Identify ‘A’ in the following reaction: \[ R-\text{NO}_2 \xrightarrow{\text{Zn}/\text{NH}_4\text{Cl}, \text{neutral medium}} A + \text{H}_2\text{O} \]

Which among the following elements is a soft element as compared to others?

Which among the following gas is bubbled through the brine solution during the preparation of sodium carbonate in Solvay's process?

Which of the following is Rosenmund reduction?

Identify the polymer obtained by heating n moles of isobutylene with n moles of isoprene at 100°C in the presence of anhydrous AlCl\(_3\).

In the reaction: \[ N_2 (g) + 3H_2 (g) \rightarrow 2NH_3 (g) \] The rate of disappearance of H\(_2\) is 0.02 M/s. The rate of appearance of NH\(_3\) is:

Which among the following reactions occurs at the zone of slag formation in extraction of iron by blast furnace?

The P-P-P bond angle in white phosphorus is

Which of the following statement is NOT correct about solution?

Enthalpy of fusion and enthalpy of vaporization for water respectively are 6.01 kJ mol\(^{-1}\) and 45.07 kJ mol\(^{-1}\) at 0°C. What is enthalpy of sublimation at 0°C?

In the reaction: \[ 2 \text{KClO}_3 (s) \rightarrow 2 \text{KCl} (s) + 3 \text{O}_2 (g) \quad \Delta H = -78 \, \text{kJ} \] If 33.6 L of oxygen gas is liberated at S.T.P., what is the mass of KClO\(_3\) produced?

In resonance hybrid of ozone molecule, O-O bond length is

Which of the following changes will cause an increase in vapor pressure of 1 molal aqueous KI solution at the same temperature?

Which of the following is a character of catalyst?

Identify the decreasing order of boiling point of alkanes (i) n-pentane (ii) Isopentane (iii) Neopentane

Which of the following oxyacid of sulfur contains S=S linkage?

Methoxy ethane on reaction with hot concentrated HI gives

When alkyl halide is boiled with large excess of alcoholic ammonia it forms

Which of the following pairs of solution is isotonic?
(Molar mass of urea = 60, sucrose = 342 g mol\(^{-1}\))

Two coaxial coils A and B of radii \( R_1 \) and \( R_2 \) are placed in the same plane. (\( R_2 \geq R_1 \)). If a current is passed through coil B, the coefficient of mutual inductance between the coils is proportional to