List of practice Questions

The correct increasing order of ionic radii of the following \(Ce^{3+}, La^{3+}, Pm^{3+}\) and \(Yb^{3+}\) is

The shape of gaseous \(\text{SnCl}_2\) is

Which of the following aqueous solution should have highest boiling point?

When a lead storage battery is discharged

The combustion of glucose takes place according to the equation:\[\text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2 \rightarrow 6\text{CO}_2 + 6\text{H}_2\text{O}, \Delta H = -72 \text{ k-cal}\]The energy required for the combustion of 1.6 g of glucose is

Which of the following is not expected to show paramagnetism?

A cubic unit cell of a metal with molar mass of \(63.55 g mol^{-1}\) has an edge length of 362 pm. Its density is \(8.92 g cm^{- 3}\). The type of unit cell is

Which of the following is the major product in the reaction of HOBr with propene?

Which of the following is the correct IUPAC name?

Consider the following solutions, A = 0.1 glucose, B = 0.05 M NaCl, \(C = 0.05 M BaCl_2, D = 0.1 M AlCl_3\) Which of the following pairs is isotonic?

Which of the following compound is not coloured?

Which of the following oxide is most acidic?

When \(CO_2\) is bubbled through a solution of barium peroxide in water then

Among the following set of quantum numbers, the impossible set is

\[\text{Phenol} \xrightarrow{\text{(i) NaOH, (ii) CO}_2, \, \text{140°C}} \text{A} \xrightarrow{\text{H}^+/\text{H}_2\text{O}}\text{B}\xrightarrow{\text{Ac}_2\text{O}} \text{C}\]
In the above reaction, end product 'C' is

Which of the following is least soluble in water?

Isopropyl chloride + A \(\xrightarrow{\triangle}\)2-ethoxy propane + NaCl. The compound (A) is

The product (P) is

1-butyne on oxidation with hot alkaline \(KMnO_4 \)would yield. Which of the following as end product?

An ice-berg of density \(900\ kgm^{-3}\) is floating in water of density \(1000\  kgm^{-3}\). The percentage of volume of ice-berg outside the water is

The potential of an atom is given by \(V=Vo\ log_e (\frac {r}{r_o})\), where \(r_o\) is a constant and \(r\) is the radius of the orbit. Assuming Bohr's model to be applicable, which variation of \(r_n\) with \(n\) is possible (\(n\) being principal quantum number)?

The temperature of source and sink of a heat engine are 127°C and 27°C, respectively. An inventor claims its efficiency to be 26%, then

You are given resistance wire of length 50 cm and a battery of negligible resistance. In which of the following cases is largest amount of heat generated?

The compressibility of a gas is less than unity at STP; therefore

A stick of length L and mass M lies on a frictionless horizontal surface on which it is free to move in any way. A ball of mass m moving with speed V collides elastically with the stick as shown in fig below. If after the collision, the ball comes to rest, then what should be the mass of the ball?