Class 11th

Among the following compounds, geometrical isomerism is exhibited by:

The major product formed in the following reaction is: CH?CH=CHCH(CH?)? --(HBr)-->

The increasing order of boiling points of the following compounds is:

The correct statement about probability density (except at infinite distance from nucleus) is:

Lattice enthalpy and enthalpy of solution of NaCl are 788 kJ mol?¹ and 4 kJ mol?¹, respectively. The hydration enthalpy of NaCl is:

The correct order of the ionic radii of O²⁻, N³⁻, F⁻, Mg²⁺, Na⁺ and Al³⁺ is:

The compound that has the largest H-M-H bond angle (M = N, O, S, C), is

A body of mass 2 kg, is driven by an engine delivering, a constant power 1 J/s. the body starts from rest and moves in a straight line. After 9 seconds, the body has moved a distance (in m)

Nitrogen has is at 300° temperature. The temperature (in K) at which the rms speed of a H? molecule would be equal to the rms speed of a nitrogen molecule, is (Molar mass of N? gas 28 g)

A thin rod of mass 0.9 kg and length 1 m is suspended, at rest, from one end so that in can freely oscillate in the vertical plane. A particle of move 0.1 kg moving in a straight line with velocity 80 m/s hits the rod at its bottom most point and sticks to it (see figure). The angular speed (in rad/s) of the rod immediately after the collision will be