List of practice Questions

A force of 10 N acts on a body of mass 0.5 kg for 0.25 sec starting from rest. What is its momentum now?

Find I in shown figure

How much intense is 80 db sound in comparison to 40 dB?

Which of the following compound can exhibit tautomerism?

Red blood cells are placed in a solution and neither haemolysis nor crenation occurs. Therefore, the solution is

When hydrogen peroxide is added to acidified solution of dichromate \(Cr_2O_7^{2-}\), a deep blue coloured complex of chromic peroxide \(CrO_5\) is formed. Oxidation state of \(Cr\) in \(CrO_5\) is

When phenol is treated with \(CHCl_3\) and \(NaOH\) followed by acidification, salicylaldehyde is obtained. Which of the following species is involved in the above mentioned reaction as intermediates?

Which of the following is the correct sequence of step involved in the mechanism of Cannizzaro reaction?

\(CH_3-Br \xrightarrow{\text {Mg/ether}} \xrightarrow{(i)CO_2 \ (ii)Water} \xrightarrow{\Delta,\ CH_3OH/H^+}P\)
What is the product P in the above reaction?

Which of the following is disproportionation reaction?

Which type of drugs come under anti-microbial drugs?

Alkali metals readily dissolve in liquid ammonia to give blue coloured solutions. The blue colour is believed to be due to

Arrange the following polymers in increasing order of their intermolecular forces.
Nylon-6, 6, buna-S, polythene, neoprene

In adiabatic conditions, 2 mole of \(CO_2\)gas at 300 K is expanded such that its volume becomes 27 times. Then, the work done is
(\(C_v=6 \ cal\ mol^-\) and \(γ = 1.33\))

The compounds and are distinguished by

Which of the following is not a surfactant?

Bleeding due to a cut can be stopped by applying ferric chloride solution in the laboratory. This is due to

For the electrochemical cell, \(Ag^-|AgCI|KCI ||AgNO_3|Ag^+\), the overall cell reaction is

If \(E°(Zn^{2+},Zn)=-0.763\ V\) and \(E°(Fe^{2+},Fe)=-0.44\ V\), then the emf of the cell \(Zn/Zn^{2+}(a=0.001)||Fe^{2+}(a=0.005) Fe\) is

In the reversible reaction, \(2NO_2⇋ N_2O_4\) the rate of disappearance of \(NO_2\) is equal to

The IUPAC name of the following compound is

The van't Hoff factor for \(0.1\ M \ Ba(NO_3)_2\), solution is \(2.74\). The degree of dissociation is

Which one of the following electrolytes has the same value of van't Hoff factor \((i)\) as that of \(K_4[Fe(CN)_6]\) ?

A compound, containing only carbon, hydrogen and oxygen has a molecular weight of 44. On complete oxidation, it is converted into a compound of molecular weight is 60. The original compound is

For the dot structure shown, the most likely elements X = ____ and Y = ____ are