List of practice Questions

The number of solutions of the equation \(\sin(e^x)=5+x-5^x\), is
If \(a^x=b^y=c^z=d^u\) and \(a,b,c,d\) are in GP, then \(x,y,z,u\) are in
If \(z\) satisfies the equation \(|z|=z-1+2i\), then \(z\) is equal to
Glycerol on treatment with oxalic acid at \(110^\circ C\) forms
The reaction, \(ROH + H_2CN_2\) in the presence of \(HBF_4\), gives the following product
Transition metals usually exhibit highest oxidation states in their
Which of the following converts \(CH_3CONH_2\) to \(CH_3NH_2\)?
Which metal aprons are worn by a radiographer to protect him from radiation?
Nitrobenzene can be converted into azobenzene by reduction with
The one which is least basic is
Sterling silver is
Identify the statement which is not correct regarding \(CuSO_4\).
Which of the following compounds is not coloured?
The formula of ethyl carbinol is
Which of the following gives red colour in Victor Meyer’s test?
Enthalpy of a compound is equal to its
For which one of the following reactions will there be a positive \(\Delta S\)?
Across the lanthanide series, the basicity of the lanthanide hydroxides
When p-nitrobromobenzene reacts with sodium ethoxide, the product obtained is
An AM wave has \(1800\,W\) of total power content. For \(100%\) modulation the carrier should have power content equal to
Two light rays having same wavelength \(\lambda\) in vacuum are in phase initially. Then the first ray travels a path \(l_1\) through a medium of refractive index \(n_1\) while the second ray travels a path of length \(l_2\) through a medium of refractive index \(n_2\). The two waves are combined to observe interference. The phase difference between the two waves is
In the reaction sequence:
\[ \text{C}_2\text{H}_5\text{I} \xrightarrow{\text{Alcoholic KOH}} X \xrightarrow{\text{Br}_2/\text{CCl}_4} Y \xrightarrow{\text{KCN}} Z \xrightarrow{H_3O^+} A \] The product \(A\) is
In the hydrogen atom, the electron is making \(6.6\times 10^{15}\,rps\). If the radius of orbit is \(0.53\times 10^{-10}\,m\), then magnetic field produced at the centre of the orbit is
Two identical light sources \(S_1\) and \(S_2\) emit light of same wavelength \(\lambda\). These light rays will exhibit interference if
In Meter bridge or Wheatstone bridge for measurement of resistance, the known and the unknown resistances are interchanged. The error so removed is