List of top Questions asked in Haryana PMT

Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid. The product so obtained is diazotised and then heated with cuprous bromide. The reaction mixture so formed contains
Fixation of one molecule of $ CO_{2}$ through Calvin cycle requires
During replication of DNA, its two strands separate. Each of these serves as a template for the formation of new strands. Such type of replication is called
During cell division, the spindle fibres get attached to the condensing chromosome at a highly differentiated region. This region is called
Darwins finches provide an excellent evidence in favour of organic evolution. These are related to which of the following evidences?
In the life history of ferns, meiosis occurs at the time of
The length of one turn of the helix in B-form DNA is approximately
A research scholar once collected certain alga and found that its cells contained chlorophyll-$a$, chlorophyll-$d$ and phycoerythrin. The alga must belong to
Eight nucleate embryo sacs are
Double fertilization (or trbsle fusion) leading to initiation of endosperm in angiosperms, requires
Which disease is not caused by viruses ?
The conductivity of $0.20 \,M\, K C l$ solution at $298\, K$ is $0.0248\, S\, cm ^{-1}$. What will be its molar conductivity?
The concentration of hydronium ions in a cup of black coffee is $1.3 \times 10^{-5} M$. What will be the $pH$ of the coffee?
In Lucas test an alcohol react immediately and gives insoluble chloride. The alcohol is
The type of hybridisation of carbon atom in graphite, diamond and Buckminster fullerene are respectively
Nylon-$6 6$ is obtained from
The correct order of acidity is
Which of the following is least volatile?
Air is filled at $60^{\circ} C$ in a vessel of open mouth. The vessel is heated to a temperature $T$ so that $1/4^\text{th}$ part of air escapes. Assuming the volume of the vessel remaining constant, the value of $T$ is
A hydrogen atom emits a photon corresponding to an electron transition from $n=5$ to $n=1$. The recoil speed of hydrogen atom is almost (mass of proton $\approx 1.6 \times 10^{-27} \,kg$ )
A bullet of mass $m$ moving with velocity $v$ strikes a suspended wooden block of mass $M$. If the block rises to a $S$ height the initial velocity of the block will be
A body falls freely from the top of a tower. It covers $36\%$ of the total height in the last second before striking the ground level. The height of the tower is
The fundamental frequency of a closed pipe is $220 \,Hz$. If $\frac{1}{4}$ of the pipe is filled with water, the frequency of the first overtone of the pipe now is
A battery is connected to a uniform resistance wire $AB$ and $B$ is earthed. Which one of the graphs below shows how the current density $J $ varies along $AB$?
A winding wire which is used to frame a solenoid can bear a maximum $10\, A$ current. If length of solenoid is $80\, cm$ and its cross-sectional radius is $3\, cm$ then required length of winding wire is $(B=0.2\, T)$