List of practice Questions

$A$ and $B$ antigens are not found in which of the following blood group?
A satellite revolves round the earth. Air pressure inside the satellite is maintained at $76 \,cm$ of mercury. What will be height of mercury column in a barometer tube $100\, cm$ long placed in the satellite?
A rigid bar of mass $M$ is supported symmetrically by three wires each of length $L$. Those at each end are of copper and the middle one is of iron. The ratio of their diameters, if each is to have the same tension, is equal to
If $13 e^{i \, \tan^-1} \frac{5}{12}} = a + ib $, then the ordered pair $(a , b) = $
Two point charges $+2C$ and $+ 6C$ repel each other with a force of $12 \,N$. If a charge of $- 2C$ is given to each of these charges the force will now be
A metal oxide has the formula $ A_{2}O_{3}$ . It can be reduced by hydrogen to give free metal and water. $0.1596\, g$ of this metal oxide requires $6\, mg$ of hydrogen for complete reduction. What is the atomic weight of metal?
In the $ABO$ system of blood groups, if both antigens are present but no antibody, the blood group of the individual would be
A box whose mass is $5\, kg$ lies on a spring balance inside a lift. The lift starts to ascend with an acceleration of $2\, ms ^{-2}$. The reading of the machine or balance is $\left(g=10\, ms ^{-2}\right)$
The major product of the reaction of with electrophile, $ E^{+} $ , is
Which one of the following is an example of $ 3^{\circ} $ amide?
If $A =(5,3) , B = (3, -2)$ and a point $P$ is such that the area of the triangle $PAB$ is $9$, then the locus of $P$ represents
Which of the following is the most dangerous metal pollutant of automobile exhaust ?
Which of the following species is not electrophilic in nature ?
Which one is not a pollutant normally?
Which one of the following is a chain growth polymer ?
Which one of the following pairs is not correctly matched?
Which one of the following statements is wrong ?
When ammonia is heated with cupric oxide, a molecule of ammomia will
What is not true for genetic code ?
In intrinsic semiconductor at room temperature number of electrons and holes are
$4.5\, g$ of aluminium (at. mass $27\, u$ ) is deposited at cathode from a molten electrolyte containing $Al ^{3+}$ ions by a certain quantity of electric charge. The volume of hydrogen produced at STP from $H ^{+}$ions in a solution by the same quantity of electric charge will be
Fusion reaction is initiated with the help of
Father of green revolution in India is:
During G phase of cell division
$B_2$ molecule is diamagnetic. The highest occupied molecular orbital is of $\sigma$ type.