List of practice Questions

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.
An electric motor operates on a $50\, V$ supply and a current of $12\, A$. If the efficiency of the motor is $30\%$, what is the resistance of the winding of the motor?
Which one of the following is not present in RNA?
The substance used as pigment in paint is:
A certain mass of gas occupies a volume of $2$ litre at STP keeping the pressure constant. At what temperature would the gas occupy a volume of $4$ litre?
In the compounds $KMnO_{4}$ and $K_{2}Cr_{2}O_{7},$ the highest oxidation state is of the element: