List of practice Questions

The ultimate source of energy in biosphere is
The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for
Standard electrode potential of three metals $X, Y $ and $Z$ are $-1.2\,V, + 0.5\,V$ and $-3.0\,V $respectively. The reducing power of these metals will be
A chemical reaction proceeds into the following steps Step I,$\hspace15mm 2A \rightleftharpoons X$ fast Step II,$\hspace10mm X + B \rightleftharpoons Y$ slow Step III,$\hspace10mm Y + B \rightleftharpoons $ Product fast The law for the overall reaction is
An alkene having molecular formula $C_8H_{12}$ on ozonolysis yields glyoxal and 2, 2-dimethyl butane-1, 4-dial. The structure of alkene is
By what factor does the average velocity of a gaseous molecule increase when the temperature (in kelvin) is doubled?
Phagocytosis and pinocytosis are collectively termed as
The amount of heat evolved when $500 \, cm^3$ of $0.1 \, M \, HCl$ is mixed with $200\,cm^3$ of $0.2 \, M \, NaOH$ is
Effective filtration pressure in glomerulus is caused due to...................
Which of the following conditions correctly describes the manner of determining the sex in the given example ?
Bacillus thuringiensis forms protein crystals which contain insectidical protein. This protein
The potential energy of a system increases if work is done
The following is the diagram of T.S. of Anther. Identify the parts labelled A, B, C.
A coil has resistance $30$ ohm and inductive reactance $20$ ohm at $50 \,Hz$ frequency. If an ac source, of $200$ volt, $100\, Hz$, is connected across the coil, the current in the coil will be
A current carrying closed loop in the form of a right angle isosceles triangle $ABC$ is placed in a uniform magnetic field acting along $AB$. If the magnetic force on the arm $BC$ is $\vec{F}$, the force on the arm $AC$ is
Which of the following elements is present as the impurity to the maximum extent in the pig iron?
An organism used as a biofertilizer for raising soyabean crop is
Phenol can be converted to o-hydroxybenzaldehyde by
When 'blue vitriol' is heated at $373 \,K$, the product formed is
Which one among the following is most reactive towards electrophilic substitution reaction?
What fraction of the surface area of earth can be covered to establish communication by one geostationary statellite?
Chloroform on heating with silver powder gives
If two bodies stick together after collision and move as a single body, the collision is said to be
In a volumetric experiment, it was found that a solution of $KMnO _{4}$ is reduced to $MnSO _{4}$. If the normality of the solution is $1.0\, N$, then the molarity of the solution will be
The lanthanide element that has the electronic configuration, $ [Xe]4f^{7}5d^{1}6s^{2} $ is