List of practice Questions

Malachite is a mineral of
In the nuclear reactions, there is a conservation of
In a coil of self-inductance $5$ henry, the rate of change of current is $2$ ampere per second. The e.m.f. induced in the coil, is
If $???? is stress and $???? is Young?? modulus of a wire material, then energy stored in the wire per unit volume, is
How much amount of oxygen is present in one gram of haemoglobin?
Genes present on Y-chromosome are called
Electron volt (eV) is the unit of
During melting process, the heat given to a body is utilised in
Chromatic aberration of lens can be corrected by
Brass is an alloy of copper (Cu) and
Biosphere is consist of:
At sea level, the value of $g$ is minimum at
Sound waves cannot propagate through vacuum but light waves can. Sound waves cannot be polarised but light waves can be.
Plasmids are single-stranded extra-chromosomal DNA. Plasmids are possessed by eukaryotic cells.
$NO_3^-$ is planar while $NH_3$ is pyramidal. $N$ in $NO_3^-$ is $sp^2$ and in $NH^3$ is $sp^3$ hybridized.
In the descending limb of loops of Henle, the urine is hypertonic, while in ascending limb of loops of Henle, the urine is hypotonic. Descending limb is impermeable to Na , while ascending limb is impermeable to HO.
Chloragogen cells of earthworm are similar to the vertebrate organ
The disorders such as alkaptonuria and phenylketonuria are refered to as
There is an irregular mating population. If the frequency of an autosomal recessive lethal gene is 0.4, then the frequency of the carriers in a population of 200 individuals is
Ora serrata is
The lining of bone marrow cavity is called
The branch of biology dealing with the process of improvement of human race by selective breeding is called
In morula stage, the cells divide without any increase in size. Zona pellucida remains undivided till cleavage is complete.
The disease, in which thick cough, stops the passage of throat and form a layer of mucous membrane, is called
Which of the following is an example of sex-linked inheritance?