List of practice Questions

Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of
Distance between successive compression and rarefaction is $1 \,m$ and velocity of sound is $360 \,ms^{-1}$. Find frequency :
1 mole of $H_{2}$ and 2 moles of $I_{2}$ are taken initially in a 2 litre vessel. The number of moles of $H_{2}$ at equilibrium is 0.2. Then the number of moles of $I_{2}$ and $HI$ at equilibrium are
The science of heredity is called as 'Genetics' . The word 'Genetics' comes from the word
Which one is the correct chromosome complement of Downs syndrome
Which amino acid is specified by the genetic codes ACU, ACC, ACA, ACG showing degeneracy
The auxins are abundantly produced in
The primary function of the myelin sheath around a vertebrate axon is to
Phospholipids are important cell membrane constituents because they
Chlorosis occurs when plants are grown in
Ligaments are the connective tissues that connect
Cyanobacteria are particularly useful as biofertilizers in the fields of
Usnic acid is an antibiotic obtianed from
In terms of energy $1$ amu is equal to:
The half-life period of a radioactive material is $15\, \min.$ What per cent of radioactivity of that material will remain after $45$ minutes?
Consider a two particle system with particles having masses $m_1$ and $m_2$. If the first particle is pushed towards the centre of mass through a distance $d$, by what distance should the second particle be moved, so as to keep the centre of mass at the same position ?
Circulatory system in earthworm is
Chromophil cells are found in:
For reversible process, the value of $\Delta S$ is gives by the expression:
When $ {{H}_{2}}S $ gas is passed in a metal sulphate solution in presence of $ N{{H}_{4}}OH $ , a white precipitate is produced. The metal is identified as:
The value of amu is which of the following?
The molecule having largest dipole moment among the following is:
Which one of the following can produce hydrogen when treated with metallic sodium?
$ CH_3COOH $ is weaker acid than $H_2SO_4$ . It is due to:
By sucking through a straw, a student can reduce the pressure in his lungs to $750\, mm$ of $Hg$ (density $= 13.6\, g/cm^3$ ). Using the straw, he can drink water from a glass upto a maximum depth of