List of practice Questions

The carbon dioxide is transported via blood to lungs mostly
The primary succession refers to the development of communities on a
The pyrenoids are made up of
In an egg, the type of cleavage is determined by
On heating one end of a piece of a metal, the other end becomes hot because of
Identify the correct match between tiger reserve and its state
'Nothing lives for ever, but life continues'. What does it mean?
The number of possible isomers of the compound with molecular formula $C_7H_8 O$ is
The normal boiling point of water is 373 K(at 760 mm). Vapour pressure of water at 298 K is 23 mm. If enthalpy of vaporisation is 40.656 kJ the boiling point of water at 23 mm atmospheric pressure will be
The function $f(x) = [x] \cos \left(\frac{2x-1}{2}\right) \pi$, [.] denotes the greatest integer function, is discontinuous at
The $ BCl_3$ is a planar molecule whereas $NCl_3$ is pyramidal because
The prokaryotic flagella possess
The number of floating ribs in the human body is
The mammalian corpus luteum produces
If enthalpies of formation for $C _{2} H _{4}(g), CO _{2( g )}$ and $H _{2} O _{(1)}$ at $25^{\circ} C$ and $1\, atm$ pressure are $52,-394$ and - $286\, kJ / mol$ respectively, then enthalpy of combustion of $C _{2} H _{4}( g )$ will be
The concentration units independent of temperature would be
The correct order of the $O - O$ bond length in $O_2,H_2 O_2 $ and $O_3 $ is
The count rate of a Geiger Muller counter for the radiation of a radioactive material of half-life of 30 minutes decreases to 5 second$^{-1}$ after 2 hours. The initial count rate was
The percentage weight of Zn in white vitriol $[ZnSO_4 . 7H_2O]$ is approximately equal to $(at. \, mass\, of \, Zn= 65, S=32, 0=16 \, and \, H= 1)$
Stainless steel contains iron and
A star, which is emitting radiation at a wavelength of $5000$ $�$ is approaching the earth with a velocity of $1.5 \times 10^4m/s.$ The change in wavelength of the radiation as received on the earth is
The earth (mass = $ 6 \times {10}^{24} $ kg) revolves around the sun with an angular velocity of $ 2 \times {10}^{-7} rad/s$ in a circular orbit of radius $ 1.5 \times {10}^8 km$. The force exerted by the sun on the earth, in newton, is
The loss of electron is termed as
The number of geometrical isomers for [Pt(NH3)2Cl2] is
The oxidation number of chromium in potassium dichromate is