List of practice Questions

The number of electron in $2$ coulomb of charge is
A dorsal horn is present on the___________of mulberry silk worm (caterpillar).
A RBC and a plant cell (with thick cell wall) are placed in distilled water. The solute concentration is the same in both the cells . What changes would be observed in them
A beam of light of wavelength 600 nm from a distant source falls on a single slit I mm wide and the resulting diffraction-pattern is observed on a screen 2m away. The distance between the first dark fringes on either side of the central bright fringe is
For the constructive interference the path difference between the two interfering waves must be equal to
An organic compound on heating with $CuO$ produces $CO_2$, but no water. The organic compound may be
A door of $1.6\, m$ wide requires a force of $1 \,N$ to be applied at the free end to open or close it. The force that is required at a point $0.4\, m$ distant from the hinges for opening or closing the door is
Which of the following does not show optical isomerism? (en = ethylenediamine)
A cow is tied to a post by a rope. The cow moves along the circular path always keeping the rope tight. If it describes $44\, metres$, when it has traced out $72^\circ$ at the centre, the length of the rope is
The complex number $\frac {1+2i}{1-i}$ lies in
For the parabola $y^2 = 4x$, the point $P$ whose focal distance is $17$, is
The area bounded between the parabola $y^2= 4x$ and the line $y = 2x - 4$ is equal to
Nosema bombycis which causes pebrine in silk worms is a
The number of subgroups of the group $(Z_5, +_5)$is
Angle between $y^{2}=x$ and $x^{2}=y$ at the origin is
Damage to thymus in a child may lead to
The characteristic that is shared by urea, uric acid and ammonia is/are A. They arc nitrogenous wastes B. They all need very large amount of water for excretion C. They are all equally toxic D. They are produced in the kidneys
Most of the endangered species are the victims of
Transpiration facilitates
Match the names of the economically important plants (or their products) listed in Column-I with the families to which they belong given in column-II. Choose the answer which gives the correct combination of alphabets of the two columns : Column-I - Column II A. Sunflower - p. Acanthaceae B. Tulsi - Composite C.Cofee - r. Labiatae D.Vasaka - s. Rubiaceae - t Euphorbiaceae
The respiratory quotient during cellular respiration would depend on
Decreasing order of stability of ions is (i) $\quad$$CH_3 - C^+H - CH_3$ (ii) $\quad$$CH_3-C^+H-OCH_3$ (iii) $\quad$$CH_3 - C^+H - COCH_3$
The agents which are known to cause CJD are
In the balanced chemical reaction $IO^{-}_{3}+aI^{-}+bH^{+}\to cH_{2}O+ dI_{2}$ $a, b, c$ and $d$ respectively corresponds to
A 100 mH coil carries 1 A current. Energy stored in its magnetic field is