List of practice Questions

Which one of the following ionic species will impart colour to an aqueous solution ?
Iodoform test is not given by
Genetic engineering is possible, because
Velocity of light, according to this theory, is greater in a denser medium than in a rarer medium
Numerical aperture of an oil immersion objective using oil of R.I. 1.5 is 0.75. Then, its numerical aperture, when kept in air is
A mirror produces a magnified erect image of an object. The nature of the mirror is
Time of exposure for a photographic print is 10 s, when a lamp of 50 cd is placed at 1 m from it. Then another lamp of luminous intensity I is used, and is kept at 2 m from it. If the time of exposure now is 20 sec, the value of I is (cd)
??hip-tail?
A fair coin is tossed repeatedly. If tail appears on first four tosses, then the probability of head appearing on fifth toss equals:
The most reactive compound, for the electrophilic nitration, is
The physical adsorption of gases on the solid surface is due to
Which of the following explains the sequence of filling the electrons in different shells?
The oxidation numbers of hydrogen in $K H ,\, MgH _{2}$ and $NaH$ are respectively
In the gas equation: $PV = nRT$
Which of the following does not show hydrogen bonding?
Which of the following is the most electropositive element?
A quanity of heat required to change the unit mass of a solid substance, from solid state to liquid state, while the temperature remains constant, is known as
The waves in which the particles of the medium vibrate in a direction perpendicular to the direction of wave motion is known as
The dimensions of angular velocity, is
If the kinetic energy of a body becomes four times of its initial value, then new momentum will
A bullet is fired from a rifle. If the rifle recoils freely, then the kinetic energy of the rifle, is
If the equation for the displacement of a particle moving on a circular path is given by $(\theta)=$ $2 t^{3}+0.5$ where $\theta$ is in radians and $t$ in seconds, then the angular velocity of the particleat $t = 2\, sec$, is
Which of the following compounds will show geometrical isomerism?
According to Fajans rule covalent bond is favoured by:
Which of the following statement (s) is (are) correct ?