List of top Questions asked in NEET (UG)- 1999

The escape velocity of a sphere of mass m is given by (G = Universal gravitational constant; M = Mass of the earth and R = Radius of the e earth)
The oxidation number of phosphorus in pyrophosphoric acid is
Gammexane is
A $ 500 \,kg $ car takes a round turn of radius $ 50\, m $ with a velocity of $ 36\, km/h $ . The centripetal force is
The rate of photosynthesis is higher in
The respiratory centres, which control inspiration and expiration, are located in
Who modified Bohr's theory by introducing elliptical orbits for electron path?
The specific conductance of a $N / 10 \,KCl$ at $25^{\circ} C$ is $0.0112\, ohm ^{-1} cm ^{-1} .$ The resistance of cell containing solution at the same temperature was found to be $55\, ohm$. The cell constant will be
A potentiometer consists of a wire of length 4 m and resistance $10\, \Omega$ It is connected to a cell of e.m.f. 2 V. The potential difference per unit length of the wire will be
In a meter bridge, the balancing length from the left end (standard resistance of one ohm is in the right gap) is found to be 20 cm. The value of the unknown resistance is
The solubility of a saturated solution of calcium fluoride is $2 \times 10^{-4}$ moles per litre. Its solubility product is
The joint between atlas and axis is called
Time period of a simple pendulum is 2 sec. If its length is increased by 4 times, then its period becomes