NEET 2019 Question Paper with Solutions

A small hole of area of cross-section 2 \(mm^2\) present near the bottom of a fully filled open tank of height 2 m. Taking g = 10 \(m/s^2\) the rate of flow of water through the open hole would be nearly: \(8.9 \times 10^{-6}\ \text{m}^3/\text{s}\) \(2.23 \times 10^{-6}\ \text{m}^3/\text{s}\) \(6.4 \times 10^{-6}\ \text{m}^3/\text{s}\) \(12.6 \times 10^{-6}\ \text{m}^3/\text{s}\)

A force F = 20 + 10y acts on a particle in y-direction where F is in newton and y in meter. Work done by this force to move the particle from y = 0 to y = 1 m is: 5 J 25 J 20 J 30 J

Average velocity of a particle executing SHM in one complete vibration is: \(A\omega\) \(\frac{A\omega}{2}\) \(\frac{A\omega^2}{2}\) zero

When a block of mass M is suspended by a long wire of length L the length of the wire becomes (L + l). The elastic potential energy stored in the extended wire is: Mgl \(MgL\) \(\frac{1}{2}Mgl\) \(\frac{1}{2}MgL\)

A solid cylinder of mass 2 kg and radius 4 cm is rotating about its axis at the rate of 3 rpm. The torque required to stop after \(2\pi\) revolutions is: \(2 \times 10^{-3}\ \text{N m}\) \(2 \times 10^{-6}\ \text{N m}\) \(2 \times 10^6\ \text{N m}\) \(12 \times 10^{-4}\ \text{N m}\)

Which of the following series of transitions in the spectrum of hydrogen atom falls in visible region? Paschen series Brackett series Lyman series Balmer series

A gas at 350 K and 15 bar has molar volume 20 percent smaller than that for an ideal gas under the same conditions. The correct option about the gas and its compressibility factor (Z) is - Z 1 and attractive forces are dominant Z > 1 and repulsive forces are dominant

4d 5p 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is: 6p > 5f > 4d > 5p 5f > 6p > 4d > 5p 5f > 6p > 5p > 4d 6p > 5f > 5p > 4d

An alkene 'A' on reaction with \(O_3\) and Zn + \(H_2O\) gives propanone and ethanal in equimolar ratio. Addition of HCl to alkene 'A' gives 'B' as the major product. The structure of product 'B' is:

The method used to remove temporary hardness of water is: Ion-exchange method Synthetic resins method Calgon's method Clark's method

Pick the wrong answer in the context with rainbow. An observer can see a rainbow when his front is towards the sun. Rainbow is a combined effect of dispersion refraction and reflection of sunlight. When the light rays undergo two internal reflections in a water drop a secondary rainbow is formed. The order of colours is reversed in the secondary rainbow.

In a double slit experiment when light of wavelength 400 nm was used the angular width of the first minima formed on a screen placed 1 m away was found to be \(0.2^\circ\). What will be the angular width of the first minima (\(\mu_{water} = 4/3\)) if the entire experimental apparatus is immersed in water? \(0.15^\circ\) \(0.05^\circ\) \(0.1^\circ\) \(0.266^\circ\)

A parallel plate capacitor of capacitance \(20\mu F\) is being charged by a voltage source whose potential is changing at the rate of 3 V/s. The conduction current through the connecting wires and the displacement current through the plates of the capacitor would be respectively: zero zero zero \(60\mu A\) \(60\mu A\) \(60\mu A\) \(60\mu A\) zero

The correct Boolean operation represented by the circuit diagram drawn is: OR NAND NOR AND

For a p-type semiconductor which of the following statements is true? Holes are the majority carriers and trivalent atoms are the dopants. Holes are the majority carriers and pentavalent atoms are the dopants. Electrons are the majority carriers and pentavalent atoms are the dopants Electrons are the majority carriers and trivalent atoms are the dopants.

Which of the following species is not stable? \([Sn(OH)_6]^{2-}\) \([SiCl_6]^{2-}\) \([SiF_6]^{2-}\) \([GeCl_6]^{2-}\)

Which mixture of the solution will lead to the formation of negatively charged colloidal \([AgI]I^-\) sol.? 50 mL of 2 M \(AgNO_3\) + 50 mL of 1.5 M KI 50 mL of 0.1 M \(AgNO_3\) + 50 mL of 0.1 M KI 50 mL of 1 M \(AgNO_3\) + 50 mL of 1.5 M KI 50 mL of 1 M \(AgNO_3\) + 50 mL of 2 M KI

Among the following the one that is not a green house gas is: ozone sulphur dioxide nitrous oxide methane

Match the Xenon compounds in Column-I with its structure in Column-II and assign the correct code: (a) (b) (c) (d) (ii) (iii) (i) (iv) (a) (b) (c) (d) (iii) (iv) (i) (ii) (a) (b) (c) (d) (i) (ii) (iii) (iv) (a) (b) (c) (d) (ii) (iii) (iv) (i)

Which is the correct thermal stability order for \(H_2E\) (E = O S Se Te and Po)? \(H_2Po < H_2Te < H_2Se < H_2S < H_2O\) \(H_2Se < H_2Te < H_2Po < H_2O < H_2S\) \(H_2S < H_2O < H_2Se < H_2Te < H_2Po\) \(H_2O < H_2S < H_2Se < H_2Te < H_2Po\)