NEET 2017

The equilibrium constants of the following are
N2 + 3H2 \(\rightleftharpoons\) 2NH3;     K1
N2 + O2 \(\rightleftharpoons\) 2NO;     K2
H2 + \({1 \over 2}\)O2 \(\rightleftharpoons\)
H2O;     K3
The equilibrium constant (K) of the rea...

A first order reaction has a specific reaction rate of 10\(-\)2 sec\(-\)1. How much time will it take for 20 g of the reactant to reduce to 5 g?

Mechanism of a hypothetical reaction
X2 + Y2 \(\to\) 2XY, is given below :
(i)   X2 \(\to\) X + X (fast)
(ii)  X + Y2 \(\rightleftharpoons\) XY + Y (slow)
(iii) X + Y \(\to\) XY (fast)
The overall order of the reaction will be

Mixture of chloroxylenol and terpineol acts as

An example of a sigma bonded organometallic compound is

Correct increasing order for the wavelengths of absorption in the visible region for the complexes of Co3+ is

The correct order of the stoichiometries of AgCl formed when AgNO3 in excess is treated with the complexes : CoCl3.6NH3, CoCl3.5NH3, CoCl3.4NH3 respectively is

Pick out the correct statement with respect to [Mn(CN)6]3\(-\).

Name the gas that can readily decolourise acidified KMnO4 solution.

HgCl2 and I2 both when dissolved in water containing I\(-\) ions, the pair of species formed is

The reason for greater range of oxidation states in actinoids is attributed to

In the electrochemical cell :
\(Zn\left| {ZnS{O_4}\left( {0.01\,M} \right)} \right|\)\(\left| {CuS{O_4}\left( {1.0M} \right)} \right|Cu,\)
the emf of this Daniell cell is E1. When the concentration of ZnSO4 is changed to 1.0 M and that of C...

Which of the following is a sink for CO?

Identify \(A\) and predict the type of reaction.

Predict the correct intermediate and product in the following reaction :
$${H_3}C - C \equiv CH\mathrel{\mathop{\kern0pt\longrightarrow}
\limits_{HgS{O_4}}^{{H_2}O,{H_2}S{O_4}}} \mathop {Intermediate}\limits_{(A)} \to \mathop {\Pr oduct}\l...

With respect to the conformers of ethane, which of the following statements is true?

Which one is the correct order of acidity?

Concentration of the Ag+ ions in a saturated solution of Ag2C2O4 is 2.2 \(\times\) 10\(-\)4 mol L\(-\)1. Solubility product of Ag2C2O4 is

Which of the following reactions is appropriate for converting acetamide to methanamine?

The correct increasing order of basic strength for the following compounds is

Match the interhalogen compounds of column-I with the geometry in column-II and assign the correct code.

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In which pair of ions both the species contain S \(-\) S bond?

It is because of inability of ns2 electrons of the valence shell to participate in bonding that

The element Z = 114 has been discovered recently. It will belong to which of the following family/group and electronic configuration ?

Extraction of gold and silver involves leaching with CN\(-\) ion. Silver is later recovered by

Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field?

Which is the incorrect statement?

If molality of the dilute solution is doubled, the value of molal depression constant (Kf) will be

Which of the following is dependent on temperature?

The IUPAC name of the compound

The most suitable method of separation of 1 : 1 mixture of ortho and para-nitrophenols is

The correct statement regarding electrophile is

Which one is the wrong statement ?

Which one of the following statements is not correct?

For a given reaction, \(\Delta\)H = 35.5 kJ mol\(-\)1 and \(\Delta\)S = 83.6 J K\(-\)1 mol\(-\)1. The reaction is spontaneous at (Assume that \(\Delta\)H and \(\Delta\)S do not vary with temperature.)

A gas is allowed to expand in a well insulated container against a constant external pressure of 2.5 atm from an initial volume of 2.50 L to a final volume of 4.50 L. The change in internal energy \(\Delta\)U of the gas in joules will be

Figure shows a circuit that contains three identical resistors with resistance R = 9.0 \(\Omega\) each, two identical inductors with inductance \(L\) = 2.0 mH each, and an ideal battery with emf \(\varepsilon = 18V\). The current \(i\) th...

Radioactive material 'A' has decay constant '8 \(\lambda\)' and material 'B' has decay constant '\(\lambda\)'. Initially they have same number of nuclei. After what time, the ratio of number of nuclei of material 'B' to that 'A' will be e...

The ratio of wavelengths of the last line of Balmer series and the last line of Lyman series is

A capacitor is charged by a battery. The battery is removed and another identical unchanged capacitor is connected in parallel. The total electrostatic energy of resulting system

Which of the following statements are correct ?
(1)   Centre of mass of a body always coincides with the centre of gravity of the body.
(2)   Centre of mass of a body is the point at which the total gravitational torque on the body is zero...

The resistance of a wire is 'R' ohm. If it is melted and stretched to 'n' times its original length. its new resistance will be

A potentiometer is an accurate and versatile device to make electrical measurements of EMF because the method involves

The photoelectric threshold wavelength of silver is 3250 \(\times\) 10\(-\)10 m. The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength 2536 \(\times\) 10\(-\)10 m is
{Given h = 4.14 \(\times\) ...

The de-Broglie wavelength of a neutron in thermal equilibrium with heavy water at a temperature T (kelvin) and mass m, is

A long solenoid of diameter 0.1 m has 2 \(\times\) 104 turns per meter. At the centre of the solenoid, a coil of 100 turns and radius 0.01 m is placed with its axis coinciding with the solenoid axis. The current in the solenoid reduces at...

In an electromagnetic wave in free space that root mean square value of the electric field is Erms = 6 V m\(-\)1. The peak value of the magnetic field is

Suppose the charge of a proton and an electron differ slightly. One of them is \(-\)e, the other is (e + \(\Delta\)e). If the net of electrostatic force and gravitational force between two hydrogen atoms placed at a distance d (musch great...

The diagrams below show regions of equipotentials.

A positive charge is moved from A to B in each diagram.

A beam of light from a source L is incident normally on a plane mirror fixed at a certain distance x from the source. The beam is reflected back as a spot on a scale placed just above the source L. When the mirror is rotated through a small...