List of top Questions asked in NEET (UG)

The major organic product in the reaction, CH3 – O – CH(CH3)2 + HI \(→\) Product is:
In which of the following molecules are all the bonds not equal?
[Cr(H2O)6]Cl3 (at. no. of Cr = 24) has a magnetic moment of 3.83 BM, the correct distribution of 3d electrons in the chromium of the complex is:
The general molecular formula, which represents the homologous series of alkanols is :
The enthalpy and entropy change for the reaction : Br2(l) + Cl2(g) → 2BrCl(g) are 30 kJ mol-1 and 105 JK-1 mol-1 respectively. The temperature at which the reaction will be in equilibrium is :
The enthalpy of combustion of H2, cyclohexene (C6H10) and cyclohexene (C6H12) are -241, -3800 and -3920 kJ per mol respectively. Heat of hydrogenation of cyclohexene is:
Assume each reaction is carried out in an open container. For which reaction will ∆H = ∆E?
More number of oxidation states are exhibited by the actinides than by the lanthanides. The main reason for this is:
In which of the following pairs are both the ions coloured in aqueous solution? (Atomic number: Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)
Which of the following pairs constitutes a buffer?
Two coils of self inductance 2 mH and 8 mH are placed so close together that the effective flux in one coil is completely linked with the other. The mutual inductance between these coils is
Praying mantis is a good example of -
Annual migration does not occur in the case of
A Carnot engine whose sink is at 300 K has an efficiency of 40%. By how much should the temperature of source be increased so as to increase its efficiency by 50% of original efficiency?
Angiotensinogen is a protein produced and secreted by-
Test cross involves-
Evolutionary history of an organism is known as-
A steroid hormone which regulates glucose metabolism is -
For the reaction $CH_{4}(g)+2O_2(g) {<=>}CO_2(g)+2H_2O(\ell) \Delta H_{r} =-170.8\,KJ\,mol^{-1}$ Which of the following statements is not true:
A person walked up a stalled escalator in $90\, s$ . When standing on the same escalator, now moving, he is carried up in $60\, s$. How much time would it take him to walk up the moving escalator?
A coil of inductive reactance $31\, \Omega$ has a resistance of 8 $\Omega$. It is placed in series with a condenser of capacitative reactance $25 \,\Omega$. The combination is connected to an a.c. source of 110 V. The power factor of the circuit is :-
Which one of the following orders is not in accordance with the property stated against it?
The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is :-
The correct order regarding the electronegativity of hybrid orbitals of carbon is
The 'blue baby' syndrome results from -