List of top Questions asked in NEET (UG)- 2006

Biradial symmetry and lack of cnidoblasts are the characteristics of:

An enzyme that can stimulate germination of barley seeds is:

In which of the following fruits is the edible part the aril?

Withdrawal of which of the following hormones is the immediate cause of menstruation?

Crop plants grown in monoculture are:

The electronegativity difference between N and F is greater than that between N and H yet the dipole moment of NH₃ (1.5 D) is larger than that of NF₃ (0.2 D). This is because:

In which of the following molecules are all the bonds not equal?

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)

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 :

A hypothetical electrochemical cell is shown below 
\(A|A+ (xM)|| B+ (yM)| B \)
The emf measured is +0.20 V. The cell reaction is:

If E°_Fe²⁺/Fe = -0.441 V and E°_{Fe³⁺/Fe²⁺} = 0.771 V, the standard emf of the reaction: Fe + 2Fe³⁺ \(→\) 3Fe²⁺ will be:

Self condensation of two moles of ethyl acetate in presence of sodium ethoxide yields:

A carbonyl compound reacts with hydrogen cyanide to form cyanohydrin which on hydrolysis forms a racemic mixture of α-hydroxy acid. The carbonyl compound is:

1.00 g of a non-electrolyte solute (molar mass 250 g mol^-1) was dissolved in 51.2 g of benzene. If the freezing point depression constant, K_f of benzene is 5.12 K kg mol^-1, the freezing point of benzene will be lowered by:

Nucleophilic addition reaction will be most favoured in:

A plot of \(log\ \frac {x}{m}\) versus \(log \ p\) for the adsorption of a gas on a solid gives a straight line with slope equal to:

The major organic product in the reaction, CH₃ – O – CH(CH₃)₂ + HI \(→\) Product is:

[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 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?

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

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-