List of top Chemistry Questions asked in NEET (UG)

Which one of the following polymers is prepared by addition polymerization

The major product formed in dehydrohalogenation reaction of $2-Bromo$ pentane is $Pent-2-ene$. This product formation is based on ?

Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is

From the following pairs of ions which one is not an iso-electronic pair?

BF3 is planar and electron-deficient compound. Hybridization and the number of electrons around the central atom, respectively are

For irreversible expansion of an ideal gas under isothermal condition, the correct option is

An organic compound contains 78% (by wt.) carbon and the remaining percentage of hydrogen. The right option for the empirical formula of this compound is : [Atomic wt. of C is 12, H is 1]

Choose the correct option for the total pressure (in atm.) in a mixture of 4 g O2 and 2 g H2 confined in a total volume of one litre at 08C is : [Given R=0.082 L atm mol−1K−1, T=273 K]

The dihedral angle of the least stable conformer of ethane is

Identify the compound that will react with Hinsberg’s reagent to give a solid which dissolves in alkali

The following solutions were prepared by dissolving 10 g of glucose (C6H12O6 ) in 250 ml of water (P1), 10 g of urea (CH4N2O) in 250 ml of water (P2 ) and 10 g of sucrose (C12H22O11) in 250 ml of water (P3). The right option for the decreasing order of osmotic pressure of these solutions is

Match List - I with List - II.

List - I

List - II

(a)[Fe(CN)6]3−(i)5.92 BM
(b)[Fe(H2O)6]3+(ii)0 BM
(c)[Fe(CN)6]4−(iii)4.90 BM
(d)[Fe(H2O)6]2+(iv)1.73 BM

Choose the correct answer from the options given below.

The molar conductivity of 0.007 M acetic acid is 20 S cm2 mol−1. What is the dissociation constant of acetic acid? Choose the correct option. 

The slope of Arrhenius Plot (ln k v/s \(\frac{1}{T}\)) of first order reaction is −5×103 K. The value of Ea of the reaction is. Choose the correct option for your answer. [Given R=8.314 JK−1mol−1 ]

The correct sequence of bond enthalpy of ‘C–X’ bond is

In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it

Ethylene diaminetetraacetate (EDTA) ion is

Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?
For a reaction A\(\rightarrow\)B, the enthalpy of the reaction is −4.2 kJ mol−1 and the enthalpy of activation is 9.6 kJ mol−1. The correct potential energy profile for the reaction is shown in option
Given below are two statements : 
Statement I: Aspirin and Paracetamol belong to the class of narcotic analgesics. 
Statement II: Morphine and Heroin are non-narcotic analgesics. 
In the light of the above statements, choose the correct answer from the options given below
The correct option for the number of body centred unit cells in all 14 types of Bravais lattice unit cells is

Which of the following reactions is the metal displacement reaction? Choose the right option.

Zr (Z=40) and Hf (Z=72) have similar atomic and ionic radii because of

The right option for the statement “Tyndall effect is exhibited by”, is

Choose the correct option for graphical representation of Boyle’s law, which shows a graph of pressure vs. volume of a gas at different temperatures