List of top Questions asked in NEET (UG)- 2019

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:

a-particle consists of:

Among the following, the narrow spectrum antibiotic is:

The correct order of the basic strength of methyl substituted amines in aqueous solution is:

Identify the incorrect statement related to PCI from the following:

The non-essential amino acid among the following is:

The biodegradable polymer is:

For the chemical reaction \(N_2(g)+ 3H_2(g)= 2NH_3(g)\) the correct option is :

Which of the following species is not stable ?

A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is :

The mixture that forma maximum boiling azeotrope is :

Which one is malachite from the following?

The method used to remove temporary hardness of water is : (1) (2) (3) (4)

For the cell reaction
\(2Fe^{3+}+2I^{-}_{(aq)}\rightarrow2Fe^{2+}+I_2{(aq)}\)
\(E^{\ominus}_{cell}=0.24\ V \ at \ 298 k.\)The standard Gibbs energy \((\Delta_rG^{\ominus})\) of the cell reaction is:
[Given that Faraday constant \( F=96500 \ C\ mol^{-1}]\)  

An alkene \("A"\) on reaction with \(O_3\) and \(Zn - H_2{0}\) given propanone and ethanol in equimolar ratio. Addition of \(HCI\) to alkene \("A"\) gives. \("B"\)as the major product. The structure of product \("B"\) is : 

For the second period elements the correct increasing order of first ionisation enthalpy is :

What is the correct electronic configuration of the central atom in \(K_4[Fe(CN)_6]\) based on crystal field theory?

The correct structure of tribromooctaoxide is:

Among the following, the reaction that proceeds through an electrophilic substitution, is:

The compound that is most difficult to protonate is:

\(pH\) of a saturated solution of \(Ca(OH)_2\) is \(9\). The solubility product \((K_{sp})\) of \( Ca(OH)_2\) is: 

Which of the following is an amphoteric hydroxide?

The manganate and permanganate ions are tetrahedral, due to:

Under isothermal condition, a gas at 300 K expands from 0.1 L. to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is: [Given that 1 L bar=100J]

Conjugate base for Brönsted acids \(H_2O\) and \( HF\) are