NEET (UG) entrance exam Question Bank Solutions

In Hall's process, the main reagent is mixed with ______.

The wavelength of light absorbed by [Cu(H₂O)₄]²⁺ is 600 nm. The crystal field splitting energy is ______

The enthalpy of formation of CH_4(g), HP_(cl) and CO_2(g) are respectively – 74.8 kJ mol^–1, – 285.5 kJ mol^–1 and – 393.5 kJ mol^–1. Then, the standard enthalpy of combustion of CH_4(g) is:

For the reaction,

\[\ce{N2 + O2(g) ⇌ 2NO(g)}\]

the equilibrium constant is K₁. The equilibrium constant is K₂ for the reaction

\[\ce{2NO(g) + O2(g) ⇌ 2NO2(g)}\]

What is "K" for the reaction:

\[\ce{NO2(g) ⇌ 1/2 N2(g) + O2(g)}\]?

Temporary hardness of water can be removed by

Paper chromatography is ______.

In vulcanization of rubber:

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

Ethylene diamine tetraacetate (EDTA) ion is ______.

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

Chlorobenzene is ______ towards nucleophilic substitution reactions. 

Which of the following is TRUE about gaseous state?

The polysaccharide used in the manufacture of paper is ______.

Which of the following is used as a scouring agent in soap powders?

What is heavy water? 

A mixture of glucose and fructose can be easily separated by ______. 

In a close-packed body-centred cubic lattice of potassium, the CORRECT relation between the atomic radius (r) of potassium and the edge-length (a) of the cube is ______

Which of the following is a colligative property?

Which alcohol can be converted most easily to alkenes?  

The activation energy in a chemical reaction is defined as ______.