NEET (UG) entrance exam Question Bank Solutions

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 ______.

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

Shape selective catalysis is a reaction catalysed by ______.

Purification of crude metals by removing metallic and non-metallic impurities is known as ______ of metals.

Which of the following species has bond angle less than 98°?

For a reversible reaction, if the concentrations of the reactants are doubled, then the equilibrium constant value ______.

Heavy water is used in atomic reactor as

Arrange the following alkyl halides in decreasing order of the rate of ~ elimination reaction with alcoholic KOH:

1. \[\begin{array}{cc}
   \ce{H}\phantom{...}\\
   |\phantom{...}\\
   \phantom{}\ce{CH3 - C - CH2Br}\\
   |\phantom{...}\\
   \ce{CH3}\phantom{}
   \end{array}\]
2. CH₃ – CH₂ – Br
3. CH₃ – CH₂ – CH₂ – Br

What is the oxidation number of Fe in Fe(CO)₅?

Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?