List of top Chemistry Questions asked in NEET (UG)

Consider the reaction ${ CH3CH2CH2Br + NaCN -> CH3CH2CH2CN + NaBr } $ This reaction will be the fastest in
Consider the nitration of benzene using mixed conc. $ {H_2SO_4}$ and ${HNO_3}$. If a large amount of ${KHSO_4}$ is added to the mixture, the rate of nitration will be :
Among the following, which one is a wrong statement?
Among the following the correct order of acidity is :
At $100^{\circ} C$ the vapour pressure of a solution of $6.5 \,g$ of a solute in $100 \,g$ water is $732\, mm$. If $K_b = 0.52$, the boiling point of this solution will be:
The correct statement regarding the basicity of arylamines is:
Predict the correct order among the following:
The addition of a catalyst during a chemical reaction alters which of the following quantities ?
Fog is a colloidal solution of
Which of the following is an analgesic ?
Which is the correct statement for the given acids ?
Nitrogen dioxide and sulphur have some properties in common. Which property is shown by one of these compounds, but not by the other?
The hybridization involved in complex $ {[Ni(CN)4]^{2-}}$ is (At.No. Ni = 28)
In which of the following pairs, both the species are not isostructural ?
The number of water molecules is maximum in :
Decreasing order of stability of $O_2, O^-_2, O_2^+ $ and ${ O_2^{2-}}$ is :
Solubility of the alkaline earth?? metal sulphates in water decreases in the sequence :
Cobalt (III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at $25^{\circ } C$?
Magnetic moment 2.84 B.M. is given by (At. nos, Ni=28, Ti=22, Cr=24, Co=27)
$20.0 \,g$ of a magnesium carbonate sample decomposes on heating to give carbon dioxide and $8.0 \,g$ magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample ?
The variation of the boiling points of the hydrogen halides is in the order $HF > HI > HBr > HCl$. What explains the higher boiling point of hydrogen fluoride ?

The vacant space in bcc lattice unit cell is:

Which of the statements given below is incorrect ?
On heating which of the following releases ${CO_2}$ most easily ?
Reaction of carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is :