List of top Chemistry Questions asked in NEET (UG)

Regarding cross-linked or network polymers, which of the following statements is incorrect ?
Nitration of aniline in strong acidic medium also gives m-nitroaniline because
In the structure of ClF3 , the number of lone pairs of electrons on central atom ‘Cl’ is
On which of the following properties does the coagulating power of an ion depend ?
The correct order of atomic radii in group 13 elements is
Considering Ellingham diagram, which of the following metals can be used to reduce alumina ?
The solubility of BaSO4 in water is 2·42 × 10-3 gL-1 at 298K. The value of its solubility product (Ksp) will be (Given molar mass of BaSO4 = 233 g mol-1)
Given van der Waals constant for NH3, H2, O2 and CO2 are respectively 4.17, 0.244, 1.36 and 3.59, which one of the following gases is most easily liquefied ?
In the reaction ..... the electrophile involved is
Iron carbonyl, $Fe(CO)_5$ is
The type of isomerism shown by the complex $[CoCl_2(en)_2]$ is
Which of the following oxides is most acidic in nature ?
Magnesium reacts with an element $(X)$ to form an ionic compound. If the ground state electronic configuration of $( X )$ is $1 s ^{2} 2 s ^{2} 2 p ^{3}$, the simplest formula for this compound is
Which of the following carbocations is expected to be most stable ?
Which of the following molecules represents the order of hybridisation $sp^2 , sp^2, sp, sp$ from left to right atoms ?
Which of the following is correct with respect to $- I$ effect of the substituents ? $(R =$ alkyl $)$
The compound $C_7H_8$ undergoes the following reactions: $ { C_7H_8 ->[3 \, Cl_2 / \Delta] A ->[Br_2 /Fe] B ->[Zn / HCl ] C }$ The product ??$C$ ' is
The compound $A$ on treatment with $Na$ gives $B$ , and with $PCl_5$ gives $C. B$ and $C$ react together to give diethyl ether. $A, B$ and $C$ are in the order
The solubility of $BaSO _{4}$ in water is $2.42 \times 10^{-3}\, gL ^{-1}$ at $298 \,K$. The value of its solubility product $\left( K _{ sp }\right)$ will be (Given molar mass of $BaSO _{4}=233 \,g\, mol ^{-1}$ )
Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code :
Column I Column II
a. $Co^{3+}$ i. $\sqrt{8} B.M$
b. $Cr^{3+}$ 11. $\sqrt{35} B.M$
c. $Fe^{3+}$ iii. $\sqrt{3} B.M$
d $Ni^{2+}$ iv $\sqrt{24} B.M$
v $\sqrt{15} B.M$
Which one of the following ions exhibits $d-d$ transition and paramagnetism as well ?
Given van der Waals constant for $NH _{3}, H _{2}, O _{2}$ and $CO _{2}$ are respectively $4.17, 0.244, 1.36$ and $3.59$, which one of the following gases is most easily liquefied?
Consider the change in oxidation state of Bromine corresponding to different emf values as shown in the diagram below : is Then the species undergoing disproportionation is
The geometry and magnetic behaviour of the complex $[Ni(CO)_4]$ are
Which of the following statements is not true for halogens?