NEET (UG) entrance exam Question Bank Solutions for Chemistry

Choose the INCORRECT statement from the following.

Some of the polar crystals when heated produces small electrical current. This phenomenon is called ______.

If the atomic mass unit ‘u’ were defined to be `1/5 "th"` of the mass of an atom of C-12, what would be the atomic weight of nitrogen in amu or ‘u’ in this state? Atomic weight of N on the conventional scale is 14.

Write the IUPAC name of the following compound.

During preparation of ice-cream gelatin is added in ice-creams. What could be the role of gelatin in the process?

Which of the following statements are correct?

1. The hybridisation found in cation of solid PCl5 is sp³.
2. In AB₂L₂ type, the BAB bond angle is always greater than the normal tetrahedral bond angle.
3. In \[\ce{ClO^{-}_3}\] NH₃ and XeO₃, the hybridisation and the number of lone pairs on the central atoms are same.
4. In· discrete P₄ molecule, there are six P—P bonds and four lone pairs of electrons.

For the irreversible expansion of an ideal gas under isothermal conditions, the correct option is ______.

The modem atomic mass scale is based on ______.

Isopropyl methyl ether when treated with hydrogen iodide gives ______.

In which of the following molecule does the central atom have two p-orbitals unused?

Which of the following is NOT correct?

An organic compound 'X' (molecular formula C₆H₇O₂N) has six carbons in a ring system, two double bonds and also a nitro group as a substituent, 'X' is ______. 

The total number of orbitals in a shell with the principal quantum number n is ______.

The number ratio of σ and π bonds in benzene is ______. 

The following is a method to determine the surface tension of liquids:

For the reaction, \[\ce{X2O_{4(l)} -> 2XO_{2(g)}}\] ΔU = 2.1 kcal, ΔS = 20 cal K^–1 at 300 K Hence: ΔG is:

Mark the incorrect statement from the following:

A mixture of benzaldehyde and formaldehyde on heating with 50% NaOH solution gives

Diethyl ether finds use in medicine as ______.

The second law of thermodynamics states that ______.