Prepare for NEET Chemistry Classification Of Elements with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert insights into periodic table trends.
Which of the following statements regarding the solubility of inert gases in water is INCORRECT?
The solubility of inert gases increases with increasing pressure.
The solubility of inert gases increases with increasing molecular weight.
The solubility of inert gases decreases with increasing temperature.
The solubility of inert gases increases with increasing temperature.
The first ionization enthalpy of inert gases is exceptionally high. Which factor contributes LEAST to this high ionization enthalpy?
Stable completely filled electronic configuration
High effective nuclear charge
Small atomic size
Presence of d-electrons in the valence shell
Which of the following is the correct order of boiling points for , , , , and ?
PH₃ < AsH₃ < SbH₃ < BiH₃ < NH₃
NH₃ > BiH₃ > SbH₃ > AsH₃ > PH₃
NH₃ < PH₃ < AsH₃ < SbH₃ < BiH₃
BiH₃ > SbH₃ > AsH₃ > PH₃ > NH₃
The difference in bond lengths between axial and equatorial bonds in is primarily due to:
Difference in repulsions experienced by axial and equatorial bonds.
The hybridization of phosphorus.
The electronegativity difference between phosphorus and chlorine.
The involvement of d-orbitals in bonding.
Which of the following gases, when passed through an acidified solution of , changes the oxidation state of manganese from +7 to +2?
H2S
NH3
CO
SO2
The boiling point of is significantly higher than that of , despite fluorine being smaller than chlorine. What is the primary reason for this observation?
Strong hydrogen bonding in HF
Higher electronegativity of fluorine
Larger atomic size of chlorine
Lower molecular weight of HF
Which factor contributes LEAST to the inert nature of noble gases?
Full valence electron shell
High ionization energies
Low electron affinities
Relatively low boiling points
Hot, concentrated sulfuric acid exhibits oxidizing properties. Which of the following observations would NOT be expected when hot, concentrated reacts with a suitable reactant?
Production of sulfur dioxide gas
Production of hydrogen sulfide gas
Production of solid sulfur
Production of oxygen gas
Which of the following is incorrect
All prime numbers are odd numbers
1 is a prime number
Prime numbers greater than 5 end in 1, 3, 7, or 9
The sum of two prime numbers is always even
Select the incorrect statement regarding among the following
It reacts with water to form .
It is commonly known as phosphorus pentoxide.
It has a cage-like structure.
It is prepared by burning phosphorus in excess of oxygen.
