MHT CET · Chemistry · s Block Elements

Which from following elements form superoxide with air?

A Li
B Na
C K
D Mg

Verified Solution

Answer & Solution

Correct Answer

(C) K

Step-by-step Solution

Detailed explanation

No Solution

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

In $\mathrm{PCl}_{5}$ molecule, the angle Cl-P-Cl present in a plane is equal to

MHT CET 2020 Medium
Which amino acid from following is NOT synthesized in our body?

MHT CET 2025 Easy
Which of the following amines on heating with chloroform generate foul smelling product?

MHT CET 2023 Easy
The maximum number of unpaired electrons is present in

MHT CET 2009 Easy
Rate law for a reaction is $\mathrm{r}=\mathrm{k}[\mathrm{A}]^2[\mathrm{~B}]$. If rate constant is $6.25 \mathrm{~mol}^{-2} \mathrm{dm}^6 \mathrm{~s}^{-1}$, what is the rate of reaction when $[\mathrm{A}]=1 \mathrm{~mol} \mathrm{dm}^{-3}$ and $[\mathrm{B}]=0.2 \mathrm{~mol} \mathrm{dm}^{-3}$ ?

MHT CET 2024 Medium
The mass of an atom present in unit cell is $4.4 \times 10^{-23} \mathrm{~g}$ and the product of density and volume of unit cell is $1.792 \times 10^{-22} \mathrm{~g}$. What is the type of cubic unit cell?

MHT CET 2025 Medium

Explore more questions on app

From MHT CET

The radius of hydrogen a tomin its ground state is $5.3 \times 10^{-11} \mathrm{~m}$. After collision with an electron
it is found to have a radius of $21.2 \times 10^{-11} \mathrm{~m}$.
What is the prindpal quantum number $n$ of the final state of atom?

MHT CET 2009 Medium
When a metal surface is illuminated by light of wavelength $\lambda_1$ and $\lambda_2$, the maximum velocities of photoelectrons ejected are V and 2 V respectively. The work function of the metal is ( $h=$ Planck's constant, $c=$ velocity of light, $\left.\lambda_1>\lambda_2\right)$

MHT CET 2025 Medium
If p, q, r, s are statements, where, $p: A^2-B^2=(A-B)(A+B) ; A, B$ are matrices, $A B \neq B A$
q: $5 \leqslant 5$
r: ${ }^8 \mathrm{C}_1+{ }^8 \mathrm{C}_2+{ }^8 \mathrm{C}_3+\ldots \ldots \ldots . .+{ }^8 \mathrm{C}_8=256$
s: Maximum value of ${ }^8 \mathrm{C}_{\mathrm{r}}$ is 70 then the statement from the following having truth value true is ....

MHT CET 2025 Medium
Identify the element from following such that the last electron is placed in ( $\mathrm{n}-1$ ) d orbital.

MHT CET 2025 Medium
$\int \frac{\sec^{8} x}{cosec x} d x =$

MHT CET 2017 Easy
Given below are two statements
Statement - I: Acetyl CoA formation takes place by oxidative decarboxylation of pyruvic acid.
Statement - II: $\beta$- oxidation of fatty acid produces acetyl CoA.
In the light of above statements, choose the most appropriate answer from the options given below.

MHT CET 2022 Hard

Explore more questions on app