Statement I : An alloy of | The s-Block | JEE-MAIN 2022

Competishun Header

JEE MAIN 2022

28-07-2022 S2

Question

Statement I : An alloy of lithium and magnesium is used to make aircraft plates.
Statement II : The magnesium ions are important for cell–membrane integrity.
In the light the above statements, choose the correct answer from the options given below

Select the correct option:

A

Both Statement I and Statement II are true

B

Both Statement I and Statement II are false

C

Statement I is true but Statement II is false

D

Statement I is false but Statement II is true

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Alloy of Li and Mg is used to make armour plates and not aircraft plates.
Calcium plays important roles in neuromuscular function, interneuronal transmission and cell membrane integrity

Question Tags

JEE Main

Chemistry

Easy

Start Preparing for JEE with Competishun

Filters 0

Showing 18 questions

QJEE Main 20262026

The number of elements in the set $\left\{x \in\left[0,180^{\circ}\right]: \tan \left(x+100^{\circ}\right)=\tan \left(x+50^{\circ}\right) \tan x \tan \left(x-50^{\circ}\right)\right\}$ is $\_\_\_\_$ .

JEE MainMathematicsMedium

View Solution→

QJEE Main 20262026

Let S be a set of 5 elements and $\mathrm{P}(\mathrm{S})$ denote the power set of S . Let E be...

JEE MainMathematicsHard

View Solution→

QJEE Main 20242024

Let z=(1+i)(1+2i)(1+3i)...(1+n i), where $i=\sqrt{-1}$. If $|z|^2=44200$, then $n$ is equal to

JEE MainMathematicsEasy

View Solution→

QJEE Main 20262026

Let $(h, k)$ lie on the circle $\mathrm{C}: x^2+y^2=4$ and the point $(2 h+1,3 k+2)$ lie on an ellipse with...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

If $f(x)$ satisfies the relation $f(x)=e^x+\int_0^1\left(y+x e^x\right) f(y) d y$, then $e+f(0)$ is equal to $\_\_\_\_$ .

JEE AdvanceMathematicsMedium

View Solution→

QJEE Main 20262026

Let [t] denote the greatest integer less than or equal to t. If the function
$...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20262026

Let $\vec{a}=2 \hat{\mathrm{i}}-5 \hat{\mathrm{j}}+5 \hat{\mathrm{k}}$ and $\vec{b}=\hat{\mathrm{i}}-\hat{\mathrm{j}}+3 \hat{\mathrm{k}}$. If $\vec{c}$ is a vector such that $2(\vec{a} \times \vec{c})+3(\vec{b} \times \vec{c})=\overrightarrow{0}$...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20262026

The smallest positive integral value of $a$, for which all the roots of $x^4-a x^2+9=0$ are real and distinct, is...

JEE MainMathematicsMedium

View Solution→

QJEE Main 20262026

Let $f$ be a function such that $3 f(x)+2 f\left(\frac{m}{19 x}\right)=5 x, x \neq 0$, where $m=\sum_{i=1}^9(i)^2$. Then $f(5)-f(2)$ is...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20262026

Let $y=y(x)$ be a differentiable function in the interval $(0, \infty)$ such that $y(1)=2$, and $...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20262026

Consider the following three statements for the function $f:(0, \infty) \rightarrow \mathbb{R}$ defined by $f(x)=\left|\log _e x\right|-|x-1|$ :
(I)...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20262026

If the domain of the function $f(x)=\sin ^{-1}\left(\frac{1}{x^2-2 x-2}\right)$, is $(-\infty, \alpha] \cup[\beta, \gamma] \cup[\delta, \infty)$, then $\alpha+\beta+\gamma+\delta$ is equal...

JEE AdvanceMathematicsEasy

View Solution→

QJEE ADVANCE 20062006

Match the following:

JEE AdvanceChemistryEasy

View Solution→

QJEE ADVANCE 20062006

According to Bohr's theory, $\mathrm{E}_{\mathrm{n}}=$ Total energy $\mathrm{K}_{\mathrm{n}}=$ Kinetic energy $\mathrm{V}_{\mathrm{n}}=$ Potential energy $\mathrm{r}_{\mathrm{n}}=$ Radius of $\mathrm{n}^{\text {th }}$ orbit...

JEE AdvanceChemistryEasy

View Solution→

QJEE ADVANCE 20062006

Match the following:

JEE AdvanceChemistryEasy

View Solution→

QJEE ADVANCE 20062006

Match the extraction processes listed in Column I with metals listed in Column II:

JEE AdvanceChemistryEasy

View Solution→

QJEE ADVANCE 20062006

The edge length of unit cell of a metal having molecular weight $75 \mathrm{~g} / \mathrm{mol}$ is $5 \AA$ which...

JEE AdvanceChemistryEasy

View Solution→

QJEE ADVANCE 20062006

We have taken a saturated solution of $\mathrm{AgBr} . \mathrm{K}_{\text {sp }}$ of AgBr is $12 \times 10^{-14}$. If $10^{-7}$...

JEE AdvanceChemistryEasy

View Solution→