Competishun Header
Competishun
Contact Us
Back

Report Issue

JEE MAIN 2019
09-04-2019 S2
Question
10 mL of 1 mM surfactant solution forms a monolayer covering $0.24 \mathrm{~cm}^2$ on a polar substrate. If the polar head is approximated as a cube, what is its edge length?
Select the correct option:
A
2.0 pm
B
2.0 nm
C
0.1 nm
D
1.0 pm
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Question Tags
JEE Main
Chemistry
Easy
Start Preparing for JEE with Competishun
YouTube
Books
App
Tests
Filters 0
JEE Main
JEE Advance
Easy
Medium
Hard
Showing 18 questions
QJEE Main 20242024
A series LCR circuit is subjected to an AC signal of $200 \mathrm{~V}, 50 \mathrm{~Hz}$. If the voltage across the...
JEE MainPhysicsEasy
View Solution→
QJEE Main 20242024
A man carrying a monkey on his shoulder does cycling smoothly on a circular track of radius 9 m and...
JEE MainPhysicsEasy
View Solution→
QJEE Main 20242024
The electrostatic force $\left(\overrightarrow{\mathrm{F}}_1\right)$ and magnetic force ( $\overrightarrow{\mathrm{F}}_2$ ) acting on a charge q moving with velocity v can...
JEE MainPhysicsEasy
View Solution→
QJEE Main 20242024
A particle moves in $x-y$ plane under the influence of a force $\vec{F}$ such that its linear momentum is $...
JEE MainPhysicsEasy
View Solution→
QJEE Main 20242024
If n is the number density and d is the diameter of the molecule, then the average distance covered by...
JEE MainPhysicsEasy
View Solution→
QJEE Main 20242024
The vehicles carrying inflammable fluids usually have metallic chains touching the ground :
JEE MainPhysicsEasy
View Solution→
QJEE Main 20242024
A galvanometer of resistance $100 \Omega$ when connected in series with $400 \Omega$ measures a voltage of upto 10 V...
JEE MainPhysicsEasy
View Solution→
QJEE Main 20242024
The angular momentum of an electron in a hydrogen atom is proportional to : (Where r is the radius of...
JEE MainPhysicsEasy
View Solution→
QJEE Main 20242024
Which of the following statement is not true about stopping potential $\left(\mathrm{V}_0\right)$ ?
JEE MainPhysicsEasy
View Solution→
QJEE Main 20242024
Given below are two statements :
Statement I : When the white light passed through a prism, the red...
JEE MainPhysicsEasy
View Solution→
QJEE Main 20242024
Consider the matrices : $\mathrm{A}=\left[\begin{array}{rr}2 & -5 \\ 3 & \mathrm{~m}\end{array}\right], \mathrm{B}=\left[\begin{array}{c}20 \\ \mathrm{~m}\end{array}\right]$ and $X=\left[\begin{array}{l}x \\ y\end{array}\right]$. Let the...
JEE MainPhysicsEasy
View Solution→
QJEE Main 20242024
Let the inverse trigonometric functions take principal values. The number of real solutions of the equation $...
JEE MainMathematicsEasy
View Solution→
QJEE Main 20242024
If $\left(\frac{1}{\alpha+1}+\frac{1}{\alpha+2}+\cdots .+\frac{1}{\alpha+1012}\right)-\left(\frac{1}{2 \cdot 1}+\frac{1}{4 \cdot 3}+\frac{1}{6 \cdot 5}+\cdots .+\frac{1}{2024 \cdot 2023}\right)=\frac{1}{2024}$, then $\alpha$ is equal to-
JEE MainMathematicsEasy
View Solution→
QJEE Main 20242024
The square of the distance of the image of the point $(6,1,5)$ in the line $\frac{x-1}{3}=\frac{y}{2}=\frac{z-2}{4}$, from the origin is
JEE MainMathematicsEasy
View Solution→
QJEE Main 20242024
Let $\mathrm{A}, \mathrm{B}$ and C be three points on the parabola $y^2=6 x$ and let the line segment $A B$...
JEE MainMathematicsEasy
View Solution→
QJEE Main 20242024
Let $A=\{(x, y): 2 x+3 y=23, x, y \in N\}$ and $\mathrm{B}=\{\mathrm{x}:(\mathrm{x}, \mathrm{y}) \in \mathrm{A}\}$. Then the number of one-one...
JEE MainMathematicsEasy
View Solution→
QJEE Main 20242024
The number of integers, between 100 and 1000 having the sum of their digits equals to 14, is
JEE MainMathematicsEasy
View Solution→
QJEE Main 20242024
For a differentiable function $\mathrm{f}: I R \rightarrow I R$, suppose $f^{\prime}(\mathrm{x})=3 f(\mathrm{x})+\alpha$, where $\alpha \in \mathrm{IR}, f(0)=1$ and $...
JEE MainMathematicsEasy
View Solution→
Check this project | Best Developer Portfolio