Given below are two... | Ionic Equilibrium JEE Main 2022

Competishun Header

JEE MAIN 2022

26-07-2022 S2

Question

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A :Phenolphthalein is a pH dependent indicator, remains colourless in acidic solution and gives pink colour in basic medium Reason R : Phenolphthalein is a weak acid. It doesn’t dissociate in basic medium. In the light of the above statements, choose the most appropriate answer from the options given below :

Select the correct option:

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true but R is NOT the correct explanation of A.

C

A is true but R is false

D

A is false but R is true

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Chemistry

Easy

Start Preparing for JEE with Competishun

Filters 0

Showing 18 questions

QJEE Main 20242024

Let the point $(-1, \alpha, \beta)$ lie on the line of the shortest distance between the lines $\frac{x+2}{-3}=\frac{y-2}{4}=\frac{z-5}{2}$ and $\frac{x+2}{-1}=\frac{y+6}{2}=\frac{z-1}{0}$....

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

The number of solutions of $\sin ^2 x+\left(2+2 x-x^2\right) \sin x-3(x-1)^2=0$, where $-\pi \leq \mathrm{x} \leq \pi$, is $\_\_\_\_$ .

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

Let $y=y(x)$ be the solution of the differential equation $\frac{d y}{d x}+\frac{2 x}{\left(1+x^2\right)^2} y=x e^{\frac{1}{\left(1+x^2\right)}} ; y(0)=0$. Then the area...

JEE MainChemistryEasy

View Solution→

QJEE Main 20242024

If $y(\theta)=\frac{2 \cos \theta+\cos 2 \theta}{\cos 3 \theta+4 \cos 2 \theta+5 \cos \theta+2}$, then at $\theta=\frac{\pi}{2}, y^{\prime \prime}+y^{\prime}+y$ is equal...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

Let $\alpha \beta \neq 0$ and $...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

Let $\beta(m, n)=\int_0^1 x^{m-1}(1-x)^{n-1} d x, m, n>0$. If $\int_0^1\left(1-x^{10}\right)^{20} d x=a \times \beta(b, c)$, then $100(a+b+x)$ equals

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

Let ABCD and AEFG be squares of side 4 and 2 units, respectively. The point E is on the line...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

The coefficients $a, b, c$ in the quadratic equation $a x^2+b x+c=0$ are from the set $\{1,2,3,4,5,6\}$. If the probability...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

The values of $m, n$, for which the system of equations
$...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

Let the set $S=\{2,4,8,16, \ldots, 512\}$ be partitioned into 3 sets $\mathrm{A}, \mathrm{B}, \mathrm{C}$ with equal number of elements such...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

Let the circle $C_1: x^2+y^2-2(x+y)+1=0$ and $C_2$ be a circle having centre at $(-1,0)$ and radius 2 . If the...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

Let $f, \mathrm{~g}: \mathrm{R} \rightarrow \mathrm{R}$ be defined as : $f(\mathrm{x})=|\mathrm{x}-1|$ and $...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

If the constant term in the expansion of $\left(\frac{\sqrt[5]{3}}{x}+\frac{2 x}{\sqrt[3]{5}}\right)^{12}, x \neq 0$, is $\alpha \times 2^8 \times \sqrt[5]{3}$, then...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

Let $(\alpha, \beta, \gamma)$ be the point $(8,5,7)$ in the line $\frac{x-1}{2}=\frac{y+1}{3}=\frac{z-2}{5}$. Then $\alpha+\beta+\gamma$ is equal to

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

Let $\mathrm{A}(-1,1)$ and $\mathrm{B}(2,3)$ be two points and P be a variable point above the line $A B$ such that...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

Consider three vectors $\vec{a}, \vec{b}, \vec{c}$. Let $|\vec{a}|=2,|\vec{b}|=3$ and $\overrightarrow{\mathrm{a}}=\overrightarrow{\mathrm{b}} \times \overrightarrow{\mathrm{c}}$. If $\alpha \in\left[0, \frac{\pi}{3}\right]$ is the angle between...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

Let $\vec{a}=2 \hat{\imath}+5 \hat{\jmath}-\hat{k}, \vec{b}=2 \hat{\imath}-2 \hat{\jmath}+2 \hat{k}$ and $\overrightarrow{\mathrm{c}}$ be three vectors such that $(\vec{c}+\hat{\imath}) \times(\vec{a}+\vec{b}+\hat{\imath})=\vec{a} \times(\vec{c}+\hat{\imath})$. $...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

60 words can be made using all the letters of the word BHBJO, with or without meaning. If these words...

JEE MainMathematicsEasy

View Solution→