Competishun Header

Report Issue

JEE MAIN 2023
08-04-2023 S1
Question
What is the purpose of adding gypsum to cement?
Select the correct option:
A
To facilitate the hydration of cement
B
To speed up the process of setting
C
To slow down the process of setting
D
To give a hard mass
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Sol. Factual
Question Tags
JEE Main
Chemistry
Easy
Start Preparing for JEE with Competishun
Filters 0
JEE Main
JEE Advance
Easy
Medium
Hard
Showing 18 questions
QJEE Main 20262026
The sum of all values of $\alpha$, for which the shortest distance between the lines $\frac{x+1}{\alpha}=\frac{y-2}{-1}=\frac{z-4}{-\alpha}$ and $\frac{x}{\alpha}=\frac{y-1}{2}=\frac{z-1}{2 \alpha}$ is...
JEE MainMathematicsEasy
View Solution
QJEE Main 20262026
The largest value of $n$, for which $40^n$ divides 60 I , is
JEE AdvanceMathematicsEasy
View Solution
QJEE Main 20262026
The letters of the word "UDAYPUR" are written in all possible ways with or without meaning and these words are...
JEE AdvanceMathematicsEasy
View Solution
QJEE Main 20262026
$\left(\frac{1}{3}+\frac{4}{7}\right)+\left(\frac{1}{3^2}+\frac{1}{3} \times \frac{4}{7}+\frac{4^2}{7^2}\right)+\left(\frac{1}{3^3}+\frac{1}{3^2} \times \frac{4}{7}+\frac{1}{3} \times \frac{4^2}{7^2}+\frac{4^3}{7^3}\right)+\ldots$ upto infinite terms, is equal to
JEE AdvanceMathematicsEasy
View Solution
QJEE Main 20262026
Let $P=\left[p_{i j}\right]$ and $Q=\left[q_{i j}\right]$ be two square matrices of order 3 such that $q_{\mathrm{ij}}=2^{(\mathrm{i}+\mathrm{j}-1)} \mathrm{p}_{\mathrm{ij}}$ and $\operatorname{det}(Q)=2^{10}$. Then...
JEE AdvanceMathematicsEasy
View Solution
QJEE Main 20262026
Let the image of parabola $x^2=4 y$, in the line $x-y=1$ be $(y+a)^2=b(x-c), a, b, c \in \mathrm{~N}$. Then $a+b+c$...
JEE MainMathematicsEasy
View Solution
QJEE Main 20262026
Let $a_1, a_2, a_3, a_4$ be an A.P. of four terms such that each term of the A.P. and its...
JEE MainMathematicsEasy
View Solution
QJEE Main 20262026
Let $\vec{a}=2 \hat{\mathrm{i}}-\hat{\mathrm{j}}-\hat{\mathrm{k}}, \vec{b}=\hat{\mathrm{i}}+3 \hat{\mathrm{j}}-\hat{\mathrm{k}}$ and $\vec{c}=2 \hat{\mathrm{i}}+\hat{\mathrm{j}}+3 \hat{\mathrm{k}}$. Let $\vec{v}$ be the vector in the plane of the vectors...
JEE MainMathematicsEasy
View Solution
QJEE Main 20262026
Let the angles made with the positive $x$-axis by two straight lines drawn from the point $\mathrm{P}(2,3)$ and meeting the...
JEE MainMathematicsEasy
View Solution
QJEE Main 20262026
Let the length of the latus rectum of an ellipse $\frac{x^2}{a^2}+\frac{y^2}{b^2}=1,(a>b)$, be 30 . If its eccentricity is the maximum...
JEE MainMathematicsEasy
View Solution
QJEE Main 20262026
Let $f(x)=\int \frac{7 x^{10}+9 x^8}{\left(1+x^2+2 x^9\right)^2} d x, x>0, \lim _{x \rightarrow 0} f(x)=0$ and $f(1)=\frac{1}{4}$.
If $...
JEE MainMathematicsMedium
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
QJEE ADVANCE 2006 2006
For the reaction, $2 \mathrm{CO}+\mathrm{O}_2 \longrightarrow 2 \mathrm{CO}_2 ; \Delta \mathrm{H}=-560 \mathrm{~kJ}$. Two moles of CO and one mole of...
JEE AdvanceChemistryEasy
View Solution