The ratio of silica to alumina in cement is:
Show Hint
The silica-to-alumina ratio determines the strength and setting time of cement.
- 5.5
- 2
- 3
- 1.5
The Correct Option is C
Solution and Explanation
• Good quality cement requires a silica to alumina ratio between 2.5 and 4.1.
• Aratio of 3 ensures optimal strength and durability, making it suitable for construction
Top Questions on Organic Chemistry - Some Basic Principles and Techniques
- Given below are two statements:
Statement I: Ozonolysis followed by treatment with Zn, H$_2$O of cis-2-butene gives ethanal.
Statement II: The product obtained by ozonolysis followed by treatment with Zn, H$_2$O of 3, 6-dimethyloct-4-ene has no chiral carbon atom.
In the light of the above statements, choose the correct answer from the options given below.- JEE Main - 2025
- Chemistry
- Organic Chemistry - Some Basic Principles and Techniques
- What are X and Y in the following reaction sequence?
2-Methylbutane $\xrightarrow{\text{KMnO}_4}$ X$\xrightarrow{\text{Y}}$ C5H11Cl- TS EAMCET - 2025
- Chemistry
- Organic Chemistry - Some Basic Principles and Techniques
- An isomer of C$_8$H$_{18}$ is X. This has five primary, one tertiary and one quaternary carbon. What is X?
- TS EAMCET - 2025
- Chemistry
- Organic Chemistry - Some Basic Principles and Techniques
- X and Y in reaction sequence:
- TS EAMCET - 2025
- Chemistry
- Organic Chemistry - Some Basic Principles and Techniques
- IUPAC names of benzene derivatives are respectively:
- TS EAMCET - 2025
- Chemistry
- Organic Chemistry - Some Basic Principles and Techniques
Questions Asked in JEE Main exam
- Let the distance between two parallel lines be 5 units and a point \( P \) lies between the lines at a unit distance from one of them. An equilateral triangle \( POR \) is formed such that \( Q \) lies on one of the parallel lines, while \( R \) lies on the other. Then \( (QR)^2 \) is equal to _____________.
- JEE Main - 2025
- Coordinate Geometry
- Preparation of potassium permanganate from MnO\(_2\) involves a two-step process in which the 1st step is a reaction with KOH and KNO\(_3\) to produce:
- JEE Main - 2025
- Preparation
Let \( a \in \mathbb{R} \) and \( A \) be a matrix of order \( 3 \times 3 \) such that \( \det(A) = -4 \) and \[ A + I = \begin{bmatrix} 1 & a & 1 \\ 2 & 1 & 0 \\ a & 1 & 2 \end{bmatrix} \] where \( I \) is the identity matrix of order \( 3 \times 3 \).
If \( \det\left( (a + 1) \cdot \text{adj}\left( (a - 1) A \right) \right) \) is \( 2^m 3^n \), \( m, n \in \{ 0, 1, 2, \dots, 20 \} \), then \( m + n \) is equal to:
- JEE Main - 2025
- Determinants
Rate law for a reaction between $A$ and $B$ is given by $\mathrm{R}=\mathrm{k}[\mathrm{A}]^{\mathrm{n}}[\mathrm{B}]^{\mathrm{m}}$. If concentration of A is doubled and concentration of B is halved from their initial value, the ratio of new rate of reaction to the initial rate of reaction $\left(\frac{\mathrm{r}_{2}}{\mathrm{r}_{1}}\right)$ is
- JEE Main - 2025
- Chemical Kinetics
- Let $ A = \left\{ \theta \in [0, 2\pi] : \Re\left( \frac{2 \cos \theta + i \sin \theta}{\cos \theta - 3i \sin \theta} \right) = 0 \right\} $. Then $ \sum_{\theta \in A} \theta^2 $ is equal to:
- JEE Main - 2025
- Trigonometric Equations
Concepts Used:
Organic Chemistry - Some Basic Principles and Techniques
Organic Chemistry is a subset of chemistry dealing with compounds of carbon. Therefore, we can say that Organic chemistry is the chemistry of carbon compounds and is 200-225 years old. Carbon forms bond with itself to form long chains of hydrocarbons, e.g.CH4, methane and CH3-CH3 ethane. Carbon has the ability to form carbon-carbon bonds quite elaborately. Polymers like polyethylene is a linear chain where hundreds of CH2 are linked together.
Read Also: Organic Compounds
Importance of Organic Chemistry:
Organic chemistry is applicable in a variety of areas including-
- Medicines: Example- Aspirin which is a headache medicine and Ibuprofen is a painkiller, both are organic compounds. Other examples include paracetamol.
- Food: Example- Starch which is a carbohydrate is an organic compound and a constituent of rice and other grains. It is the source of energy.
- Clothing: Example- Nylon, Polyester and Cotton are forms of organic compounds.
- Fuels: Examples- Gasoline, Petrol and Diesel are organic compounds used in the automobile industry at large.