Which one of the following is known as cetane?
Hexadecane
This question asks us to identify which specific chemical compound among the given options is commonly referred to as "cetane". This relates to the standards used in the fuel industry, particularly for diesel.
The term "cetane" is crucial in defining the ignition quality of diesel fuel. The cetane number measures how quickly the fuel ignites and burns after being injected into the engine's combustion chamber. A higher cetane number indicates a shorter ignition delay, which generally results in more efficient combustion, quieter engine operation, and lower emissions.
The specific alkane that serves as the reference standard for the cetane number scale is Hexadecane. Its chemical name is n-hexadecane, and its chemical formula is represented in LaTeX as C_{16}H_{34}.
In the established scale for measuring diesel ignition quality:
C_{16}H_{34}) is assigned a cetane number of 100.Because it is the benchmark standard, n-hexadecane is commonly known simply as "cetane". Fuels are compared against this standard to determine their cetane number.
The other options provided are also long-chain alkanes, but they are not the reference standard known as cetane:
C_{17}H_{36}.C_{18}H_{38}.C_{19}H_{40}.While these compounds have properties related to diesel fuel, they do not hold the specific designation or serve as the reference standard that Hexadecane does in the context of the "cetane" scale.
Therefore, the compound known as cetane is Hexadecane.
The handle of pressure cookers is made of plastic because it should be made non-conductor of heat. The plastic used here is the first man-made plastic, which is:
The PCl 5 molecule has trigonal bipyramidal structure. Therefore, the hybridization of p orbitals should be __________.
The correct order of octane number of butane, pentane, hexane and cyclohexane is
Methanol is toxic because
Which one of the following is not an allotrope of carbon?
Match List-I with List-II and select the correct answer using the code given below the Lists:
List-I (Compound/Molecule) | List-II (Shape of Molecule) |
A. CH 3F | 1. Trigonal planar |
B. HCHO | 2. Tetrahedral |
C. HCN | 3. Trigonal pyramidal |
D. NH 3 | 4. Linear |
The x/monomers used for the synthesis of Nylon 6 is/are _________.
In which of the following, functional group isomerism in not possible?
Consider the following statements :
1. Concentrated \(H_2SO_4\) is used as a dehydrating agent in esterification reaction.
2. The hydrophilic part of soap is oil and it dissolves in water.
3. Nickel is used as a catalyst in converting vegetable oil into fat.
Which of the statements given above are correct ?
The catalyst used in the manufacture of methyl alcohol from water gas is
A carbon compound when heated in excess of concentrated sulphuric acid at 443K gives ethene. The compound is an________.
Plastic is not related to which of the following
The Peroxyacetyl Nitrate (PAN) is:
Which one of the following is the chemical name of heavy water ?