Which of the following pairs of products obtained from petroleum distillation and their uses are correctly matched? 1. Petroleum ether : Used as solvent 2. Petroleum jelly : Used to make coating of metals 3. Petroleum wax : Used as rubber solvent 4. White spirit : Used for making candles Select the answer using the code given below.
1 and 2
Pair 1 is correctly matched: petroleum ether, a low-boiling light naphtha fraction, is widely used as a non-polar organic solvent for extraction and cleaning.
Pair 2 is correctly matched: petroleum jelly (a semi-solid mixture of hydrocarbons) is applied as a protective, water-repellent coating on metal surfaces to prevent rusting, besides its cosmetic uses.
Pair 3 is incorrect: petroleum wax (paraffin wax) is used mainly for making candles, wax paper and polishes, not as a rubber solvent.
Pair 4 is incorrect: white spirit is a light petroleum distillate used as a paint thinner and cleaning solvent, not for making candles.
Since only pairs 1 and 2 are correctly matched, the correct code is 1 and 2.
Consider the following statements in the light of octane number and cetane number of fuels :
1. Cetane number is used for gasoline and octane number is used for diesel.
2. Octane number of n-hexadecane is 100 and cetane number of isooctane is 100.
Which of the statements given above is/are correct?
Which of the following base is found in soap?
From the options given below, identify the substance which are sweet smelling ?
Which one of the following is the general formula of Alkenes?
What is the colour of the flame when alkenes are burnt?
Kolbe’s electrolytic method can be applied on