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?
Which one of the following is the general formula of Alkenes?
Maximum quantity of carbon is present in
Which of the following pair gives 1° carbonium ion by hydrolysis of C-Br bond?