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The boiling points of alkanes increase with increase in molecular mass and for the same alkane, the boiling point decreases with branching. In the given question, all have the same number of C atoms but option 2 and 4 are branched compounds, hence, they will definitely have lower boiling point than butane and octane which are straight chain. Octane is a straight-chain compound that has a large surface area than butane. So, there are more van der Waals forces of attraction resulting in a high boiling point.
The present age of A is double of B's present age. C's present age is 3/5th of A's present age. Average age of A, B and C is 28 yrs. Find the present ag...
Three years ago, 'B' was twice as old as 'A'. In three more years, 'B' will be 60% older than 'A'. What is 'A's current age?
The current age of 'P' is 40% more than the current age of 'Q'. Seven years from now, the ratio of their ages will be 14:11. What...
At present Raveena age is 3(1/2) Diksha’s age and half of Mitesh’s age. After 6 years Raveena will be 2 times Diksha’s age. What is Raveena’s p...
The ratio of age of A and B after 8 years is 4:5 respectively. The ratio of age of A and C 6 years ago is 3:4 respectively. If the present average age o...
The ages of A, B and C together are 64 years. B is twice as old as A and C is 4 years older than A. What is the difference between ages of B and C?
Mother‘s age is 5 times more than her daughter age. After 6 years she would 5 times of daughter age. After further 6 years how would be of daughte...
Present age of ‘A’ is 40% more than that of ‘B’. If 11 years hence from now, ‘B’ will be 5 years younger than ‘A’, then find the sum of ...
A’s age is the seventh part of his father’s age. After 10 years, the age of A’s father will be twice the age of B. If B’s 5th bi...
