An ant can carry 50 times its weight. If a person can do the same, how much would you be able to carry?

A 5 henry inductor carries a steady current of 2 ampere. How can a 50 volt self induced e.m.f. be made to appear in the inductor?

A speaks truth in 60% of the cases, while B in 90% of the cases. In what percentage are they likely to contradict each other in stating the same fact? In the case of contradiction do you think , the statement of B will carry more weight as he speaks truth in more number of case than A?

How the following conversion can be carried out ? Chloroethane to butane.

Two person can finish the work in 7 days. (i) One of the persons fell ill before the work started . How much time will the other person take to finish the same work. (ii) How many persons will be needed to finish the work in one day.

Photosynthetic organisms occur at different depths in the ocean. Do they receive qualitatively and quantitatively the same light? How do they adapt to carry out photosynthesis under these conditions?