Los Angeles का ये Unknown Fact

A plano convex lens of unknown material and unknown focal length is given. With the help of a spherometer we can measure the

Species endangered but with unknown cause is

0.2 moles of an unknown compound weigh 5.6 g. The unknown compound is

Two statements are given followed by two conclusions I and II. You have to consider the two statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow from the given statements. Statements : (a) Some human creatures are angels. (b) All doctors are angels. Conclusions : I. Somc human creatures are doctors. II. Some doctors are human creatures.