Solution: We have to compare 2/7 and 5/8. These are unlike fractions. We have to convert them to like fractions and then compare. LCM of... View Article
(a) m (b) m-1 (c) s (d) s-1 Solution: Wave number is the reciprocal of wavelength of a wave. It is defined as the number of waves per unit... View Article
Answer: Valency is the combining power of an element with another atom to form a chemical compound. Valence electron refers to electrons in the... View Article
(a) Maidservant (b) She servant (c) Servantess (d) none of these Answer: The feminine form of servant is maidservant. Hence option a is the... View Article
(a) Carbon dioxide (b) Iron (c) Oxygen (d) Nitrogen Solution: A compound is a substance formed from two or more elements chemically bonded... View Article