541: When iron rusts, the weight:
(a) Increases
(b) Decreases
(c) Remains the same
(d) First increases then decreases
542: The succession of Delhi Sultans to the throne was generally:
(a) Hereditary
(b) After fight between brothers
(c) By killing the father
(d) Invasion
543: Which of the following pairs is NOT correctly matched ?
(a) India's first Technicolour film : Jhansi Ki Rani
(b) India's first 3-D film : My Dear Kuttichat
(c) India's first insured film : Taal
(d) India's first actress to win the Bharat Ratna : Meena Kumari
544: In a carrom board game competition, m boys and n girls(m > n > 1) of a school participate in which every student has to play exactly one game with every other student. Out of the total games played; it was found that in 221 games one player was a boy and the other player was a girl.
Consider the following statements:
1. The total number of students that participated in the competition is 30.
2. The number of games in which both players were girls is 78.
Which of the statements given above is/are correct?
(A) 1 only
(B) 2 only
(C) Both 1 and 2
(D) Neither 1 nor 2
545: Who established four Maths in four corners of India?
(a) Shankaracharya
(b) Bhaskara
(c) Ramanujacharya
(d) None of these