Answer: A) Sister Explanation: The man's brother's father means his father is the only son of woman's grandfather => grandfather to the man also => Woman and the man are brother and sisters.

Answer: C) Blood Explanation: The main function of the pulmonary alveoli is to perform the transfer and exchange of gases. Here in the given options, blood is only one which is not gas.   Hence, blood is not transferred by alveoli.

Answer: C) Incorrect CMOS Settings Explanation:

Answer: A) 15 metres Explanation: As clear from the diagram, AD2=122+92=152 So AD = 15

Answer: A) Herodotus Explanation: Herodotus, a Greek author written the first history book in 5th century B.C.

Answer: D) Both B & C Explanation: Galileo Galilei (1564-1642) was an Italian Astronomer who        1) Discovered 4 satellites of Jupiter 2) Developed Telescope   3) Discovered that the movement of pendulum produces a regular time measurement He is Physicist, Mathematician, inventor, and philosopher Too.

Answer: D) 300 Explanation: Number of books that can be placed in the larger box is given by Volume of Box / Volume of book.Now, n = 25 x 42 x 60 / 7 x 6 x 5 = 63000 / 210 = 300.Therefore, 300 books can be in that box.

Answer: C) 30000 deg Cent Explanation: Lightning is extremely hot — a flash can heat the air around it to temperatures five times hotter than the sun’s surface. This heat causes surrounding air to rapidly expand and vibrate, which creates the pealing thunder we hear a short time after seeing a lightning flash. Lightning heats the surrounding air to about 30,000 degrees Centigrades.