Answer: D) 1, 2, 6 Explanation: 4 is father of 1 and grandfather of 6. So, 1 is father of 6. Thus, 4 and 1 are the two fathers. 3 is the sister of 6. So, 3 is the daughter of 1. Since there is only one mother, it is evident that 5 is the wife of 1 and hence the mother of  3 and 6. So, 2 is brother of 1. There are three brothers. So, 6 is the brother of 3. Hence, 2 and 1 are brothers. 6 is the brother of 3. So, three brothers are 1, 2, 6.

Answer: C) Giriprakash Explanation:

Answer: D) All the above Explanation:

Answer : 1152   Total positions are 8. In that boys can be arranged in 4 places and girls can be arranged in 4 places and hence this can be done in 2 ways. i.e => 4! x 4! x 2 = 24 x 24 x 2=1152.

Answer: B) Magnify Explanation: As Microphone makes sound louder similarly Microscope makes the object magnified.   Hence, Microphone : Loud :: Microscope : Magnify.

Answer: B) dry climates Explanation: Conditions suitable for the formation of a tornado develop when varying temperatures and humidity come together and form thunderclouds. This refers to the presence of warm and moist condition in the lower atmosphere and cold and dry conditions in the upper atmosphere. The place where these varying masses of air meet is known as the dry-line. Such conditions, which are suitable for the formation of a tornado, are most often observed just before a low pressure system develops.   Once the ideal conditions occur, the warm air tries to rise in the atmosphere, while the cold air blocks it. This makes the air in between rotate horizontally. In the meanwhile, the land is heated by the Sun, and hence, the air near the ground becomes warm and starts rising. Continuous fueling by the heat energy from the Sun ensures that the warm air has an upper hand over cold air. As a result of this, the cold air at the top starts sinking and the warm air below starts rising in a spinning motion. As the amount of warm air increases, the formation gains height and becomes intense. The intensity of these devastating tornadoes is such that they can clear off anything that comes in their path.

Fermentation is the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat.   The two most common types of fermentation are (1) alcoholic fermentation (and)  (2) lactic acid fermentation.   (1) Alcoholic fermentation : the type of fermentation in which ethyl alcohol is the main end product .This is very common in yeast (unicellular fungus) and also seen in some bacteria. Yeast cells release enzymes called zymase complex which bring about the fermentation. The reactions are similar to anaerobic respiration.   (2) Lactic acid fermentation : The type of fermentation in which lactic acid is the end product. It is carried out by some bacteria (e.g. lactic acid bacteria), and also by animals (muscle glycolysis in animals, under oxygen deficiency, results in the formation of lactic acid this is whay we experience in muscle cramps, or "Charley horse").

Answer: A) Football Explanation: Top five most popular games world wide are :   Game name              -      Estimated  fans     -    Popular Regions   1. Soccer / Football      -      3.5 Billion    -     Europe, Africa, Asia, America 2. Cricket                    -      2.5 Billion     -    Asia, Australia, UK 3. Basketball               -      2.2 Billion     -    US, Canada, China and Philippines 4. Field Hockey           -       2 Billion       -     Europe, Africa, Asia, Australia 5. Tennis                    -       1 Billion       -     Europe, Americas, and Asia.