Answer: D) 1000 Explanation: Letters of the alphabet used in ancient Rome to represent numbers: I = 1; V = 5; X = 10; L = 50; C = 100; D = 500; M = 1000. The numbers one through ten are written I, II, III, IV, V, VI, VII, VIII, IX, and X.

Answer: B) Mahesh Kumar Jain Explanation: Mahesh Kumar Jain was appointed as MD and CEO of IDBI bank in April 2017.

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Answer: D) Chloroplasts Explanation: Photosynthesis takes place inside plant cells in small things called chloroplasts. Chloroplasts contain a green substance called chlorophyll and this absorbs the light energy needed to make photosynthesis happen.

Answer: A) Heart Explanation: Arteries carry oxygenated blood away from the heart to the tissues, except for pulmonary arteries, which carry blood to the lungs for oxygenation (usually veins carry deoxygenated blood to the heart but the pulmonary veins carry oxygenated blood as well).

Answer: B) 18 gms Explanation: The molar mass of H2O can be calculated as the following. M(H2O)= [2 x M(H)] + [M(O)]. And we know that M(H) = 1g/mol, M(O) = 16g/mol. So, M(H2O)= 2x1 + 16 = 18g/mol, That means 1 mole of H2O contains 18g.   Hence, one mole of H2O corresponds to 18 grams.

Answer: D) Agra Explanation:  The UP government changed the name of Gorakhpur and Agra Airports as well as the name of the department of welfare of the differently abled.  The Gorakhpur Airforce Station has been renamed as Mahayogi Goraknath Airport after the founder of the Nath monastic movement. The Agra Airport will be renamed after Pandit Deen Dayal Upadhyay airport. The Department of Disabled Welfare will now be known as 'Divyang Jan Vikas Empowerment'.

Answer: C) 11/18 Explanation: Let the total number of workers be x. Then,    Number of women = x/3 and number of men = x - x/3  = 2x/3   Number of women having children = x/18   Number of men having children = x/3   Number of workers having children = (x/18) + (x/3) = 7x/18    Therefore, workers having no children = x - 7x/18 = 11/18 of all workers.