Answer: C) 4 Explanation: A square and a rectangle each have 4 right (90 deg) angles.  Both square and rctangle have 4 sides and 4 angles, but the only difference is square is a rectangle with all sides equal.

Answer: A) Latitude Explanation: Latitude comes first among latitude or longitude.  Latitude is written before longitude. The first number is always the latitude and the second is the longitude. Latitude is written with a number, followed by either “north” or “south” depending on whether it is located north or south of the equator. Longitude is written with a number, followed by either “east” or “west” depending on whether it is located east or west of the Prime Meridian.

Answer: C) The two products will sell at the same market price Explanation: A production–possibility frontier (PPF) or production possibility curve (PPC) is the possible tradeoff of producing combinations of goods with constant technology and resources per unit time.

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Here I give you the first 30 Atomic elements names and their Atomic masses.   Atomic number      Element        Atomic mass                                      1                 Hydrogen           1         2                  Helium              4         3                 Lithium              6.94         4                Beryllium            9.01         5                  Boron               10.81         6                Carbon               12.01         7                Nitrogen             14.01         8                Oxygen              15.99         9                Fluorine              19.00        10                Neon                 20.18        11               Sodium               22.99        12             Magnesium           25.31        13             Aluminium            26.98        14               Silicon                28.09        15             Phosphorus           30.97        16               Sulphur               32.07        17               Chlorine              35.45        18                Argon                 39.95        19             Potassium              39.10        20              Calcium                40.08        21             Scandium              44.96        22             Titanium               47.87        23            Vanadium              50.94        24             Chromium            24. 52        25            Manganese            54.94        26                Iron                  55.85        27              Cobalt                 58.93        28               Nickel                 58.69        29              Copper                 63.55        30                Zinc                   65.41

Answer: C) 29 June Explanation: National Statistics day is celebrated annually 29th June, on the occasion of Birth anniversary of India’s eminent statistician Late Prof Prasanta Chandra Mahalanobis. It also commemorates the contributions made by PC Mahalanobis in the fields of statistics and economic planning.

Te Sun. From the time rising it goes around the house upto sunset, but never touches the house.

Answer: B) 138 Explanation: The gram formula mass of a compound is nothing but the molar mass. The molar mass of K2CO3 (Potassium Carbonate) is given by Atomic weights of individual elements are   K (Potassium) = 39 g C (Carbon) = 12 g O (Oxygen) = 16 g   Hence, that of K2CO3 = 39(2) + 12 + 16(3) = 78 + 12 + 48 = 138.