Correct Answer :   5

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The pentagram contains ten points (the five points of the star, and the five vertices of the inner pentagon) and fifteen line segments. It is represented by the Schläfli symbol {5/2}.

Correct Answer :   Lactometer

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Lactometer is used for measuring the density (creaminess) of milk. It is essentially a hydrometer which is an instrument used to measure the specific gravity (or relative density) of liquids; that is, the ratio of the density of the liquid to the density of water.

Correct Answer :   Laika, a dog

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Laika, a dog that was the first living creature to be launched into Earth orbit, on board the Soviet artificial satellite Sputnik 2, on November 3, 1957.

Correct Answer :   Venus

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Venus is the exception, as its proximity to the Sun and dense atmosphere make it our solar system's hottest planet.

Correct Answer :   Ganymede

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Ganymede: Jupiter's largest moon is the largest non-planet in the Solar System. With a diameter of 5,268 km (3,271 miles), it's 8% bigger than the planet Mercury, although it has less than half the mass of our Solar System's innermost planet, being made of mostly ices and silicate minerals.

Correct Answer :   James Watt

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James Watt was an 18th-century inventor and instrument maker. Although Watt invented and improved a number of industrial technologies, he is best remembered for his improvements to the steam engine.

Correct Answer :   Charles Darwin

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The theory of evolution is a shortened form of the term “theory of evolution by natural selection,” which was proposed by Charles Darwin and Alfred Russel Wallace in the nineteenth century

Correct Answer :   SLV-3

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Satellite Launch Vehicle-3 (SLV-3) was India's first experimental satellite launch vehicle, which was an all solid, four stage vehicle weighing 17 tonnes with a height of 22m and capable of placing 40 kg class payloads in Low Earth Orbit (LEO).

Correct Answer :   22 December

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22 December is a special day for mathematics. This day is observed as National Mathematics Day to celebrate the achievements of Srinivasa Ramanujan. The legendary mathematician was born on this day in 1887. In 2012, then prime minister Manmohan Singh declared 22 December as National Mathematics Day.

Correct Answer :   212⁰F

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Water boils at 100⁰C or 212⁰F at one atmosphere of pressure. Liquids boil when the pressure of the atmosphere is equal to the pressure of the liquid. When the pressure of the atmosphere is reduced a liquid boils at a lower temperature. This is what happens when you climb a mountain.