Choose the correct alternative.i) Stars twinkle because of thea) explosions occurring in stars from time to time.b) absorption of light in the earth's atmospherec) motion of stars.d) changing refractive index of the atmospheric gases.ii) According to Newton's first law of motion, higher the mass_ is the inertia.a) lowerb) higherc) zerod) doubleiii) Which of the following metals does not react with cold or hot water but reacts with steam?a) Potassiumb) Calciumc) Magnesium d) Ironiv) A student obtains a clear image of a candle on a screen with the help of convex lens. He nowwants to focus on a distant tree and obtain a clear image. In which direction should he movethe lens in order to get a clear image?a) Behind the screenb) Away from the screenc) Towards the screend) At a very long distance from the screen.v) Water expands on reducing its temperature below__a) 0b) 4d) 5OCc) 12​