Which of the following space objects is the planet Mercury closest to?
Earth
Moon
Mars
Venus
Mercury is the first planet from the Sun, followed by Venus. So, Venus is closest space object to Mercury from the given options.
Which of the following is the hottest planet in the solar system?
(a) Earth
(b) Mercury
(c) Venus
(d) Mars
Which of the following is not a planet?
(a) Mercury
(b) Saturn
(c) Mars
(d) Moon