Correct Answer : Sodium thiosulphate
Correct Answer : Sodium
Correct Answer : Calcium carbonate
Unsourced material may be challenged and removed. A blackboard (also known as a chalkboard) is a reusable writing surface on which text or drawings are made with sticks of calcium sulfate or calcium carbonate, known, when used for this purpose, as chalk.
Correct Answer : Xenon
Correct Answer : Mercury
Mercury is an extreme planet in several respects. Because of its nearness to the Sun—its average orbital distance is 58 million km (36 million miles)—it has the shortest year (a revolution period of 88 days) and receives the most intense solar radiation of all the planets.
Correct Answer : Due to oxidation of an enzyme present in apple
Correct Answer : Tantalum Carbide
Correct Answer : Increase
Correct Answer : Atmospheric pressure is low
Correct Answer : Evapotranspiration
