Answer: B) -2 Explanation: The sum of the oxidation numbers in a compound must equal zero. In the compound hydrogen sulfide, H2S, the two hydrogen atoms have an oxidation number of +1, for a total of +2. Therefore, the oxidation number of sulfur in the compound is -2, and the sum of the oxidation numbers is 0.

Answer: C) Between Explanation: Between the two I prefer tea is the correct sentence with suitable preposition.

Answer: A) Thermosphere Explanation: In terms of the Earth's atmosphere, they occupy regions called the thermosphere and the exosphere. The layer through which a satellite orbits depends on the satellite's function and the kind of orbit it has.   The thermosphere is a region of very high temperature that extends from the top of the mesosphere at around 85 kilometers (53 miles) up to 640 kilometers (400 miles) above the Earth's surface. It is called the thermosphere because temperatures can reach up to 1,500 degrees Celsius (2,732 degrees Fahrenheit).   However, despite the high temperatures, the pressure is very low, so satellites don't suffer heat damage.

Answer: C) Omnivores Explanation: An omnivore is an animal that eats food from both plants and animals. Animals that eat other animals are called carnivores. Carnivores that eat herbivores are called secondary consumers, and carnivores that eat other carnivores are called tertiary consumers.

Answer: A) Breathe Explanation: It is very hard to catch breathe when you run fast.

Answer: B) How often your interest is calculated and added back into your account Explanation: Compounding frequency : The time periods when interest will be calculated on top of the original loan amount (or) The number of compounding periods in one year.   The greater the compounding frequency, the more often your interest is calculated and added back into your account.

Answer: A) homogeneous Explanation: A Mixture is a material made up of two or more different substances which are mixed.   Mixtures can be either homogeneous or heterogeneous.   * A homogeneous mixture is a type of mixture in which the composition is uniform and every part of the solution has the same properties. * A heterogeneous mixture is a type of mixture in which the components can be seen, as there are two or more phases present.   Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances.

Answer: C) Aurum Explanation: The Chemical name of Gold is Aurum with symbol Au with atomic number 79 and a group 11 element. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal.