Answer: D) Both A & B Explanation: The capacity of a water heater is measured in Gallons or Liters. In the USA, it is measured in Gallons and in India, we measure it in Liters. Hence, if the capacity of the water heater is 15 gallons or 15 liters, then it says that it can hold 15 gallons or 15 liters of water.

A Telephone or an Alarm...

Answer: C) Stars Explanation: Stars are what that come out at night without being called and are lost in the day without being stolen.

Answer: B) FALSE Explanation: The given statement, The heat from the sun reaches earth through Convection is FALSE.   Heat from the sun actually reaches the earth through Radiation. The process occurs through electromagnetic radiation, specifically, in which molecules are warmed when the heat reaches them, and these molecules then warm other molecules touching them, which continues until we feel the sun's heat.

Answer: B) 18 gms Explanation: The molar mass of H2O can be calculated as the following. M(H2O)= [2 x M(H)] + [M(O)]. And we know that M(H) = 1g/mol, M(O) = 16g/mol. So, M(H2O)= 2x1 + 16 = 18g/mol, That means 1 mole of H2O contains 18g.   Hence, one mole of H2O corresponds to 18 grams.

Answer: A) Alliteration Explanation: Alliteration is the one-word substitute for Commencement of words with the same letter.   Alliteration is a figure of speech which is identified as the occurrence of the same letter or sound at the beginning of adjacent or closely connected words.

Answer: A) TRUE Explanation: The given statement about similar triangles is TRUE.   Similar Triangles Theorem :: Similar triangles are two triangles with corresponding angles of equal measure, and the ratios of their corresponding sides' lengths are equal.

Answer: D) Methane Explanation: Methane is the main component of biogas and natural gas.