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This set of General Science Multiple Choice Questions & Answers (MCQs) focuses on Chemistry Set 6

Q1 | Which among the following methods can be used to remove the permanent hardness inwater due to calcium or magnesium sulphates?
Q2 | The free electrons are in the __________?
Q3 | Which of the following type of Coal, has maximum carbon content?
Q4 | What is the common name of Calcium Sulphate Hemihydrate?
Q5 | Which among following is also known as white gold?
Q6 | Which acid is described as HOOCCOOH?
Q7 | Carnotite is a mineral of which among the following metals?
Q8 | PVC is a polymer of ?
Q9 | When Sulphur is heated with rubber, the process is commonly known as ?
Q10 | Which among the following chemicals is used in Photography?
Q11 | Which among the following is major component of Gobar Gas?
Q12 | Which among the following is a common salt in Detergents?
Q13 | Potassium permanganate is used to purify water. Which among the following properties ofPotassium permanganate helps in this work?
Q14 | What happens to the weight of Iron, when it rusts?
Q15 | Lightest and most abundant chemical element, constituting roughly 75 % of the Universe‘selemental mass.
Q16 | A cotton wick dipped in pure honey when ignited with a matchstick will ______?
Q17 | The easily noticed smell of the LPG gas is because of which among the following?
Q18 | Which compound of mercury is used as antiseptic?
Q19 | Speed of sound is maximum in which among the following?
Q20 | Which among the following metal is highest electrical conductivity as well as highestthermal conductivity?
Q21 | Calamine is an ore of which among the following?
Q22 | Trimethylxanthine is a chemical name of a stimulant which is found in tea and coffee.What is the popular name?
Q23 | The popular drug ?Acetylsalicylic Acid? is commonly known by which among the followingnames?
Q24 | What are the main constituents of LPG?
Q25 | Which among the following is known as White Vitriol?