Welcome to Online General Knowledge section in Affairs cloud, which is important for all the competitive exams. We have created Some questions related to General Science(Chemistry) !!!
- Which is also known as Vermelium ?
5.None of theseAnswer – 1.HgS
Mercury sulfide, mercuric sulfide, mercury sulphide, or mercury(II) sulfide is a chemical compound composed of the chemical elements mercury and sulfur. It is represented by the chemical formula HgS. It is also known as Vermelium.
- …………………… is also known as Marsh gas
5.None of theseAnswer – 4.Methane
Marsg gas is methane, especially as generated by decaying matter in marshes.
- Calcium Sulphate is also known as ………………………
3.Plaster of Paris
5.None of theseAnswer – 3.Plaster of Paris
Calcium sulfate (or calcium sulphate) is the inorganic compound with the formula CaSO4 and related hydrates. In the form of γ-anhydrite (the anhydrous form), it is used as a desiccant. One particular hydrate is better known as plaster of Paris
- Marble is composed of ………………
5.None of theseAnswer – 1.Calcium carbonate
Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. It is composed primarily of the mineral calcite (CaCO3) and usually contains other minerals, such as clay minerals, micas, quartz, pyrite, iron oxides, and graphit
- Sugar Acid and ……………… from natural sources were identical
5.None of theseAnswer – 4. Oxalic acid
By 1784, Scheele had shown that “sugar acid” and oxalic acid from natural sources were identical
- Magnesium sulphate is also known as
5.None of theseAnswer – 3.Bitter Salt
Magnesium sulfate is an inorganic salt containing magnesium, sulfur and oxygen, with the formula MgSO₄. It is also known as Bitter Salt.
- Indian red is related to which chemical compound ?
5.None of theseAnswer – 1.Ferric Oxide
Indian red (color) Indian red is a pigment composed of naturally occurring iron oxides that is widely used in India.It is Ferric oxide.
- Talc is a clay mineral composed of which of the following ?
5.None of theseAnswer – 2.Magnesium Silicate
Talc is a clay mineral composed of hydrated magnesium silicate with the chemical formula H2Mg3(SiO3)4 or Mg3Si4O10(OH)2.
- …………..is a popular name for Sodium Silicate
5.None of theseAnswer – 2.Soluble Glass
Soluble glass is a popular name for sodium silicate or potassium silicate. Sodium silicate is the common name for compounds with the formula Na2(SiO2)nO. A well-known member of this series is sodium metasilicate, Na2SiO3. Also known as waterglass or liquid glass.
- Which of the following is the compenent of Pearl Ash ?
5.None of theseAnswer – 3.Potassium Carbonate
Potassium carbonate is the primary component of potash and the more refined pearl ash or salts of tartar.