Hello Aspirants. 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) !!!
- ……………………… is used for food preservative
5.None of theseAnswer – 1.Salicyclic Acid
Salicylic acid is a monohydroxybenzoic acid, a type of phenolic acid and a beta hydroxy acid. It has the formula C7H6O3. It is used for food preservative
- Which is also known as treacherous gas ?
5.None of theseAnswer – 4.Carbon monoxide
Carbon monoxide is completely odourless. Therefore smell cannot be relied upon to provide warnings of this treacherous gas. Open solid fires should be assumed to be constantly generating this gas
- ……………………. is a noble metal
5.All of theseAnswer – 5.All of these
The noble metals are a group of metals that resist oxidation and corrosion in moist air. Ruthenium,rhodium,palladium,silver,osmium,iridium,platinum and gold are noble metal
- Babbit is an alloy of ……………………
5.None of theseAnswer – 3.Tin
Babbitt metal is an alloy of Tin.It is also called white metal, is a soft, white non-ferrous alloy used to provide a bearing surface. It has properties that help reduce friction which make it a good material to use in a plain bearing.
- Which is a good absorbant of colour ?
5.None of theseAnswer – 3.Animal Charcoal
Animal charcoal is used in decolourising colour of liquids because it is a good adsorbant.
- Graphite has …………………. crystal system
5.None of theseAnswer – 1.Hexagonal
Graphite has Hexagonal crystal system
In crystallography, the hexagonal crystal system is one of the 7 crystal systems, the hexagonal lattice system is one of the 7 lattice systems, and the hexagonal crystal family is one of the 6 crystal families.
- ………………….. is called a universal Solvent
5.None of theseAnswer – 4.Water
Water is capable of dissolving a variety of different substances, which is why it is such a good solvent. And, water is called the “universal solvent” because it dissolves more substances than any other liquid. This is important to every living thing on earth
- Which of the following is used for washing wounds ?
5.None of theseAnswer – 4.Boric Acid
Boric acid can be used as an antiseptic for minor burns or cuts. It can be applied in very dilute solution as an eye wash, or to treat certain outer ear infections. It is an ingredient of various dressings and salves.
- …………………… is used to slow down neutrons emitted in a nuclear fission reaction
5.None of theseAnswer – 3.Moderators
The explosive effects of nuclear fission chain reactions can be reduced by using substances like moderators which slow down the speed of secondary neutrons
Ex- Heavy water, Beryllium
- Which is literally means ‘acid former’ ?
5.None of theseAnswer – 3.Oxygen
The name oxygen comes from the Greek stems oxys, “acid,” and gennan, “to form or generate.” Thus, oxygen literally means “acid former