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 the purest form of Iron
5.None of theseAnswer – 1.Wrought Iron
wrought iron contains 0.12 to 0.25% carbon and it is the purest form of iron.
- A solid may be made up of ………………..
4.All of these
5.None of theseAnswer – 4.All of these
A solid may be made up of Atoms Ions Molecules.The forces between the atoms in a solid can take a variety of forms.
- Of the 20 amino acids in your body’s proteins ……….. are essential to your diet
5.None of theseAnswer – 4.9
Of the 20 amino acids in your body’s proteins, nine are essential to your diet because your cells cannot manufacture them: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine.
- Bucky balls is an allotropic form of which of the following ?
5.None of theseAnswer – 2.Carbon
Spherical fullerenes are also called Buck minster fullerene (buckyballs), and they expanded the number of known carbon allotropes
- …………………… is made up of Toluene
5.None of theseAnswer – 4.Saccharin
Saccharin is an artificial sweetener with effectively no food energy which is about 300–400 times as sweet as sucrose or table sugar. It is made from Toluene
- Angle in water molecule is ……………………
5.None of theseAnswer – 1.104.50
The result is a distorted tetrahedral arrangement in which the H—O—Hangle is 104.5°
- ………….. isotopes have odd atomic number
5.None of theseAnswer – 3.86
So far 86 isotopes have odd atomic number
- …………. Percentage of calcium in calcium carbonate
5.None of theseAnswer – 1.40%
In 1500mg Calcium carbonate contain 40% calcium
- The diameter of an atom ranges from ……………….
1.0.001nm to 0.004nm
2.0.02nm t0 0.05nm
3.0.1nm to 0.5nm
4.0.1nm to 0.2nm
5.None of theseAnswer – 3.0.1nm to 0.5nm
An atom is a million times smaller than the thickest human hair. The diameter of an atom ranges from about 0.1 to 0.5 nanometers (1 × 10-10 m to 5 × 10-10 m)
- 1Which is Carnalite ?
5.None of theseAnswer – 2. KMgCl3 6(H2O).
Carnallite is an evaporite mineral, a hydrated potassium magnesium chloride with formula KMgCl3 6(H2O). It is variably colored yellow to white, reddish, and sometimes colorless or blue.