Chemistry Most Important One Liner Question and Answer part-4

Chemistry: Most Important One Liner Question and Answer part-4

 

• The conversion of solid directly into vapor is called - Sublimation.
• Who discovered X-Rays - Rontgen
• Failing solution - ammoniacal copper sulphate
• Which alcohols may have the strongest hydrogen bond – primary
• Failing solutions - ammoniacal copper sulphate
• An example of a natural polymer compound is- cellulose.
• There are half -cell reactions.
• The electrical carrying force of the sail will be - - 0.46v
• Calcium carbide reacts with water, which hydrocarbon gives- Acetylene
• When natural rubber is heated with sulfur. This process is called – Vulcanization
• The chemical formula of bleach powder is- Ca(oh)2
• Loss of an electron from a neutral atom, which process is known as- oxidation.
• Stanley Steel prevents Corrosion due to- Chromium
• Who gets what by electrolysis of Sodium Succinate - C2H2
• Thiosulfate ion is oxidized to I2 with the following: S4O6-2
• Number of ions present in K3[Fe (CN)6] is – 4
• 2-Pentanol and 3-Pentanol can be differentiated by- Iodoform reaction
• An inert gas that was discovered in the Sun before being discovered on Earth – He
• Increased use of which gas is responsible for global incubation - Carbon dioxide
• The main sources of carbon monoxide are- transport.
• What are synthetic detergents made from - sodium salt of benzene sulfonic acid
• The maximum permissible concentration of total hardness in drinking water is – 200
• Where is pure metal collected during electrical refining – anode
• Most fuels are carbon compounds - with hydrogen.
• The heat energy obtained from the Sun is called- the nucleus energy
• Reaction is heat dependent - the path through which the maximum product is obtained.
• Greenhouse gases - CO2, CH4, NO and CFC
• A white solid substance A, on heating, removes a gas, which turns lime water to milky, the remaining material remains yellow in hot state, but turns white when cooled accordingly. What is solid A- Zinc Carbonate
• Iron and manganese are removed from water by which process - air mixture
• Excess fraction of water absorbed by steps is extracted – transpiration
• What are the substances that bring down fever in the condition of high fever- antipyretic
• Sulfuric acid is- anisotropic.
• What is the function of depressurization in the treatment of dirty water - removal of suspended solids
• There are two metal ions that cause hardness in water - calcium, magnesium.
• Which metals contribute to the bio-magnification problem in ecology – Mercury
• Elements that are not in nature but can be produced artificially, what is- Plutonium
• What is the process involved in the iron ore fermentation process – oxidation
• The diagonal is used to change - the alternating current into the direct current
• Elements having different physical properties but with similar chemical properties are called as- Allotropes
• Hexavalent chromium is strongly present in the exclusion of which - tanning houses
• Thermal decomposition is the method followed for disposal - hazardous waste
• Fullerene is a newly discovered crystalline carbon molecule - 60C atom.
• Maximum moisture content of composting mixture for vermicomposting is- 65
• The permitted concentrations of residual chlorine in drinking water, in mg / L, are- 2
• What is the chemical used to develop photographic films – hypo
• Arsenic pollution - black foot disease
• Alcoholic fermentation is made by- yeast.
• Non-metals found in liquid state are- bromine.
• The heaviest element found in nature is- uranium.
• Causes of formation of acid rain- air pollution
• Who determines the chemical properties of an element - number of electrons
• The worst air polluting substances are- carbon monoxide.
• Carbohydrate whose compounds are- carbon, oxygen and hydrogen.
• By which devices can they be shielded from external magnetic effects - brass shield
• By which reaction amides can be converted into amines – Hoffmann
• Which processes are not beneficial to prevent iron from rusting – annealing
• Phenolics as pollutants can be extracted from dirty water by using- polymer adsorbent
• Who is used as the founder in dyeing - chromium salts
• What is the product of equal weight and valency of an element- molecular weight
• Pencil lead- graphite
• Octane numbers are a measure of quality - of petrol
• Fossil fuels are the source of energy through fermentation to supplement petrol - ethanol.
• PVC can be obtained by polymerization- vinyl chloride
• In the refrigerator, cooling is generated by- by the evaporation of a volatile liquid
• Itai-itai disease is caused by poisoning by- Cadmium
• Who gives blue color to glass- Cobalt oxide
• What is iodized salt - a mixture of potassium iodide and ordinary salt
• In which base order are the basic elements arranged in the periodic table- Atomic number
• A mixture of calcium aluminate and calcium silicate is called- Cement
• Who is considered the pioneer of modern nuclear theory- John Dalton
• By what name is chloro-fluoro carbon- glycerol
• In what order are the drilling powers of α, β and γ in their descending order - γ, β, α
• Sodium chloride is commonly known as- the common salt.
• The father of India's nuclear power program was- Homi Bhabha
• What is called to heat an ore to a lower temperature than its melting point in the absence of air- Calcination
• No solid can change its shape easily in comparison to a liquid, because - in the solid there is strong internal force.
• Arthur Kornberg was awarded the Nobel Prize for his work on - a gene, a polypeptide hypothesis.
• Which compound has a minimum value for octane number - n-heptane
• In what form is the relative humidity expressed: Ratio
• According to the special theory of relativity, the mass of a particle - in relation to a unit, increases with an increase in velocity
• Application of zinc coating does not cause rust in iron. This process is called- Corrosion
• Magnetite - Fe3O4
• Transfer of water - decomposed and condensed
• White phosphorus is generally kept under- Kerosene
• For an automatic process, − ΔG is negative.
• With the help of which the purity of a metal can be determined - the principle of mass conservation
• In an oxygen molecule, two atoms are bonded by which- two bonds
• 92-U238 How many neutrons are in an atom – 146
• When placed in it, the volume of the cell increases – hypersensitivity
• Rubber is the product of- Latex
• Formic acid is produced by- Red Ant
• According to the kinetic theory of gases, at the absolute zero temperature, the molecules of- the gas start the motion.
• The main use of sulfur is in the manufacture of- H2SO4
• Greenhouse effect is mainly due to the increase in the atmosphere - ozone CO2
• Linear spectrum produced by- H2- Hydrogen molecule
• Universal solvents are – water
• Cryolite - Na3A/F6
• What happens in Aqua Regia- 3 parts of concentrate HCL + 1 part of concentrate HNO3
• Examples of starch are- Polysaccharide
• In the periodic table of elements, the radius of an atom is ......... when moving from left to right in a period - reduced