The principle involved in paper chromatography is _______
The principle of paper chromatography is partition. In paper chromatography, there are two phases: the stationary phase and the other... View Article
Latest Posts
Scrubbers are devices used to remove _______ pollutants
Scrubbers are devices used to remove gaseous pollutants. What is scrubbing? Scrubbing, sometimes referred to as flue gas desulfurization, is... View Article
Why does an object float or sink when placed on the surface of water?
Answer: An object float or sink when placed on the surface of the water because, An object sinks in water... View Article
Potassium Chloride conducts electricity in _______ state.
Potassium Chloride conducts electricity in a molten state. The movement of ions takes place only in a molten state Why... View Article
In Carbohydrates, the ratio of Hydrogen: Oxygen is ________
Carbohydrates can be represented by the stoichiometric formula (CH2O)n, where n is the number of carbons in the molecule. Therefore,... View Article
_______ closes the windpipe at the time of swallowing food.
A soft flap of tissue called the epiglottis closes over the windpipe when we swallow to prevent choking. The epiglottis prevents foods from entering the... View Article
Give an example of a combination reaction between an element and a compound.
Sulphur dioxide is a compound and oxygen is in elemental form. They combine to form sulphur trioxide. A combination reaction... View Article
The Law of Octaves was applicable only up to element ________
The Law of Octaves was applicable only up to calcium, as after calcium, every eighth element does not possess properties... View Article
Burning of Magnesium ribbon in the air is an example of _________
Magnesium ribbon burns in the air to form Magnesium oxide. This is a combination reaction as two reactants combine to... View Article
How is our atmosphere different from the atmospheres on Venus and Mars?
Answer: Earth’s atmosphere is a mixture of nitrogen (79%), oxygen (20%), and a small fraction of carbon dioxide, water vapours... View Article
Newland’s classification of elements did not include ________
Newlands’ classification of elements did not include noble gases. Law of octaves In 1866 an English scientist John Newlands arranged... View Article
The size of solute should be ________ for better solubility
The smaller the size of the solute particle, the greater is the solubility. How the size of the solute impacts... View Article
A typical solar cell can produce about _______ electricity.
A typical cell can produce about 0.7 W of electricity. What is a Solar cell? It is a device that... View Article
Deficiency of ________ results in skin Lesions and Albinism.
Deficiency of Melanin results in skin Lesions and Albinism. What is Albinism? Albinism is an inherited disease characterized by a... View Article
Poor skeletal growth occurs due to the deficiency of _________
Poor skeletal growth occurs due to the deficiency of growth hormone. What is growth hormone deficiency? Growth hormone is a... View Article
The inner lining of the Larynx is made up of ______ epithelium.
The lining of the larynx is made of stratified ciliated columnar epithelium. What is the larynx? The larynx (voice box) is an organ located in the anterior... View Article
Carbon dioxide constitutes about ________ % by volume in air.
Carbon dioxide constitutes about 0.04 % by volume in the air. The abundance of Carbon in the atmosphere Carbon dioxide... View Article
The Specific Latent Heat of Vaporization of water is ______
The specific latent heat of vaporization of water is 540 cal/g or 2260 J/g. The specific heat capacity is defined... View Article
[Co(NH3)4Cl2]NO2 and [Co(NH3)4Cl(NO2)]Cl exhibit which type of isomerism?
[Co(NH3)4Cl2]NO2 and [Co(NH3)4Cl(NO2)]Cl re examples of ionisation isomerism. Ionisation isomerism Compounds that gives different ions in solution, although they have... View Article
In Dobereiner’s Triad, elements showed similarities in _______
In Dobereiner’s triad, elements showed similarities in properties. Law of Triads In 1817, Johann Dobereiner noticed that Strontium had similar... View Article
