Which is a postulate of cell theory?
There are three postulates of the cell theory and they are: i) All living organisms are composed of cells. ii)... View Article
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What causes metal deficiency defect?
There are many solids which are difficult to prepare in the stoichiometric composition and contain less amount of the metal... View Article
What causes the refraction of light?
The cause of the refraction of light is that light travels at different speeds in different media. This change in... View Article
Na+ is smaller than Na atom because:
The total number of electrons is 10 in the case of Na+ and 11 in the case of Na, while... View Article
Give an example of a colourless ion.
Sc3+ does not have unpaired d- electrons. The atomic number of Sc is 21. Its configuration is 1s2 2s22p6 3s2... View Article
Name the ions that obey Huckel Rule.
All the aromatic ions obey Huckel rule i.e(4n+2) pie electrons are present in the ring.
Name the angles in the given figure:
Name the angles in the given figure Answer There are four angles in the given figure. They are ∠A or... View Article
What is the efficiency of Fuel cell?
Answer: A fuel cell can be defined as an electrochemical cell that generates electrical energy from fuel via an electrochemical... View Article
The central oxygen atom in ether is_______
The central oxygen atom in ether is sp3 hybridized. Explanation Ether is a common name for diethyl ether. Ether is... View Article
Which wire is used in on-off switch?
The on/off switch is provided with a live wire. What is a switch? An electric switch is a device that... View Article
Which is the largest state in India?
Rajasthan is the largest state in India, as per the area. India is the 7th largest country in the world.... View Article
What is the unit of moment of force?
The unit of moment of force is N m. The Moment of a force is a measure of its tendency to cause a body... View Article
What are the advantages of corrosion?
We all have heard that materials corrode when exposed to the atmosphere or moisture. Let us know more about this.... View Article
What is the structure of gymnosperms?
In gymnosperms, two types of haploid spores are present “ Micro-spores and Megaspores “ Produced in the sporangia. These sporangia... View Article
why mustard seeds crackle in hot oil?
The reson why mustard seeds crackle when placed in hot oil is because they contain moisture content. When these seeds... View Article
When does Carbon dioxide become solid
At 1 atmosphere pressure and temperature below -78.5 degree Celsius the gas solidifies and sublimes. Carbon dioxide in its solid... View Article
What is the main aim of conservation?
Conservation mainly depicts preserving the natural resources for the upcoming future generations. Our environment comprises many natural resources which plays... View Article
How to filter gutter water in cities?
In cities, gutter water is filtered through big metallic filters to separate solid materials present in it.
How do atoms usually exist in nature?
Atoms usually exist in two ways (1) in the form of molecules (2) in the form of ions
Are xylem vessel cells dead or alive?
All the components of the xylem except xylem parenchyma are dead. Hence xylem is non-living tissue. Explanation Xylem is the... View Article
