What is the common oxidation state of the elements of lanthanoids series?
The common oxidation state of the elements of the lanthanoids series is +3. The principal and common oxidation state are +3.... View Article
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How many number of S-S bonds are there in sulphur trioxide trimer (S3O9)?
The number of S-S bonds in sulphur trioxide trimer (S3O9) is Zero
In the equation k = PZAB e-Ea/RT, what is the term used for describing P?
In the above equation, P is known as the Probability factor. In chemical kinetics, the pre-exponential factor or A factor... View Article
What is the meaning of the Greek word ‘Planetai’ that is used for planet?
Asteres planetai, ‘wandering stars’, for star-like objects which apparently moved over the sky, was the term employed by Greek astronomers.... View Article
Why there is a decrease in resistance when a parallel combination is used?
When two resistors are connected in parallel, the effective area of a cross-section through which the current can pass, increases.... View Article
Why is the weight of an object on the moon 1/6th its weight on the earth?
The mass of the moon is 1/100 times and its radius 1/4 times that of earth. As a result, the... View Article
How many electrons are involved in the oxidation of KMnO4 in basic medium?
One electron is involved in the oxidation of KMnO4 in a basic medium. Explanation KMnO4 oxidised in acidic, basic as well... View Article
What is the percentage of p-character in forming P-P bonds in P4 molecule?
In the formation of the P4 molecule, the P atom uses sp3 hybrid orbitals. Thus, the p-character in hybrid orbitals... View Article
To which type of unit cell does face centered and body centered belong to?
Face centered and body centred belongs to centred unit cells. Unit Cell is the smallest part (portion) of a crystal lattice. It... View Article
What are the bond angles of a molecule with trigonal bipyramidal geometry?
When a molecule has trigonal bipyramidal geometry bond angles are 120°, 90°. Trigonal bipyramidal: In this type of structure five... View Article
What does the tube like portion present between larynx and bronchi called?
The trachea connects the larynx with the two bronchi. The trachea or the windpipe rises below the larynx and moves... View Article
Mention the reason why tungsten is a suitable metal for Thermionic emission
Tungsten is a suitable metal for Thermionic emission, has a high melting point of 3655 K but its work function... View Article
What is the composition of the Glomerular filtrate that enters the nephron?
The Glomerular filtrate consists majorly of water and other constituents such as amino acids, glucose, potassium, sodium, urea, uric acid... View Article
What is the difference between cellular respiration and tissue respiration?
Respiration is a metabolic process that occurs in all organisms. It is a biochemical process that occurs within the cells... View Article
What substance do the ceruminous glands lining the auditory glands produce?
The ceruminous glands or wax glands produce cerumen or wax, which traps dust and other particles and prevents them from... View Article
Name the factor on which the increase in length of a rod on heating depend.
The increase in length of a rod on heating depends on its initial length, its rise in temperature and its... View Article
What happens to the electric current when the potential difference is zero?
Electric current will stop flowing when a potential difference is zero. It means two ends are at the same potential.... View Article
If x is real, the maximum values of expression (x2+14x+9)(x2+2x+3) will be?
Answer: The maximum value will be [-5,4] Explanation: Let, y = (x2 + 14x + 9)/(x2 + 2x + 3) i.e. x2 +... View Article
Judge the equivalent resistance when the following are connected in parallel − (a) 1 Ω and 106Ω, (b) 1 Ω and 103Ω and 106Ω
Answer: Given that (a) 1 Ω and 106Ω, (b) 1 Ω and 103Ω and 106Ω are connected in parallel. Find... View Article
Name the compound which is most reactive towards electrophilic substitution.
The Methyl group is an activating group. Activating groups attached to the benzene ring increase the reactivity of benzene towards... View Article
