In MnO4-4 What is the oxidation number of Mn?
The oxidation number of Mn IS +7 Solution Let the oxidation number of Mn be x. We know that, Ox.... View Article
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What is the size range of an eukaryotic cell?
5-100 micrometre Explanation Cells fall into one of two broad categories: prokaryotic and eukaryotic. Prokaryotes (pro– = before; –karyon– =... View Article
Which hormones are produced by pituitary gland?
The pituitary gland is a pea-sized endocrine gland situated in the middle of the skull base and kept protected within... View Article
How does colour perception takes place in man?
Colour perception in man is due to iodopsin pigment in cone cells. In the retina, there are three types of... View Article
How can we measure the radius for noble gases?
For noble gases, the radius is measured as van der Waals radius because these atoms are held together by weak... View Article
What are five examples of non-reducing sugars?
Non-reducing sugars do not have free ketone or aldehyde group. These sugars have acetal in place of hemiacetal. An acetal... View Article
What is the unit of acceleration and momentum?
The S.I. unit of acceleration is meter per second square or ms−2, and momentum is kg · m/s. Momentum and acceleration... View Article
State if the given statement is true or false.
The given statement is false. In epigeal germination, cotyledons remain underground
Faraday’s laws of electrolysis are related to:
Faraday’s laws are related to the equivalent mass of the electrolyte. Explanation Faraday proposed two laws to explain the quantitative... View Article
Which colour is shown by the permanganate ion?
Actually, the Permanganate ion shows a purple colour. Potassium permanganate Potassium permanganate is an oxidising agent with disinfectant, deodorising and... View Article
How many elements belong to lanthanoid series?
The fourteen elements following the lanthanum belong to the lanthanoid series. Lanthanide series In the periodic table, along the bottom... View Article
Which vegetation is known as Taiga vegetation?
Coniferous vegetation is also known as Taiga vegetation. Taiga forest The taiga is a forest of the cold, subarctic region.... View Article
In Ni(CO)4 what is the oxidation number of Ni?
Let x be the oxidation number of Ni in Ni(CO)4 . Since the overall charge on the complex is 0,... View Article
Why is pyridine less basic than triethylamine?
Pyridine is less basic than dimethylamine because the lone pair of nitrogen in pyridine is delocalised. Explanation Pyridine is a... View Article
Define homo atomic and hetero atomic molecules.
The smallest particle of an element, which may or may not have an independent existence, is called an atom. In... View Article
How Does Chemical Coordination Occur In Plants?
Coordination in plants means using different parts of the plant together, which is smooth and efficient. The chemical substances which... View Article
How many positional isomers are there in C5H11Br ?
The number of position isomers of C5H11Br is 3.They are bromopentane, 2-bromopentane and 3-bromopentane. What are positional isomers? Isomers are... View Article
Which is the most unsymmetrical crystal system?
In a triclinic crystal system, all the edges, as well as bond angles, are unequal. Crystal system A Crystal System... View Article
What is the dimensional formula for the torque?
Torque = Force x Perpendicular distance. Its dimensional formula is [M1L2T-2] Explanation Torque is the measure of the force that can... View Article
What do we get when ethene is reacted with HCl?
On reacting ethene with HCl we get chloroethane. It is an addition reaction. Explanation The reaction of alkenes with halogens... View Article
