How many number of isomers are possible for a disubstituted benzene?
For a disubstituted benzene, the isomers possible are ortho, meta and para.
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Which phenomenon is responsible for spherical shape of liquid drops?
Answer: Surface tension is responsible for the shape of liquid droplets. Surface tension Surface tension is the tension of the... View Article
What is the characteristic of organisms belonging to the same order?
They cannot interbreed among themselves.
Which antiseptic is added to prevent bacterial growth on dead seeds?
Carbolic acid
What will happen if the oxyntic cells of gastric glands get damaged?
Oxyntic cells secrete concentrated HCl and intrinsic factor. Intrinsic factor plays an important role in the absorption of the vitamin... View Article
How much energy is available for the organisms of next trophic level?
The energy of the sun is transferred from one trophic level to another i.e. from plants to herbivores to small... View Article
Calculate the number of electrons constituting one coulomb of charge.
Answer: An electron is a subatomic particle commonly represented as e– or e. It possesses negative polarity. An electron inherits the... View Article
What happens to the acceleration of a body if the body comes to rest?
If a moving body comes to rest, then its acceleration is negative, as it’s velocity becomes zero. therefore the acceleration... View Article
What makes it easy to remove dissolved gases from liquids by heating?
Degasification is the removal of dissolved gases from liquids, especially water or aqueous solutions, in the fields of science and... View Article
How many types of three dimensional lattices are present in crystals?
There are 14 types of three-dimensional lattices are present in crystals. These types are known as Bravais lattice. These lattices are named... View Article
Which of the following displaces oxygen from water?F2, Cl2, Br2, I2
F2 is a very strong oxidising agent due to which it displaces oxygen from water. Fluorine as a strong oxidising... View Article
Find the angle measure between the hands of the clock in each figure.
(i) 90—‹ (Rightangle) (ii) 30—‹ (Acuteangle) (iii) 180—‹ (Straightangle)
How many structures can compound with molecular formula ‘C3H6O’ have?
A compound with molecular formula C3H6O can have 11 structural isomers.
Propanone and prop-2-en-1-ol are examples of which type of isomerism?
Propanone and prop-2-en-1-ol are examples of functional isomers. Two or more compounds having the same molecular formula but different functional groups are... View Article
How many bonds are present in S-S bond in pyrosulphuric acid (oleum)?
The number of S-S bond in pyrosulphuric acid (oleum) is zero. The compounds contain 4 bonds. Four oxygen atoms are... View Article
What is the value of the resultant magnetic field at a neutral point?
At a neutral point, the resultant magnetic field is zero. The point where the resultant magnetic field vector or intensity is... View Article
Which causes more health hazard – acute diseases or chronic diseases?
Acute diseases do not cause much harm to the body. A virus or an infection often causes acute conditions. Still, they... View Article
Does sound follow the same laws of reflection as light does? Explain.
Yes. Sound follows the same laws of reflection as light. The reflected sound wave and the incident sound wave make... View Article
“Tissue in the leaf that has the highest concentration of chloroplasts” Comment.
This is the tissue below the epidermis, and closest to the top of the leaf. It has the highest concentration... View Article
What is the function of leghaemoglobin in the root nodules of legumes?
Leghaemoglobin sounds similar to haemoglobin. The function of it is also similar to the haemoglobin in the blood of a... View Article
