A catalyst has no effect on ________
A catalyst does not affect the energy of reactants, the energy of products and enthalpy change of a reaction. Characteristics... View Article
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An example of a colloid is_________
Milk is a colloidal solution that appears to be homogeneous but actually is heterogeneous. Properties of colloids Colloids are mixtures... View Article
Current in a circuit flows:
Current in a circuit flows in a direction from high potential to low potential. What is current, and how it... View Article
Chlorine was discovered by:
Scheele discovered chlorine in 1774 by the action of HCl on MnO2. Chlorine-The Element The gaseous element itself was first... View Article
Atomicity of phosphorus is:
The formula of Phosphorus is P4. So the atomicity of phosphorus is 4. What is atomicity? The number of atoms presents... View Article
Alkaline earth metals show:
Since the outermost orbital contains only two electrons, alkaline earth metals show divalency by losing these two electrons. Properties of... View Article
Aldehydes and ketones have:
Aldehydes and ketones have Carbonyl group (C=O) in common. Properties of Aldehydes and ketones In a ketone, two carbon groups... View Article
The value of ‘g’ is minimum at ______
The value of ‘g’ is minimum at the equator because earth is not a perfect sphere. Its radius is maximum... View Article
The valency of inert gas is:
Valency is a combining capacity of an element. As there are no free electrons in the valence shell and the... View Article
In a group, the atomic size:
The atomic size increases from top to bottom in a group because new shells are being added as we go... View Article
Why does ice float on water?
Ice floats on water because the density of ice (0.917 g cm-3) is less than water (1 gm-3). Why is... View Article
Aqua regia releases nascent:
Aqua regia is a concentrated mixture of nitric and hydrochloric acids. Aqua regia can dissolve gold and platinum. These metals... View Article
Name a spore producing plant
Bread mould is a spore-producing plant. What are spores? Spores are reproductive cells in plants, algae and other protists; and... View Article
Cryolite is the chief ore of _______
Cryolite is the chief ore of aluminium. What is an ore? Ore is defined as an economic concentration of minerals.... View Article
Manioc is the staple food of_______
Manioc is the staple food of Amazon. What is manioc used for? It is one of the main constituents of... View Article
Black soil is also known as ______
Black soil is also known as regular soil. The soil comprises various amounts of vital nutrients necessary for cultivation. The... View Article
Twining of tendrils is due to ______
Thigmotropism is the curvature movement of a plant in response to a unilateral touch stimulus and can be observed in... View Article
A drop of water behaves likes a ______ lens
The rays of light converge when they pass through the drops of water. Thus, the drop of water behaves like... View Article
What is meant by a substance?
Answer: A substance is a matter that has definite properties and composition. Every pure compound and element is a substance.... View Article
An inclined plane is always a
An inclined plane is a flat supporting surface tilted at an angle, with one end higher than the other, used... View Article
