Why is the sea water denser than fresh water?
Mixing of salts causes the density of sea water to rise.
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What does the depletion of ozone layer cause?
Depletion of ozone layer causes stratospheric pollution.
Name the area that receives the maximum heat.
Torrid zone is the area that receives the maximum heat.
Why dont we use hcl to clean statue of libery?
Cleaning the statue of liberty with acid would remove the protective copperoxide, wear away some of the coppernd leave the... View Article
What happens at the anode during electrolysis?
Anode being a positive elctrode attracts negative ions. At the anode, negative ions lose electrons. A few examples of anode... View Article
How far will a car travel in 25 min at 12 m/s?
Given A car travels at a speed of 12m/s in 25 minutes. Find out We have to find the distance... View Article
What is used as a cathode in a Leclanche cell?
Manganese dioxide or MnO2 is used as a cathode in a Leclanche cell.
Red soils are red in colour due to presence of
Its red colour is mainly due to ferric oxides occurring as thin coatings on the soil particles while the iron... View Article
What is the role of the brain in reflex action?
Reflex actions are sudden responses. It is an involuntary action that does not involve thinking. For example, when we touch... View Article
Why is blood needed by all the parts of a body?
Blood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells, and platelets. About... View Article
What should you do when acid gets on your skin?
When acid gets on our skin, the affected skin must be exposed to the running water.
Name the metal that can be easily cut by knife.
Answer: Sodium Sodium is an alkali metal and is so soft that it can be easily cut by knife. Soft metals... View Article
When the system A + B = C + D is at equilibrium?
Answer: (d) neither the forward nor the reverse reaction has stopped. Chemical equilibrium is dynamic in nature wherein concentrations of both... View Article
How far will a jeep travel in 2 hours at 20 m/s?
Given that Time = 2 hours Distance = 20m/s Speed = Distance / Time Distance = Speed x Time =... View Article
How are variations introduced in the offsprings?
Changes in the structure of DNA leads to variations. It is because of sexual reproduction.
When does the focal length of the eyes increase?
Answer: When the muscles are relaxed, the lens becomes thin. Thus, its focal length increases. The image is formed on the... View Article
What is the rate law for a first order reaction?
A first-order reaction has a rate law in which the sum of the exponents is equal to 1. In a first–order reaction, the... View Article
Name the principle on which the jet plane works.
Newton’s third law is the principle behind the working of a jet plane. It states that every motion has an equal... View Article
When is the Sun at the highest point in the sky?
Noon
What is the process of soap preparation known as?
Saponification is the process of making soap by the hydrolysis of fats and oils with alkalis.
