The great granary of Indus valley civilization has been discovered by which site?
Great Granary was found at Mohen-jo daro, while six small granaries were found at Harappa. The site belongs to the... View Article
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What is the use of coordinate geometry in daily life?
Coordinate Geometry (or analytic geometry) illustrates the link between geometry and algebra through graphs connecting curves and lines. It gives... View Article
What is vascular bundle?
A vascular bundle is a part of the transport system in vascular plants which is comprise two tissues. Vascular bundle... View Article
Name the two fertilizers containing nitrogen and containing phosphorus
Urea and diammonium phosphate are two of the compounds which contain nitrogen. Nitrogen (N), Phosphorus (P) and Potassium (K) are... View Article
The amount of water vapour present in the air is called? (i) Temperature (ii) Humidity (iii) Moisture
The amount of water vapour present in the air is termed as humidity .The percentage of moisture present in the... View Article
Write the formula of cryolite. Give its function in the extraction of aluminium.
The formula of cryolite is Na 3 AlF 6 . Cryolite is added to the molten mixture of alumina to... View Article
What are the valencies of Sulfite, Bisulfite, and Sulfate?
The compound given in the questions are different types of ions formed by the element sulfur. Sulfite – SO32- Bisulfite... View Article
What happens when zinc metal is added to acetic acid?
when Zn metal is added to acetic acid this reaction occurs: Metal + Dilute Non-Oxyacid → Salt + Hydrogen Zn... View Article
Name the venation of neem leaf and mint leaf.
Venation is the arrangement of veins in the lamina of the leaf . Two types of venation are reticulate venation... View Article
A well of diameter 4m is dug 14m deep. The earth taken out is spread evenly all around the well to form a 40cm high embankment. Find the width of the embankment.
Given, Depth of well = 14 m, radius = 2 m. Volume of earth taken out = πr2h Let h... View Article
What are the advantages and disadvantages of a series combination?
Disadvantages of series combination: If one component in a series circuit fails, then all the components in the circuit fail... View Article
Prove that diagonals of a parallelogram bisect each other
Consider a parallelogram with sides ABCD in which diagonals AC and BD bisect each other. To Prove : OA =... View Article
A wheel of a bicycle has more than one type of motion. Explain
If a bicycle moving on a straight road,the wheel of bicycle is rotating on its axle and also moving forward... View Article
Use prime factorization method to find the cube root of 10648
The given number is 10648 On the prime factorisation of 10648, we get the prime factors as 10648 = 2×2×2×11×11×11... View Article
How are nutrients replenished in the soil?
Answer: Fertile soil produces higher yields and greater plant quality. Fertile soil is rich in essential components and minerals, has... View Article
Two poles of equal height are standing opposite to each other on either side of the road which is 80 m wide. From a point P b/w then on-road, the angle of elevation of the top of a pole is 60°and the angle of depression from the top of another pole at point P is 30°. Find the heights of the poles and distances of the point P from the poles.
Let AB and CD be the two poles of equal height standing on the two sides of the road of... View Article
Give two examples of periodic motion
The motion of an object which repeats at regular intervals of time is known as periodic motion . Examples are:... View Article
In the electrolysis of water, a) name the gas collected at the anode and cathode b) why is the volume of gas collected at one electrode double than the other? c) what would happen if dilute H2SO4 is not added to water?
(a) In the electrolysis of water, the gas collected at cathode is hydrogen and the gas collected at anode is... View Article
Describe the geographical conditions required for the growth of Rice.
Oryza sativa is the scientific name of rice. This is termed the paddy. The major nutrient of rice is carbohydrates.... View Article
State Mendeleev’s periodic law. Write two achievements of Mendeleev’s periodic table.
Mendeleev’s Periodic Law: ‘Properties of elements are the periodic function of their atomic masses.’ Achievements: (i) It could classify all... View Article
