The differences between Minerals and Ores are as follows:MineralsOres1. The naturally occurring metals that are present in the earth’s crust are known as Minerals.1. Ores is the rock from which is usually used to extract metals in a convenient and economical way. Ore has a composition that is definite.2. ... Read More

Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life. It is formed from the breakdown of rocks into tiny pieces called sediments. These rocks are broken down through the process of weathering due to exposure to extreme temperature changes, windblown particles, precipitation and ... Read More

To do: Factorize the expression $5xy^2+7x^2y$Solution: $5xy^2 + 7x^2y$ In both terms, $xy$ is common, so taking $xy$ as common and grouping as follows $5xy^2 + 7x^2y = xy (5y + 7x)$. So the factors of the given expression are $xy$ and $(5y + 7x)$

FibreFibres are strands of materials that are spun together to make yarn. Fibres naturally occur in both plants and animals. More than half of the fibres produced are natural fibres. Natural fibres include hair, cotton, silk, fur, and wool. On the other hand, Synthetic fibres are made entirely from chemicals, ... Read More

Solution:In a triangle Area = $\frac{1}{2} \times base  \times height$ In the given figure of triangle PMQ, the height or altitude of triangle is MN and the base of the triangle is PQ.So its area = $\frac{1}{2} \times PQ \times MN$

When you bring the balloon close to a piece of paper, there is no change observed.But when the balloon is rubbed, it gets negatively charged and hence attracts the neutral paper.

In Arthropoda, coelom is filled with blood.\r\rThe true coelom means a body cavity that arises as a cavity in embryonic mesoderm. \r\rIn arthropods, annelids and Mollusca, true coelom develops by splitting up of mesoderm, while in the cavity of Arthropoda and non-cephalopoda molluscs a colourless blood is present and is ... Read More

The colour change of a pH indicator is caused by the dissociation of the H+ ion from the indicator itself.pH indicators are in itself natural dyes.The neutral substance does not change the pH because neutral substances are neither acidic nor basic and thus does not change the colour of the ... Read More

1. When an acid reacts with metal, it produces a salt and hydrogen                             Acid + Metal → Salt + HydrogenFor example,  Nitric Acid + Calcium → Calcium Nitrate + Hydrogen The salt that is produced depends upon ... Read More

When a metal reacts with water, a metal hydroxide and hydrogen are formed. For example, Sodium reacts vigorously with water. Calcium reacts readily with water.                                  M(s) + 2H2O(l) ⟶ M(OH)2(aq) + H2(g)                                   Here, M stands for metal