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Ammonia (NH3) is a chemical compound while Oxygen and Mercury are elements and Air is a heterogeneous mixture. Hence option C is correct. A chemical element is a species of atoms that have a given number of protons in their nuclei, including the pure substance consisting only of that species. For example, Sodium, Lithium, Oxygen, Hydrogen etc. are elements. A chemical compound is any substance composed of identical molecules consisting of atoms of two or more chemical elements which are chemically linked by chemical bonds. For example, Water (H2O) is a chemical combination of Hydrogen and Oxygen elements in a fixed ratio and is thus called a chemical compound. A mixture is a combination made up of two or more chemical components that are not chemically linked but are physically present together. It can be of two kinds (viz.) Homogeneous mixture - A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. All solutions would be considered homogeneous. For example a sugar solution has uniform distribution of sugar particles throughout the mixture making it a homogeneous mixture. Heterogeneous mixture - A heterogeneous mixture is a mixture with a non-uniform composition. For example, Air which may have different gases present in a non uniform manner.
Choose a figure which would most closely resemble the unfolded form of Figure (Z).
A paper is folded and cut as shown below. How will it appear when unfolded?
Among the four answer figures, which can be formed from the cutpieces given below?
In the following question, among the four answer figures which one can be formed from the cut out pieces given below?
Find ou t the alternative figure which contains figure (X) as its part.
Find out from the alternatives as how the pattern would appear when the transparent sheet is folded at the dotted line.
In the following question, among the four answer figures which one can be formed from the cut out pieces given below?
A piece of paper is folded and cut as shown below in the question figures. From the given answer figures, indicate how it will appear when opened?
...In the following question, among the four answer figures which one can be formed from the cut out pieces given below?
In the following question, among the four answer figures which one can be formed from the cut out pieces given below?
