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Some Basic Concepts Of Chemistry

Question

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When two substances X and Y are mixed together, a new substance Z is formed with the evolution of heat. Properties of Z are different from those of X and Y. Is Z an element, compound or a mixture?

Solution

Z is a compound.

Some More Questions From Some Basic Concepts of Chemistry Chapter

The popular unit of pressure is atmosphere, how is it related to pascal?

What are SI units of the following:

(i) Density
(ii) Molarity
(iii) Energy
(iv) Temperature ?

Out of 5.00 g and 5.0 g which one is more accurate and why?

What is iodised table salt?

Under what conditions air is considered as a heterogenous mixture?

What is gun powder?

Name two elements which are liquids.

Name two elements which are gases.

Name the scientist who proposed the law of multiple proportions.

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