There are two classes A and B consisting of 40 and 52 student respectively . If the average of weight of class A is 45kg and that of class B is 40kg.Find the average of weight of all the student of class A and B.

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#Question id: 19543

#XL - P Chemistry

Which sulfate has the highest solubility in water?

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#Question id: 19544

#XL - P Chemistry

Which of the following metal ions plays an important role in muscle contraction?

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#Question id: 19545

#XL - P Chemistry

The correct order sequence of of the increasing covalent character is:

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#Question id: 19546

#XL - P Chemistry

Which of the following alkaline earth metal ions has the highest ionic mobility in aqua solution?

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#Question id: 19547

#XL - P Chemistry

Which one of the alkali metals form only the normal oxide M2O on heating in air?

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#Question id: 19548

#XL - P Chemistry

As the alkaline earth metal (except Be) tend to lose their valence electron readily they act as: