Pure And Impure...

In a mixture of phenol (80%) and water (20%), water is a

Which one of the following is not a compound?

Rust is

Which of the following is not a metalloid?

Which of the following is a heterogeneous mixture?

Which of the following is an element?

The chemical symbol 'W' stands for

Dry ice is

The formula for lime water is

In which of the following cases is cooking very slow?

How can mixture of NH₃ and H₂ be separated?

Which of the following can be separated by solvent extraction?

Nitrogen and oxygen form three oxides:
In oxide I, 1.00 gm nitrogen combines with 0.57 gm oxygen.
In oxide II, 2.00 gm nitrogen combines with 2.24 gm oxygen.
In oxide III, 3.00 gm nitrogen combines with 5.11 gm oxygen.
These results are in accordance with the law of

A compound of nitrogen and oxygen on analysis showed that it contained 28 g of nitrogen to every 32 g of oxygen. Which one of the following formulae correctly represents the compound?

If an organic compound has C₁₀H₂₀ as its molecular formula, its empirical formula is

Gypsum is

Red lead is

The phosphate of a metal has the formula: MHPO₄. The formula of its chloride will be

Which of the following is the formula of a compound in which a monovalent positive radical combines with chromate radical?

What is the formula of calcium dihydrogen phosphate?