The method suitable for separating suspended particles in liquid is:
What changes sodium hydroxide pellets to liquid?
The purity of common salt (NaCl) can be determined by _____
Butter is an example of emulsion in which
The element X that can combine with oxygen to form an oxide of the form XO2 is _____
Which of the following will have the least melting point?
What is the anode in the extraction of aluminum and what reaction takes place at the anode?
A gas X diffuses twice as fast as gas Y. If the relative molecular mass of X is 32, calculate the molecular mass of Y
Which of the following can be used in making perfumes?
The structure of diamond is:
The degree of randomness increases from
Which of the following statement is/are true? (I) H2SO4 is a strong electrolyte (II) CH3COOH is a weak electrolyte (III) Aluminium conducts electricity (IV) C6H12O6 is a non−electrolyte
The substance extensively used in manufacturing photographic chemicals is:
In a given homologous series, successive members differ in their relative molecular mass by:
If the difference in electronegativity of elements P and Q is 3.0, the bond that will be formed between them is
The equilibrium constant Kc is affected by:
The compound produced when sodium peroxide is heated with excess sodium is
The constituent common to duralumin and alnico is
The alkali metals are never found uncombined with other elements in the earth's crust because they
Which of the following has the highest hydroxyl ion concentration?
