Which of the following statement is/are ...

Which of the following statement is/are true ?

Calamine and siderite are carbonates

Argentie and cuprite are oxides

Zinc blende and pyrites are sulphides

Malachite and azurite are ores of copper

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Which of the following statements is/are true :

The ratio of the mean speed of the rms speed is independent of temperature of gas

The square of the mean speed of the molecules is equal to the mean squared speed at a certain temperature

Mean translational kinetic energy of the gas molecules at any given temperature is independent of the molecular mass of gas

The difference between rms speed and mean speed at any temperature for different gases diminishes as larger and yet larger molar masses are considered.

Which of the following statements is/are true ?

In process of the precipitation of silver from sodium dicyano argentate (I), the zinc acts as a reducing agent as well as complexing agent

In the process of roasting , the copper pyrites is converted into a mixture of `Cu_2S` and FeS which, in turn, are partially oxidised.

Limonite, haematite and magnesite are ores of iron

Tin and lead both are extracted from their ores by carbon reduction.

Which of the following statements is/are true?

In ferrocyanide ion, the effective atomic number is 36

Chelating ligands are atleast bidentate ligands

`[CrCl_(2)(CN)_(2)(NH_(3))_(2)]^(2+)" and "[CrCl_(3)(NH_(3))_(3)]` both have `d^(2)sp^(3)` hybridisation

As the number of rings in complex increases, stability of complex (chelate) also increases