Is Matter Aroun...

Elements and compounds are both made up of the same kind of constituent particles, and represent pure substances. Which among the given pure substances is an element?

Glucose is a compound of carbon, hydrogen and oxygen. Identify the incorrect statement regarding it.

Which of the following options shows a correct match between the given substance and its property?

If a solution is prepared by dissolving 20 g of sugar in water and the volume of the water taken is 200 ml, then the concentration in terms of mass by mass percentage of the solution is ___________.

Emulsions are a colloidal mixture of two immiscible liquids. For example, milk is an emulsion of fat in water. The components of this emulsion can be separated by

The particles of which of the following mixtures can be separated by ultrafiltration but not by filtration through the ordinary filter paper?

The property of the particles of a true solution that makes it a homogeneous mixture is

In a 30% solution of table salt, the masses of salt and water in a 100 g sample of the solution respectively are

A mixture of iron and sulphur was taken in two test tubes 'X' and 'Y' and the latter was subjected to heat. Then a few drops of hydrochloric acid were added to both the test tubes and effervescence was observed in both the cases. The gases that evolved in the test tubes 'X' and 'Y' respectively were:

Which among the given molecules is homonuclear?

Tincture of iodine is a solution used as an antiseptic to clean wounds. This is prepared by dissolving solid iodine in

Solder is an alloy of

Which of the following is not a suspension?

Which process is used to separate a mixture of two miscible liquids A and B having boiling points 56°C and 65°C?

At 80°C and 1 atmosphere pressure, the maximum amount of ammonium chloride which can be dissolved in 100 g of water is 66 g. What is the solubility of ammonium chloride in water at 80°C in 50 g of water?

Why is the separation of rock and diamond done by mechanical picking?

The method suitable for the separation of two components of different densities is:

Which method is used to separate few micrograms of a substance in a mixture?

There are four liquids P, Q, R and S. Density of P is the most followed by the density of Q, R and S. Which of the following liquids would be collected at the bottom of the separating funnel?

The method of crystallisation is based on the