Out of the given four mixtures, the one that appears clear and transparent is:
Important Questions on Multiple Choice Questions
Observe the figures given below, the proper sequence of the content in the glass beaker is:
The white of an egg, common salt, sugar and fine sand are added to water separately in beakers as shown below. The mixture is stirred well. A suspension will be formed in beaker:
Small strips of red coloured paper are pasted on the inner side of the test tubes. The contents of the test tubes are given alongside. Observe the coloured paper through the other side of the test tube through the liquid.
Rama heated a mixture of iron filings and sulphur in a hard glass test tube for some time till a grey-black product was formed. She cooled the test tube and then added 2 mL carbon disulphide in it and shook the contents of the test tube.
The observation made by her was likely to be as shown above.
Four students A, B, C and D observed the colour and solubility of iron, sulphur and iron sulphide in carbon disulphide. The tick mark (✓) represents 'soluble', and the cross mark (X) represents 'insoluble, in carbon disulphide. Their observations are tabulated below.
The correct observation has been reported by the student:
