What is the product when sulphur reacts with oxygen?

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Important Questions on Metals and Non - Metals

MEDIUM

10th CBSE

IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 39

When an aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that:

HARD

10th CBSE

IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 40

A student puts one big iron nail in four test tubes containing solutions of zinc sulphate, aluminium sulphate, copper sulphate and iron sulphate. A reddish brown coating was observed only on the surface of iron nail which was put in the solution of:

HARD

10th CBSE

IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 41

Four test tubes were taken and marked A, B, C and D respectively. 2 ml of solution of ${Al}_{2} ({SO}_{4})_{3}$ in water was filled in each of the four test tubes. Clean piece of metal Zn was placed in test tube A, clean copper wire was placed in test tube C and a clean aluminium wire was placed in test tube D. It was observed that no change occurred in any of the test tubes. The correct inference drawn is:

MEDIUM

10th CBSE

IMPORTANT

SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 42

The common method for the extraction of metals from the oxide ores is: